Safety valves Index. Pressure reducing valves and safety valves FC-001 page 530

Transcription

1 Index General information page Introduction 531 General information 532 Design features and accessories 535 Installation and operating instructions 540 Product information Weight-loaded page DIN flanges Safety relief valve; mid-sized capacity; PN Full lift; high capacity; PN page Threaded 545 Safety relief valve; low capacity; max. 200 bar 546 Safety relief valve; mid-sized capacity; max. 180 bar 547 Full lift; high capacity; max. 250 bar 549 Safety relief valve; low capacity; max. 10 bar 551 DIN flanges 552 Proportional-relief valve; low capacity; straight model PN Full lift safety valve; high capacity; PN ( ) 555 Full lift safety valve; high capacity; PN Full lift safety valve; high capacity; PN ASME flanges Full lift safety valve; high capacity; ASME 150#-300# 561 Full lift safety valve; high capacity; API 526; ASME 150#-2500# 563 Bio/Clean service page High capacity; PN Index and product compare Pressure reducing valves and safety valves FC-001 page 530

2 Stem cap options Lifting lift stopper Lift gag Lift indicator Vibration damper Pneumatic actuation Stem cap Gas tight stem cap without disc lever Gas tight stem cap with disc lever Non-gastight stem cap with disc lever Pneumatic supplementary loading system Loading Spring steel Heat-resistant spring steel (>200 C) Stainless spring steel Cast iron weights Spring cap Closed bonnet Open bonnet Sealing Standard metal disc Stellited disc / seat Disc with O-ring seal Disc with detachable lifting aid Connections Threaded connection BSP and NPT Flanges rated DIN PN Flanges drilled as per ASME # Welding ends Tri-Clamp (Bio/Clean Service) Body Cast iron, Ductile cast iron Steel (forged/alloyed/cast steel) Chrome steel, Stainless steel Brass, Bronze Options SS bellows EPDM bellows High temperature variant Options Heating jacket Drain plug Options Semi nozzle Full nozzle PTFE nozzle, bellows and lining Additional components Bursting disc combination Change over valve Threaded, spring-loaded Flanged, spring-loaded Flanged, weight loaded Flanged, double, spring-loaded Safety relief Full lift Proportional Safety relief Full lift Full lift Safety relief Opening characteristic Pressure reducing valves and safety valves FC-002 page 531

3 General information Safety valves are among the facilities that must prevent higher pressures from occurring in installations than they were designed for. Pressure protection is of such importance that it is covered by legislation. Apart from legislative (at European level) regulations for pressure devices in general, users are also confronted with (national) regulations covering commissioning. These include the following: Country Legislation Inspection by Commissioning approval by Specification / Standard Netherlands PED 97/23/EG Notified Body Stoomwezen/Lloyd's Register Rules for pressure equipment A 1301, T 0103 Germany PED 97/23/EG Notified Body VdTUV AD 2000-A2, TRD 421 / 721 United States of America ASME I & VIII Based on the opening characteristics, safety valves can be divided as follows: Proportional-relief valves These valves open proportionally to the pressure increase. They are generally used in situations where limited blow-off capacities are required and the loss of medium should be as low as possible (e.g. thermal expansion). Contrary to other variants, proportional safety valves open very frequently. The overflow valve falls into the proportional safety valves segment. Safety relief valves These valves are ideally suited for mid-sized quantities. The large proportional range ensures a smooth operation and prevention of pressure peaks, mainly applicable for liquids. They are applied in situations where the capacity of a proportional valve is no longer sufficient and for situations in which even the smallest high-lifting valve is still too large. Full-lifting safety valves These valves open immediately, within a pressure increase of 5%, to the structural limitation of lifting height. They are mainly used for safeguarding gases and vapour, and specifically in those areas where the maximum quantity of medium should be discharged as rapidly as possible. Full lift Safety relief Proportional lifting [%] Lifting height [%] [%] Lifting height [%] [%] Lifting height [%] [%] [%] [%] Blow down Over pressure Blow down Over pressure Blow down Over pressure Diagrams: Combined function of opening and closing. Full-lifting Safety relief Proportional-lifting Opening Max. pressure increase Set pressure above 1 bar g 5% up to the restricted lift 10 % up to the required lift Set pressure below 1 bar g 0.1 bar g 0.1 bar g Capacity coefficient minimum 0.5 => minimum 0.08 for vapour and gases - => minimum 0.05 for liquids Closing Max. blow down Compressible media (vapour and gases) Non-compressible media (liquids) 10% (p < 3 bar g: 0.3 bar g) 20% (p < 3 bar g: 0.6 bar g) Remark: the table and diagrams above are based on the standard AD 2000-A2 (version 11/93), TRD (version 9/90) and DIN 3320 (version 9/84). Pressure reducing valves and safety valves FC-003 page 532

4 General information Terms related to safety valves Set pressure The pressure measured at the valve inlet at which a safety relief valve should commence to lift under service conditions. A tolerance of 3% (ISO4126) applies to the set pressure. Relieving pressure The relieving pressure is that at which the safety valve reaches its maximum capacity. This point depends on the opening characteristics of the safety valve and the medium. For gases and steam this is 5% above the set pressure for a high-lifting safety valve and for liquids this is 10% above the set pressure for a relief and proportional-lifting safety valve. Re-seat pressure The pressure measured at the valve inlet at which the safety relief valve re-seats. Back pressure The back pressure is the pressure occurring on the discharge side of the safety valve. Back pressure could occur during the blow-off of a safety valve (built-up back pressure) and could be the result of a prevailing pressure at the discharge side of the safety valve (superimposed back pressure). Back pressure can be constant or variable. Remark: when the back pressure exceeds 15% of the set pressure, this has a negative influence on the operation of the safety valve. A good solution for this is the installation of a stainless steel bellows. Consult our product specialists if this is the case. Operating pressure (Normal operating pressure) The operating pressure is the maximum system pressure during normal operation. 110 Vapours and gases Full lift safety valve % % 110 Liquids Safety relief and proportional safety valve Relieving pressure 105 Relieving pressure Set pressure 100 Set pressure 90 Reseating pressure 90 Usual margin 85 Operating pressure Reseating pressure Usual margin Operating pressure Remark: IN the case of gases and vapour, if the set pressure is <3 bar g, then at minimum it should be 0.3 bar g greater than the operating pressure. For liquids a minimum margin of 0.6 bar g applies. Test procedures The safety valves are tested on functional tightness. Econosto applies the standard API 527 for this purpose. Pressure reducing valves and safety valves FC-004 page 533

5 General information Important data for type/bore determination Medium Phase (gas, vapour or liquid) Temperature ( C) Density (kg/m3) Viscosity (cst) Capacity (kg/hour or m3/hour) Set pressure (bar) Back pressure, if applicable (bar) In general, for gases and vapour including steam, full lift safety valves are used. For liquids (non-compressible), best results are achieved with safety relief or proportional lifting valves. Explanation TUV type approval Almost all Econ-Leser safety valves have a TUV type approval; refer to the pertinent datasheets. The letters D/G/F within the type approval numbers refer to vapour (D), gas (G) and liquid (F) respectively. Pressure reducing valves and safety valves FC-005 page 534

6 Design features and accessories Gas tight stem cap (H2) Closed bonnet Open stem cap (H3) Open bonnet Gas tight stem cap (H4) Closed bonnet Bonnet In combination with the gas tight stem cap (optionally with lifting lever), the closed bonnet prevents the medium coming into contact with the outside air. The open bonnet protects against high temperatures and prevents formation and accumulation of condensate, e.g. when safeguarding steam boilers. Stem cap/lifting levers Gas tight stem cap (H2), without lifting lever. For safety valves where operational considerations mean, the disc may not be lifted. Open stem cap (H3) with lifting lever, (not gas tight). Gas tight stem cap (H4), with lifting lever. EPDM Bellows SS bellows Bellows The rubber bellows is designed to protect the moving parts at the discharge side against dirt or corrosion. (Remark: this bellows is not suited for back pressure compensation!) Material EPDM Set pressure max. 10 bar Temperature range -50 C to 130 C Back pressure max. 3 bar The SS bellows has two functions; 1. Compensation of the accumulated and present back pressure at the discharge side of the valve, so that the maximum lift can be guaranteed. 2. Protection of moving parts and spring from temperature, medium and dirt. Material of bellows SS (1) Material of other parts SS (1) Temperature range 450 C (550 C) Set pressure min. 3 bar (2) Back pressure max. 35% of the set pressure (2) (1) Other materials on request (2) Other pressures on request Pressure reducing valves and safety valves FC-006 page 535

7 Design features and accessories Soft seal For tighter sealing, a disc with an O-ring seal can be selected. In similar cases, account should be taken of non-standard temperature and resistance to the medium. Code Name Code letter Tmin. Tmax. CR Neoprene K -40 C 100 C NBR Nitrile N -25 C 110 C EPDM Ethylene/Propylene D -45 C 150 C FPM (FKM) Viton L -20 C 180 C FFKM Kalrez C 0 C 250 C Bursting disc holder Intermediate space monitoring Bursting disc Bursting disc combination The combination safety valve / bursting disc is used when environmentally harmful, toxic, expensive or adhesive substances need to be safeguarded. The combination ensures the highest level of tightness. Safety valve and bursting disc have also been tested in combination. A pressure gauge may optionally be supplied as a checking instrument Standard material bursting disc SS / / (1) Standard temperature range -30 C to +320 C (1) Other materials (also including other temperature ranges) available on request PTFE nozzle and bellows, Outlet finished with protective coating PTFE nozzle and bellows, Fully PTFE-lined Pressure reducing valves and safety valves FC-007 page 536

8 Design features and accessories PTFE lining and nozzle In chemical installations, one can be confronted with critical media or operational conditions which require special attention regarding construction and safety, e.g.: Highly corrosive media Extremely toxic media High back pressure A number of variants have been developed for the applications named above: A safety valve with a PTFE nozzle in the inlet and a protective coating in the discharge section, with the expectation that the valve will seldom be used. The PTFE nozzle prevents product contamination and product adhesion. If a stainless steel bellows is installed, correct functioning at up to 50% back pressure is guaranteed. A safety valve of which the inlet and discharge side are fully lined with PTFE. The PTFE bellows is gas tight and back pressure compensating. Due to the smooth PTFE-surfaces (max. Rz 16 µm) product adhesion is prevented. High temperature variant For liquids with a temperature exceeding 400 C, a high temperature variant is required to protect the mechanism and spring against prohibitive temperature influence. The maximum inlet temperature is 550 C. Lift stopper Lift indicator Test gag Lift stopper By means of a set screw, the safety valve is adjusted to the quantity of medium to be blown off. Lift indicator A lift indicator is used to sense the operational condition. In the event of a safety valve, the opening can be detected remotely. Test gag A test gag makes it possible to block the safety valve when the installation is tested above the set pressure of the safety valve. Drain plug The drain plug ensures dewatering of the body, mainly for condensation on safeguards for steam installations. Pressure reducing valves and safety valves FC-008 page 537

9 Design features and accessories Vibration damper Gas tight stem cap without lifting lever Vibration damper Gas tight stem cap with lifting lever Friction damper The friction damper limits vibrations in safety valves, even when extremely unfavourable conditions apply. This ensures stable blow-off. Actuator Loading air Lifting air T 1 Air supply Pressure tapping lines Control lines p T T (time) + - p P P 1 2 T Set pressure Pressure difference in the system to be protected Reaction time Pressur time characteristic without pneumatic control Pressure-time characteristic with pneumatic control Start opening the safety valve Safety valve fully open Safety valve fully reseated Pneumatic control Most safety valves can be provided with a "supplementary loading". This system comprises four components; Safety valve Actuator Control (pneumatic, electric/pneumatic) Air distribution station The extra loading enables the system pressure to increase up to just below the set pressure. The functional tightness of the safety valve that is provided with one of these supplementary loadings is guaranteed by this (Anti-Simmer-Device). When the set pressure is reached, the extra loading will support the opening and closing phase, hence the system will more quickly return to the original situation. This system brings the following benefits: Seat remains medium-tight until opening Shorter opening times Shorter closing times Precise lift ratio Independent functioning under back pressure Advantages as detailed above result in less product loss, and thereby to cost savings. Pressure reducing valves and safety valves FC-009 page 538

10 Safety valves Design features and accessories Cast variant Welded variant Change-over valve Change-over valves are installed for the event that shut-down of the installation is not feasible or desired, either due to production or economic reasons,. With change-over valves it is possible to switch between parallel safety valves, without interrupting the process, so that maintenance can be carried out. The design guarantees: Minimal pressure loss (3%-criteria) Availability of full bore during switch-over Stable blow-off of the safety valves Safety device with flanged connection for the process and flanged connection for the heating jacket Safety device with flanged connection for the process and threaded connection for the heating jacket Safety device with threaded connection for the process and threaded connection for the heating jacket Heating jacket By means of a heating jacket it is possible to heat the safety valve during the protection of congealing liquids. The heating jacket is heated by low pressure steam or thermal oil. Pressure reducing valves and safety valves FC-010 page 539

11 Installation and operating instructions Safety valves are high quality fittings which should be handled with great care. Penetration of dust should specifically be avoided. Heavy shocks also need to be avoided as these could damage disc and seat. Prior to transport, the lever of a weight-loaded safety valve is locked by means of a wooden wedge. The (pipe) section before the safety valve should be cleaned before installation. The set-up of safety valves should be such that the valve is positioned horizontally. Tension in the pipes at the intake or discharge side should under no circumstances be transferred to the safety valve. Provisions to absorb reactive forces during blow-off are to be installed as well. Once installed, the safety valve should be absolutely stationary, irrespective of the applied forces. The sketch shows an example of a proper set-up. For high-lifting safety valves starting from 100, it is recommended to use supports Installation example for the discharge of water condensate In order to prevent a safety valve blowing-off prematurely, it is essential to ensure sufficient differential pressure between the set pressure and the operating pressure. Refer to the chart as under General information. No condensate or medium may remain in the discharge of the safety valve or anywhere of importance to the operation of the safety valve (at the spring, bellows, etc.), as this could influence the actuation. Draining should always be arranged through the discharge pipe, installed with a slope. Once a safety valve is operational, it can happen that leakage takes place following blow-off. The enormous speed of the discharged medium has then carried along dirt and or liquid particles, which could have damaged the valve or seat. Careful dismantling, grinding of disc and seat and re-installation is generally the only solution. For spring-loaded safety valves, the adjusting screw should be turned out slowly after the lifting cap has been carefully removed; use penetrating oil if required. Note: under no conditions must the spindle be rotated as long as (spring) tension is applied. The nuts holding the bonnet, can then be loosened without any danger. Spindle and disc can now be removed from the safety valve, after which the disc and seat can be inspected for damage, and polished if necessary. For re-assembly, follow the reverse procedure. Safety valves with an inspection seal, must be inspected and approved by the original approving institution, following re-commissioning. Comprehensive information This brief discussion has provided only a limited overview. Comprehensive information is available on request. Pressure reducing valves and safety valves FC-011 page 540

12 Weight-loaded DIN flanges Application Econ-Leser safety relief valves with lever and weight are mainly applied to small steam installations on land. The minimal overall height and the simple adjustment are advantages of this type of safety valve. Remark: Limited applicability for installations with back pressure. Standard variants Materials Cast iron and cast steel Connections Cast iron and cast steel Pressure rating Cast iron PN 16 and cast steel PN 40 Type of approval TUV-SV D/G and PED Material specification Component Material EN and/or (DIN) W.nr. Body fig. 534 Cast iron GJL-250 (GG-25) Body fig. 532 Cast steel GP240GH (GS-C25) Seat Stainless steel X2CrNiMo (G-X2CrNiMo18 10) Disc Stainless steel X39CrMo17-1 (X35CrMo17) Stem Stainless steel X20Cr Cover Ductile cast iron GJS (GGG-40) Lever Steel S235JRC (St.37) Temperature range (DIN EN) Figure / +300 C Figure / +450 C* * Above 400 C, provided with SS bolts and nuts for the cover. Safety relief valve mid-sized capacity PN fig. 532 fig Cast iron Cast steel Small overall height Other variants Double safety valve with weight-loading Ordering information Ordering code Material Inlet/outlet max. set pressure flange [bar] [mm] 534 Cast iron PN 16/16 See dimensions tabel Cast steel PN 40/40 See dimensions tabel Attention: Always indicate the set pressure and whether the safety valve is to include an Econ calibration report or calibration report. The loading weights are additional; this is determined based on the set pressure. L1 L Dimensions do Ao max. set pressure a b H L1 L Weight Fig. 534 Fig. 532 [mm] [mm2] [bar] [mm] [kg] H b Outlet a do Inlet Pressure reducing valves and safety valves FC page 541

13 Weight-loaded DIN flanges Discharge Capacities fig. 532 and fig. 534 Calculation of mass flow according to DIN 3320, AD-Merkblatt A2, TRD 421 p Set pressure bar/bar g I Sat. steam kg/h II Air 32 F and 1013 mbar m 3 n/h d o (mm) p I II I II I II I II I II I II d o (mm) p I II I II I II I II I II I II Pressure reducing valves and safety valves FC page 542

14 Weight-loaded DIN flanges Application Econ-Leser full lift safety valves with weight-loading are mainly applied to steam installations on land. The minimal overall height and the simple adjustment are also a feature of this type of safety valve. Remark: Limited applicability for installations with back pressure. Standard variants Materials Cast iron and cast steel Connections Pressure rating Cast iron PN 16 and cast steel PN 40 Type of approval TUV-SV D/G and PED Material specification Component Material EN and/or (DIN) W.nr. Body fig. 539 Cast iron GJL-250 (GG-25) Body fig. 563 Cast steel GP240GH (GS-C25) Seat Stainless steel X2CrNiMo (G-X2CrNiMo18 10) Disc Stainless steel X39CrMo17-1 (X35CrMo17) Stem Stainless steel X20Cr Cover Ductile cast iron GJS (GGG-40) Lever Steel S235JRC (St.37) Temperature range (DIN EN) Figure / +300 C Figure / +450 C* * Above 400 C, provided with SS bolts and nuts for the cover. Full lift high capacity PN fig. 539 fig Cast iron Cast steel Small overall height Other variants Double safety valve with weight-loading Ordering information Ordering code Material Inlet/outlet max. set pressure flange [bar] [mm] 539 Cast iron PN 16/16 See dimensions tabel Cast steel PN 40/16 See dimensions tabel Attention: Always indicate the set pressure and whether the safety valve is to include an Econ calibration report or another calibration report. The loading weights are additional; this is determined based on the set pressure. L L1 H Dimensions do Ao max. set pressure a b H L1 L Weight Inlet discharge Fig. 539 Fig. 563 [mm] [mm2] [bar] [mm] [kg] b Outlet a do Inlet Pressure reducing valves and safety valves FC page 543

15 Weight-loaded DIN flanges Discharge Capacities Calculation of mass flow according to DIN 3320, AD-Merkblatt A2, TRD 421 p I II Set pressure Sat. steam Air 32 F and 1013 mbar bar/bar g kg/h m 3 n/h d o (mm) p I II I II I II I II I II I II d o (mm) 92 p I II I II I II I II I II I II Pressure reducing valves and safety valves FC page 544

16 Threaded Safety relief valve Low capacity Max. 200 bar page 546 page 547 page 549 " - 2" BSP or NPT thread Stainless steel inlet Viton disc ring (fig. 1514) Safety relief valve Mid-sized capacity Max. 180 bar " - 1 " BSP or NPT thread Stainless steel Broad selection of disc seals Compact design Full lift High capacity Max. 250 bar " - 1" BSP or NPT thread Chrome steel Stainless steel Compact design Index and product compare page 551 Safety relief valve Low capacity Max. 10 bar " - 2" BSP female thread Brass Viton or nitrile disc seal Pressure reducing valves and safety valves FC page 545

17 Threaded Application Econ safety relief valves with threaded connection are mainly applied in the process industry as a relief valve for thermal expansion. Suitable for gases and liquids. This type of safety valve is also suitable as an overflow. Standard variants Materials wetted parts in closed situations in SS, other parts in steel Connections " - 2" BSP or NPT male/female thread (in/outlet) Pressure rating Max. 200 bar Variants Closed bonnet, soft seal, gas tight Closed bonnet, gas tight Type of approval PED Material specification Component Material EN and/or (DIN) W.nr. Inlet section/seat Stainless steel X17CrNi16-2 (X20CrNi17 2) Disc (fig. 1515, 1516) Stainless steel X20Cr Disc sealing ring (Fig. 1514) FPM (Viton) Stem Stainless steel X17CrNi16-2 (X20CrNi17 2) Spring Spring steel Outlet piece/bonnet Steel - (St.35) Remark: without cupriferous parts Temperature range Figure / +160 C Figure 1515/ / +200 C Safety relief valve low capacity max. 200 bar fig fig fig " - 2" BSP or NPT thread Stainless steel inlet Viton disc ring (fig. 1514) Ordering information Ordering code Material Disc max. set pressure Thread type seal [bar] ["] 1514 Steel Viton 1-42 BSP or NPT Steel SS 1-42 BSP or NPT Steel SS BSP or NPT - 1 Attention: always indicate the set pressure and whether the safety valve is to include an Econ calibration report or another calibration report. H Dimensions do L1 L2 L3 H Weight Fig. 1514/1515 Fig ["] [mm] [kg] do L 1 Fig L 3 L 2 Pressure reducing valves and safety valves FC page 546

18 Threaded Application Econ-Leser safety relief valves with threaded connection are ideally suited for low and medium-sized capacities. Their proportional range ensures a smooth operation, especially with liquids. Also suited for thermal expansion and overflow applications. Standard variants Materials Stainless steel Connections - 1 " BSP or NPT male/female thread (in/outlet) Pressure rating Max. 180 bar Variants Closed bonnet without lifting lever, gas tight (with or without O-ring disc seal) Closed bonnet with lifting lever (by means of turning knob), gas tight (with or without O-ring disc seal) Type of approval " and ": TUV-SV D/G/F, PED, ASME NB, V, GL, and LROS Material specification Component Material EN and/or (DIN) W.nr. Inlet section/seat Stainless steel X2CrNiMo (G-X2CrNiMo18 10) Disc Stainless steel X2CrNiMo (G-X2CrNiMo18 10) Stem Stainless steel X2CrNiMo (G-X2CrNiMo18 10) Spring Stainless steel X10CrNi18-8 (X12CrNi17 7) Outlet piece/bonnet Stainless steel X2CrNiMo (G-X2CrNiMo18 10) Temperature range (DIN EN) Figure 11521/11522 " and " -270 / +280 C 1" and 1 " -200 / +400 C Figure 11523/11524 " and " -45 / +250 C* Safety relief valve mid-sized capacity max. 180 bar fig fig fig fig " - 1 " BSP or NPT thread Stainless steel Broad selection of disc seals Compact design * The temperature range of the O-ring for fig /11524 is critical, see below. Options, O-ring material CR/Neoprene -40 / +100 C NBR/Nitrile -25 / +110 C EPDM/Ethylene-Propylene -45 / +150 C FPM (FKM)/Viton -20 / +180 C FFKM/Kalrez 0 / +250 C Other variants Chrome steel variant " connection for all figure numbers and 1" connection for fig and DIN and ASME rated flanges Heating jacket For the above options and further information, refer to the introductory pages of this section. Ordering information Ordering code Bonnet Stem cap Disc- O-ring max. set pressure Thread type lever material [bar] ["] Closed Gas-tight No - See dimensions tabel BSP or NPT Closed Gas-tight Yes - See dimensions tabel BSP or NPT Closed Gas-tight No See above See dimensions tabel BSP or NPT Closed Gas-tight Yes See above See dimensions tabel BSP or NPT - Attention: always indicate the set pressure and whether the safety valve is to include an Econ calibration report or another calibration report. H Dimensions do Ao max. set pressure a b c H Weight Inlet discharge Fig /11523 Fig /11524 set pressure <68 bar >68 bar <68 bar >68 bar ["] [mm] [mm2] [bar] [mm] [kg] Remark: data regarding 1" and 1 " applicable to fig /11522 only. b c Outlet Fig a do Inlet Pressure reducing valves and safety valves FC page 547

19 Threaded Discharge Capacities fig en fig Calculation of mass flow according to DIN 3320, AD2000-Merkblatt A2, TRD 421 p Set pressure bar g I Saturated steam kg/h II Air at 0 C and 1013 mbar mn 3/h III Water at 20 C 10 3 kg/h d o 6 10 (mm) p I II III I II III I II III I II III 0, ,63 0, , , , , , , , , ,64 5,68 6,56 7,33 8,03 9,27 10,4 11,4 12,3 13,1 14, , , Pressure reducing valves and safety valves FC page 548

20 Threaded Application Econ-Leser full lift safety valves with threaded connection are mainly applied to vapours (including steam) and gases. Suitable for liquids in large volumes. Standard variants Materials Chrome steel and stainless steel Connections " - 1" BSP or NPT male/female thread (in/outlet) Pressure rating Max. 250 bar Variants Closed bonnet without lifting lever, gas tight Closed bonnet with lifting lever, non gas tight Closed bonnet with lifting lever, gas tight Type of approval TUV-SV D/G/F, PED, ASME NB, V, GL, LROS and RINA Material specification Component Material EN and/or (DIN) W.nr. Fig. 1525/1526/1527 Inlet section/seat Stainless steel X14CrMoS17 (X12CrMoS17) Disc Stainless steel X39CrMo17-1 (X35CrMo17) Stem Stainless steel X20Cr Spring Spring steel Outlet piece/bonnet Ductile cast iron GJS LT (GGG-40.3) Fig. 1528/1529 Inlet section/seat Stainless steel X2CrNiMo (G-X2CrNiMo18 10) Disc, stem Stainless steel X2CrNiMo (G-X2CrNiMo18 10) Spring Stainless steel X10CrNi18-8 (X12CrNi17 7) Outlet piece/bonnet Stainless steel X2CrNiMo (G-X2CrNiMo18 10) Temperature range (DIN EN) Figure 1525/1526/ / +300 C* Figure 1528/ / +400 C * Above 200 C, provided with heat-resistant spring. Full lift high capacity max. 250 bar fig fig fig fig fig " - 1" BSP or NPT thread Chrome steel Stainless steel Compact design Other variants O-ring seal SS or EPDM bellows Massive construction for high pressures DIN and ASME rated flanges Heating jacket For the above options and further information, refer to the introductory pages of this section. Ordering information Ordering code Material Bonnet Stem cap Disc- max. set pressure Thread type lever [bar] ["] 1525 Chr. steel Closed Not gas-tight Yes See dimensions tabel BSP or NPT Chr. steel Closed Gas-tight Yes See dimensions tabel BSP or NPT Chr. steel Closed Gas-tight No See dimensions tabel BSP or NPT SS Closed Gas-tight No See dimensions tabel BSP or NPT SS Closed Gas-tight Yes See dimensions tabel BSP or NPT - 1 Attention: always indicate the set pressure and whether the safety valve is to include an Econ calibration report or another calibration report. H Dimensions do Ao max. set pressure a b c H Weight Inlet discharge Fig. 1525/ Fig. 1526/ 1527/ ["] [mm] [mm2] [bar] [mm] [kg] c b Outlet do a Inlet Fig. 1526/1529 Pressure reducing valves and safety valves FC page 549

21 Threaded Discharge Capacities fig till fig Calculation of mass flow according to DIN 3320, AD2000-Merkblatt A2, TRD 421 p Set pressure bar g I Saturated steam kg/h II Air at 0 C and 1013 mbar mn 3/h III Water at 20 C 10 3 kg/h d o ,5 (mm) p I II III I II III I II III I II III 0,2 0, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,48 Pressure reducing valves and safety valves FC page 550

22 Threaded Application Econ safety relief valves with threaded connection, can be used for many simple applications. Suitable for gases, vapours and liquids. Specific features and applications: Fig. 517/518 saturated steam and hot water, available including Stoomwezen/Lloyd's Register test certificate on request Fig. 527 including diaphragm, for water, air and other non-aggressive gases Standard variants Materials Brass Connections " - 2" BSP female thread Pressure rating Max. 10 bar Variants Closed bonnet, soft seal Closed bonnet with lifting lever, soft seal Type of approval PED Material specification Component Material EN and/or (DIN) W.nr. Fig. 517/518 Body, disc, bonnet Brass CuZn39Pb Disc sealing ring FPM (Viton) Spring Spring steel Fig. 527 Body, bonnet Brass CuZn40Pb Diaphragm NBR Spring Spring steel Safety relief valve low capacity max. 10 bar fig. 517 fig. 518 fig. 527 " - 2" BSP female thread Brass Viton or nitrile disc seal Temperature range Figure 517/ C Figure C (for oil +30 C) Ordering information Ordering code Disc Disc- Spring range seal lever fig. 517/518 fig. 527?" fig. 527?" and 1" [bar] ["] 517 Viton No 1-3 and Viton Yes 1-3 and Nitrile Yes Attention: always indicate the set pressure and whether the safety valve is to include an Econ calibration report. H Dimensions do L1 L2 H Weight Fig. 517/518 Fig. 527 Fig. 517/518 Fig. 527 Fig. 517/518 Fig. 527 Fig. 517 Fig. 518 Fig. 527 Fig. 517 Fig. 518 Fig. 527 ["] [mm] [kg] do Fig. 517 L 1 L 2 Pressure reducing valves and safety valves FC page 551

23 DIN flanges Index and product compare page 553 page 555 page 557 Proportional-relief valve Low capacity Straight model PN Cast iron Cast steel Full lift safety valve High capacity PN ( ) Cast iron Cast steel Stainless steel Full lift safety valve High capacity PN Cast steel page 559 Full lift safety valve High capacity PN Cast steel Alloyed cast steel Full Nozzle Pressure reducing valves and safety valves FC page 552

24 DIN flanges Application Econ-Leser proportional-relief valves open proportionally to the pressure increase. They are generally used in situations where very limited quantities are expected and the loss of medium should be as low as possible (e.g. thermal expansion). This type of safety valve is also suitable as an overflow. Standard variants Materials Cast iron and cast steel Connections Cast steel , Cast iron Pressure rating Cast iron PN 16, Cast steel PN 40 Variants Open bonnet without lifting lever, non gas tight Closed bonnet without lifting lever, gas tight Open bonnet with lifting lever, non gas tight Closed bonnet with lifting lever, gas tight Type of approval 20-50: TUV-SV D/G/F, : TUV-SV D/G PED, V, GL and RINA (fig. 547/598) Material specification Component Material EN and/or (DIN) W.nr. Body fig. 596/598 Cast iron GJL-250 (GG-25) Body fig. 545/547 Cast steel GP240GH (GS-C25) Seat Stainless steel X2CrNiMo (G-X2CrNiMo18 10) Disc Stainless steel X39CrMo17-1 (X35CrMo17) Stem Stainless steel X20Cr Spring Spring steel Bonnet Ductile cast iron GJS (GGG-40) Proportional-relief valve low capacity straight model PN fig. 545 fig. 547 fig. 596 fig Cast iron Cast steel Temperature range (DIN EN) Figure 596/ / +300 C* Figure 545/ / +400 C* * Above 200 C, provided with heat-resistant spring. Other variants SS or EPDM bellows O-ring seal (starting from 20) ASME rated flanges (see product group " ASME flanges" as well) For the above options and further information, refer to the introductory pages of this section. Ordering information Ordering code Material Bonnet Stem cap Disc- Inlet/outlet max. set pressure lever flange [bar] [mm] 545 Cast steel Open Not gas-tight No PN 40/40 See dimensions tabel Cast steel Open Not gas-tight Yes PN 40/40 See dimensions tabel Cast steel Closed Gas-tight No PN 40/40 See dimensions tabel Cast steel Closed Gas-tight Yes PN 40/40 See dimensions tabel Cast iron Open Not gas-tight No PN 16/16 See dimensions tabel Cast iron Open Not gas-tight Yes PN 16/16 See dimensions tabel Cast iron Closed Gas-tight No PN 16/16 See dimensions tabel Cast iron Closed Gas-tight Yes PN 16/16 See dimensions tabel Attention: always indicate the set pressure and whether the safety valve is to include an Econ calibration report or calibration report with Stoomwezen/Lloyd's Register approval. Dimensions d0 A0 max. set pressure H H (lever yes/no) Weight Inlet Fig. 596/598 Fig. 545/547 Fig. 545/596 Fig. 547/598 no yes no yes [mm] [mm2] [bar] [mm] [kg] H Inlet do L Fig. 547/598 Outlet Pressure reducing valves and safety valves FC page 553

25 DIN flanges Discharge Capacities fig. 545, fig. 547, fig. 596 en fig. 598 Calculations of mass flow according to DIN 3320, AD2000- Merkblatt A2, TRD 421 p Set pressure bar g I Saturated steam kg/h II Air at 0 C and 1013 mbar m n 3 /h III Water at 20 C 10 3 kg/h d o (mm) p I II III I II III I II III 2) I II III 2) I II III 2) I II III 2) , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,6 2) Type goedkeur voor vloeistoffen alleen met o-ring klep! Type test approved for liquids only with o-ring-disc d o (mm) p I II I II I II I II I II I II Pressure reducing valves and safety valves FC page 554

26 DIN flanges Econ-Leser full lift safety valves are mainly applied for vapours (including steam) and gases. Suitable for liquids in large volumes. Standard variants Materials Cast iron, cast steel and stainless steel Connections Cast steel , cast iron and stainless steel Pressure rating Cast iron PN 16, cast steel and stainless steel PN 40 ( 200 = PN 25) Variants Closed bonnet without lifting lever, gas tight Open bonnet with lifting lever, non gas tight Closed bonnet with lifting lever, gas tight Type of approval TUV-SV D/G/F, PED, ASME NB, BV, V, GL, LROS and RINA Material specification Component Material EN and/or (DIN) W.nr. Fig. 564/565/566/567 Body fig. 564/566 Cast iron GJL-250 (GG-25) Body fig. 565/567 Cast steel GP240GH + N (GS-C25N) N Seat Stainless steel X2CrNiMo (G-X2CrNiMo18 10) Disc Stainless steel X39CrMo17-1 (X35CrMo17) Stem Stainless steel X20Cr Spring Spring steel Bonnet Ductile cast iron GJS (GGG-40) Fig. 1550/1551 Body, bonnet Stainless steel GX5CrNiMo (G-X6CrNiMo18 10) Seat, disc, stem Stainless steel X2CrNiMo (G-X2CrNiMo18 10) Spring Stainless steel X10CrNi18-8 (X12CrNi17 7) Temperature range (DIN EN) Figure 564/ / +300 C* Figure 565/ / +450 C* Figure 1550/ / +400 C * Above 200 C provided with heat-resistant spring and above 400 C also provided with SS bolts and nuts for the bonnet. Full lift safety valve high capacity PN ( ) fig. 564 fig. 565 fig. 566 fig. 567 fig fig Cast iron Cast steel Stainless steel Other variants SS or EPDM bellows O-ring seal 20/32 and 20/40 Other materials Heating jacket Disc with detachable lifting aid ASME rated flanges (see product group " ASME flanges" as well) For the options as detailed above and further information, see introductory pages. Ordering information Ordering code Material Bonnet Stem cap Disc- Inlet/outlet max. set pressure lever flange [bar] [mm] 1550 SS Closed Gas-tight No PN 40/16 See dimensions tabel SS Closed Gas-tight Yes PN 40/16 See dimensions tabel Cast iron Open Not gas-tight Yes PN 16/16 See dimensions tabel Cast steel Open Not gas-tight Yes PN 40/16 See dimensions tabel Cast iron Closed Gas-tight Yes PN 16/16 See dimensions tabel Cast steel Closed Gas-tight Yes PN 40/16 See dimensions tabel Attention: always indicate the set pressure and whether the safety valve is to include an Econ calibration report or another calibration report. H Dimensions d0 A0 max. set pressure a b H Weight Inlet discharge [mm] [mm2] [bar] [mm] [kg] b Outlet do Inlet a Fig. 566/567/1551 Pressure reducing valves and safety valves FC page 555

27 DIN flanges Discharge Capacitiesfig. 565, fig. 565, fig. 566, fig. 567, fig and fig Calculations of mass flow according to DIN 3320, AD2000- Merkblatt A2, TRD 421 p Set pressure bar g I Saturated steam kg/h II Air at 0 C and 1013 mbar mn 3 /h III Water at 20 C 10 3 kg/h d o (mm) p I II III I II III I II III I II III I II III I II III 0, , , , , , ,4 0, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , d o (mm) p I II III I II III I II III I II III I II III 0, , , , , , Pressure reducing valves and safety valves FC page 556

28 DIN flanges Application Econ-Leser full lift safety valves are mainly applied for vapours (including steam) and gases. Suitable for liquids in large volumes. Standard variants Materials Cast steel Connections Pressure rating PN Variants Open bonnet with lifting lever, non gas tight Closed bonnet with lifting lever, gas tight Type of approval TUV-SV D/G/F, PED, V and ASME NB Material specification Component Material EN and/or (DIN) W.nr. Body Cast steel GP240GH (GS-C25) Seat Stainless steel X2CrNiMo (G-X2CrNiMo18 10) Disc Stainless steel X39CrMo17-1 (X35CrMo17) Stem Stainless steel X2CrNiMo (G-X2CrNiMo18 10) Spring (Heat-resistant) Spring steel Bonnet fig. 560 Ductile cast iron GJS (GGG-40) Bonnet fig. 561 Ductile cast iron GJS LT (GGG-40.3) Temperature range (DIN EN) -85 / +400 C Full lift safety valve high capacity PN fig. 560 fig Cast steel Other variants SS bellows O-ring seal Other materials Heating jacket Other DIN pressure rating flanged connections ASME rated flanges (see product group " ASME flanges" as well) For the above options and further information, refer to the introductory pages of this section. Ordering information Ordering code Material Bonnet Stem cap Disc- Inlet/outlet max. set pressure lever flange [bar] [mm] 560 Cast steel Open Not gas-tight Yes PN /40 See dimensions tabel Cast steel Closed Gas-tight Yes PN /40 See dimensions tabel Attention: always indicate the set pressure and whether the safety valve is to include an Econ calibration report or another calibration report. H Dimensions d0 A0 max. set pressure a b H Weight Inlet discharge Fig. 560 Fig. 561 [mm] [mm2] [bar] [mm] [kg] b Outlet do Inlet a Fig. 561 Pressure reducing valves and safety valves FC page 557

29 DIN flanges Discharge Capacitiesfig. 560 and fig. 561 Calculations of mass flow according to DIN 3320, AD2000- Merkblatt A2, TRD 421 p Set pressure bar g I Saturated steam kg/h II Air at 0 C and 1013 mbar mn 3 /h III Water at 20 C 10 3 kg/h d o (mm) p I II III I II III I II III I II III 2, , , , , , , , , , , , , , , , , , , , , , , Pressure reducing valves and safety valves FC page 558

30 DIN flanges Application Econ-Leser full lift safety valves are mainly applied for vapours (including steam) and gases. Suitable for liquids in large volumes. Standard variants Materials Cast steel and alloyed cast steel Connections Cast steel , Alloyed cast steel Pressure rating PN Variants Open bonnet with lifting lever, non gas tight Closed bonnet with lifting lever, gas tight Type of approval TUV-SV D/G/F, PED, V and ASME NB Material specification Component Material EN and/or (DIN) W.nr. Body (Cast steel) Cast steel GP240GH (GS-C25) Body (Alloyed cast steel) Alloyed steel G17CrMo5-5 (GS-17CrMo5-5) Seat (Stellited) Stainless steel X2CrNiMo (G-X2CrNiMo18 10) Disc (Stellited) Stainless steel X39CrMo17-1 (X35CrMo17) Stem Stainless steel X2CrNiMo (G-X2CrNiMo18 10) Spring (Heat-resistant) Spring steel Bonnet fig. 558 Ductile cast iron GJS (GGG-40) Bonnet fig. 559 Ductile cast iron GJS LT (GGG-40.3) Temperature range (DIN EN) Cast steel -85 / +450 C Alloyed cast steel -85 / +550 C Full lift safety valve high capacity PN fig. 558 fig Cast steel Alloyed cast steel Full Nozzle Other variants SS bellows O-ring seal Other materials Heating jacket Inlet with butt weld connection Other DIN pressure rating flanged connections ASME rated flanges (see product group " ASME flanges" as well) For the above options and further information, refer to the introductory pages of this section. Ordering information Ordering Material Bonnet Stem cap Disc- Inlet/outlet max. set pressure code lever flange [bar] [mm] 558 Cast steel Open Not gas-tight Yes PN /40-63 See dimensions tabel Alloyed cast steel Open Not gas-tight Yes PN /40-63 See dimensions tabel Cast steel Closed Gas-tight Yes PN /40-63 See dimensions tabel Alloyed cast steel Closed Gas-tight Yes PN /40-63 See dimensions tabel Attention: always indicate the set pressure and whether the safety valve is to include an Econ calibration report or another calibration report. H Dimensions d0 A0 max. set pressure a b H Weight Inlet discharge Discharge Fig. 558 Fig. 559 PN 40 PN 63 [mm] [mm2] [bar] [mm] [kg] b Outlet do Inlet a Fig. 559 Pressure reducing valves and safety valves FC page 559

31 DIN flanges Discharge Capacities fig. 558 and fig 559 Calculations of mass flow according to DIN 3320, AD2000- Merkblatt A2, TRD 421 p Set pressure bar g I Saturated steam kg/h II Air at 0 C and 1013 mbar mn 3 /h III Water at 20 C 10 3 kg/h d o (mm) p I II III I II III I II III I II III I II III I II III 2, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , d o (mm) p I II III I II III I II III I II III I II III I II III 2, , Pressure reducing valves and safety valves FC page 560

32 ASME flanges Application Econ-Leser full lift safety valves are mainly applied for vapours (including steam) and gases. Suitable for liquids in large volumes. Standard variants Materials Cast steel Connections 1" - 4" Pressure rating ASME 150# - 300# Variants Open bonnet with lifting lever, non gas tight Closed bonnet without lifting lever, gas tight Closed bonnet with lifting lever, gas tight Type of approval TUV-SV D/G/F, PED, ASME NB, BV, V, GL, LROS and RINA Material specification Component Material US Body Cast steel ASTM A216-WCB Seat Stainless steel AISI 316L Disc Stainless steel MT 440 Stem Stainless steel AISI 420 Spring Spring steel Bonnet Ductile cast iron ASTM A395 Temperature range (ASME) -29 / +427 C* * Above 200 C provided with heat-resistant spring and above 400 C also provided with SS bolts and nuts for the bonnet. Full lift safety valve high capacity ASME 150#-300# fig. 552 fig. 553 fig "- 4" Cast steel Face-to-face dimension as per API 526 ASME VIII Other variants SS or EPDM bellows O-ring seal Variant with Full Nozzle Disc with detachable lifting aid Heating jacket Stellited disc/seat Other materials For the above options and further information, refer to the introductory pages of this section. Remark Many safety valves from the product groups " DIN flanges" and " thread" are available including ASME flanges as well. Ordering information Ordering code Material Inlet/outlet Bonnet Stem cap Disc lever flange ["] 552 Cast steel #/150# Open Not gas-tight Yes Cast steel #/150# Closed Gas-tight No Cast steel #/150# Closed Gas-tight Yes 1-4 Attention: always indicate the set pressure and whether the safety valve is to include an Econ calibration report or another calibration report. H Outlet do Dimensions Orifice d0 A0 max. set pressure a b H Weight Inlet discharge letter Fig. 552 Fig. 553 Fig. 554 ["] [mm] [mm2] [bar] [mm] [kg] 1 2 F G H K L Perbunan b Inlet a Fig. 554 Pressure reducing valves and safety valves FC page 561

33 ASME flanges Discharge Capacitiesfig. 552, fig. 553 and fig. 554 Calculations of mass flow according to DIN 3320, AD2000- Merkblatt A2, TRD 421 p Set pressure bar g I Saturated steam kg/h II Air at 0 C and 1013 mbar mn 3 /h III Water at 20 C 10 3 kg/h 1 x / 2 x / 2 x 2 1 / 2 2 x 3 3 x 4 4 x 6 d o (mm) p I II III I II III I II III I II III I II III I II III 0, , , , , , ,3 0, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , p I II Discharge Capacitiesfig. 552, fig. 553 and fig. 554 Calculation of mass flow according to ASME Boiler and Pressure Vessel Code, Sec. VIII, Div. 1 at 10 % overpressure and with certified coefficient of discharge K. Capacities below 30 psig are calculated including 3 psi overpressure. Set pressure psig Saturated Steam, valve discharging to atmospheric pressure (14,7 psi) lb/h Air at 60 F, valve discharging to atmospheric pressure (14,7 psi) SCFM U.S. gallons per minute III Water at 70 F 1 x / 2 x / 2 x 2 1 / 2 2 x 3 3 x 4 4 x 6 d o (mm) p I II III I II III I II III I II III I II III I II III , , , , , Pressure reducing valves and safety valves FC page 562

34 ASME flanges Application Econ-Leser full lift safety valves as per API 526 are mainly applied for vapours (incl. steam) and gases, in the petrochemical industry. Suitable for liquids in large volumes. Standard variants Materials Cast steel, high temperature steel and stainless steel Connections 1" - 8" Pressure rating ASME 150# # Variants Closed bonnet without lifting lever, gas tight Closed bonnet with lifting lever, non gas tight Closed bonnet with lifting lever, gas tight Open bonnet with lifting lever, non gas tight Type of approval TUV-SV D/G/F, PED and ASME VIII Material specification Component Material US Fig /15267 Body fig Cast steel ASTM A216-WCB Body fig Alloyed steel ASTM A217-WC6 Seat fig Stainless steel AISI 316L Seat fig (Stellited) Stainless steel AISI 316L Disc Stainless steel MT 440 Stem Stainless steel AISI 420 Spring Spring steel Bonnet Cast steel ASTM A216-WCB Fig Body, bonnet Stainless steel ASTM A351-CF8M Seat Stainless steel AISI 316L Disc (Stellited) Stainless steel AISI 316L Stem Stainless steel AISI 420 Spring Spring steel Temperature range (ASME) Fig / +427 C* Fig / -29 C* Fig / +538 C* *Always indicate the medium temp. in order to ensure the correct spring material. Full lift safety valve high capacity API 526 ASME 150#-2500# fig fig fig " - 8" API 526 ASME VIII Cast steel Alloyed cast steel Stainless steel Full Nozzle Adjustable opening and Reseating characteristic Other variants SS bellows O-ring seal RTJ flanges Locking screw For the above options and further info, refer to the intro pages of this section. Remark Many safety valves from the product groups " DIN flanges" and " thread" are available including ASME flanges as well. Ordering information Ordering code Material Connection size, orifice Code bonnet and and pressure rating stem cap Cast steel See table 1) Stainless steel See table 1) Alloyed steel See table 1) 1) Code bonnet and stem cap 2 - Closed bonnet without lever and gas-tight 3 - Closed bonnet with lever non gas-tight 4 - Closed bonnet with lever gas-tight 5 - Open bonnet with disc lever and non-gas-tight Attention: always indicate the set pressure and whether the safety valve is to include an Econ calibration report or calibration report with Stoomwezen/Lloyd's Register approval. Explanation order code Position Structure of order code Material. size, orifice and flanged connection Bonnet and stem cap Example H b Outlet do Dimensions Connection size, orifice and pressure rating See table a Inlet Pressure reducing valves and safety valves FC page 563

35 ASME flanges Table for conn. size, orifice and pressure rating Orifice D E F G Orifice H J K Orifice L M N P Q R T Ao mm 2 Ao " , , , ,503 Ao mm 2 Ao " , , ,838 Ao " , , , , , , ,000 do mm do " ,800 do mm do " , , ,530 do mm do " , , , , , , , x 150 1" x 2" " x 2" ½" x 2" ½" x 3" x 150 1½" x 3" " x 3" " x 4" x 150 3" x 4" " x 8" " x 8" " x 10" L x 150 1" x 2" " x 2" ½" x 2" ½" x 3" L x 150 1½" x 3" " x 3" " x 4" L x 150 3" x 4" " x 8" " x 8" " x 10" x 150 1" x 2" " x 2" ½" x 2" ½" x 3" x 150 2" x 3" " x 4" " x 4" x " x 8" " x 10" " x 10" x 150 1" x 2" " x 2" ½" x 2" ½" x 3" x 150 2" x 3" " x 4" " x 4" x " x 8" " x 10" x x x 300 Zie 1500 x 300 1½" x 3" ½" x 2" ½" x 2" ½" x 3" " x 3" ½" x 3" ½" x 3" ½" x 3" " x 3" x x 300 2" x 3" " x 4" " x 6" " x 3" " x 4" " x 6" x x Declaration 900 x 150 Pressure rating Inlet x Outlet Size Inlet x Outlet Cast steel Alloy steel Stainless steel Not stated in the API Attention: Detailed information, dimensions and calculation sheets are available on request. Pressure reducing valves and safety valves FC page 564

36 Bio/Clean service Application Econ-Leser "Bio/Clean service" safety valves are mainly applied in the food and drink industry and the pharmaceutical industry. Suitable for vapours, gases and liquids, food, chemicals, pharmaceuticals, cosmetics, breweries en beverage industries. Standard variants Materials Stainless steel with EPDM seal as per FDA guidelines Connections Pressure rating PN 16 Variants Closed bonnet without lifting lever, gas tight Closed bonnet with lifting lever, gas tight Type of approval TUV-SV D/G/F, PED and ASME NB Material specification Component Material EN and/or (DIN) W.nr. Body, seat, disc Stainless steel X2CrNiMo (G-X2CrNiMo18 10) Disc seal, bellows EPDM Stem, bonnet Stainless steel X2CrNiMo (G-X2CrNiMo18 10) Spring Stainless steel X10CrNi18-8 (X12CrNi17 7) Temperature range (DIN EN) -45 / +150 C Other variants Other connection forms, including Tri-Clamp Other variants with lower capacities and completely free of dead space Special surface treatment of wetted parts (Ra<0.8) Proximity switch/lift indicator High capacity PN 16 fig fig Stainless steel EPDM seal as per FDA guidelines Many connection types and variants possible For the above options and further information, refer to the introductory pages of this section. Ordering information Ordering code Inlet/outlet Material Bonnet Stem cap Disc lever max. set pressure Connection flange [bar] 1530 PN 16/16 SS Closed Gas-tight No PN 16/16 SS Closed Gas-tight Yes Attention: always indicate the set pressure and whether the safety valve is to include an Econ calibration report or calibration report with Stoomwezen/Lloyd's Register approval. H Dimensions d0 A0 max. set pressure a b H Weight Inlet discharge Fig Fig [mm] [mm2] [bar] [mm] [kg] b Outlet a do Inlet Fig Pressure reducing valves and safety valves FC page 565