Pressure Regulators. Reval 182 ANSI 300

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1 ressure Regulators Reval 182 NI 300

2 Reval 182 NI 300 > ressure regulators Introduction Reval 182 is a pilot-controlled pressure regulator for medium and low pressure applications. Reval 182 is normally a failed close regulator and specifically will close under the following conditions: - lack of feeding to the pilot circuit. - failure of regulator main diaphragm. These regulators are suitable for use with previously filtered, non-corrosive gases. Reval 182 ig.1

Main eatures The modular design of Reval 182 pressure regulators allows retrofitting of an emergency monitor M/182, slam shut valve and or silencer on the same

The unique dynamic balancing system insures an outstanding turn down ratio combined with an extreme accurate outlet pressure control.

3 Main eatures The modular design of Reval 182 pressure regulators allows retrofitting of an emergency monitor M/182, slam shut valve and or silencer on the same body. The Reval 182 regulator is Truly a top entry design which allows ease of maintenance or retrofitting options in the field. The unique dynamic balancing system insures an outstanding turn down ratio combined with an extreme accurate outlet pressure control. Reval M/182 Reval DB/182 + B/82 Designed With Your Needs In Mind - ompact Design - Outstanding Turn Down Ratio - asy Maintenance - High ccuracy - Top ntry - Low Operation cost - Low Noise - Very Low Operating p

4 Main eatures -Design pressure : up to 40 bar (580 psi) -Design temperature: -20 to +60 (-4 to ) > -mbient temperature: -20 to +60 (-4 to ) -Range of inlet pressure bpu: 2,5 to 25 bar ( 7 to 362,5 psi) -Range of outlet pressure Wd: 7 mbar to 12 bar (2,4" inches w.c. to 174 psig) depending on installed pilot -Minimum working differential pressure: 0,1 bar (1,45 psi) -ccuracy class : up to 2,5 -losing pressure class G: from 10 to 1 depending on outlet pressure -vailable size DN: langing: class 300 R or RTJ according to NI B16.5 Materials Body Head covers tem lug Diaphragm Valve seat eals ompression fittings ast steel TM 216 WB for all sizes Dye stamped carbon steel II 416 tainless steel II 303 Nickel-lated for DN 4. Nickel-plated carbon teel on the external surface with seal edge in stainless steel for size >4" Rubberized canvas teel + vulcanized rubber Nitrile rubber ccording to DIN 2353 in zinc-plated carbon steel The characteristics listed above are referred to standard products. pecial characteristics and materials for specific applications may be supplied upon request.

5 ( Reval 182 NI 300 hoosing the pressure regulator izing of regulators is usually made on the basis of g valve and KG sizing coefficients (table 1). low rates at fully open position and various operating conditions are related by the following formulae where: Q = flow rate in tm 3 /h u = inlet pressure in bar (abs) d = outlet pressure in bar (abs). > When the g and KG values of the regulator are known, as well as u and d, the flow rate can be calculated as follows: -1 in sub critical conditions: (u<2xd) Q = KG x d -2 in critical conditions: (u 2xd) Q KG = x u 2 x ( u - d) Q Q = x g x u x sen K1 x = x g x u B > Vice versa, when the values of u, d and Q are known,the g or KG values, and hence the regulator size, may be calculated using: ( u - d u ( B-1 in sub-critical conditions: (u<2xd) KG = Q d x ( u - d) g = x u x sen Q x ( K1 x u - d u B-2 in critical conditions (u 2xd) x Q KG = 2 Q g = u 0,526 x g x u NOT: The sin val is understood to be DG. Table 1: g, KG and K1valve coefficient Nominal diameter (mm) ize (inches) g coefficient KG coefficient K1 coefficient 25 1" , " , " , " , " , " ,78 10" ,78

6 Reval 182 NI 300 > ressure regulators The above formulae are applicable to natural gas having a relative density of 0.61 w.r.t. air and a regulator inlet temperature of 15. or gases having a different relative density and temperature t in, the value of the flow rate, calculated as above, must be multiplied by a correction factor, as follows: c = x ( t ) Table 2 lists the correction factors c for a number of gases at 15. Table 2: orrection factors Type of gas ir ropane Butane Nitrogen Oxygen arbon dioxide Relative density c actor aution: in order to get optimal performance, to avoid premature erosion phenomena and to limit noise emissions, it is recommended to check gas speed at the outlet flange does not exceed 150 m/sec. The gas speed at the outlet flange may be calculated by means of the following formula: V Q = x 2 DN x d x 1 + d Where V = gas speed in m/sec Q = gas flow rate in tm3/h DN = nominal size of regulator in mm d = outlet pressure in bar g.

7 ilots ystem ilots Reval 182 regulators are equipped with series pilot 200 as listed below: - 201/ control range Wd: 7 mbar to 0,58 bar; (2,8" w.c. to 8,4 psi) - 204/ control range Wd: 0,3 to 12 bar (4,35 to 174 psig) ilots may be adjusted manually or remotely as shown in table 3: Table 3: ilot adjusting instructions ilot type.../ ilot type.../d ilot type.../ Manual setting lectric remote setting control etting increased by pneumatic signal remote point reregulators The pilot loop is completed with a device called preregulator, external to the pilot. The preregulators listed below are available: - R14/: self adjusting preregulator that automatically regulates the feeding pressure to the pilot complete with integral filter at the inlet. tandard supply with pilot 204/ - R31/: not adjusting preregulator that automatically regulates the feeding pressure to the pilot complete with integral filter at the inlet. tandard supply with pilot 201/ - R33/: with adjustable set point, range of feeding pressure to the pilot up =0,1 to 14 bar (1,44 to 203 psig) ccessories on request or Regulator - stroke limiter - flow-limiting devices - limit switches - position transmitters - stainless steel fittings, single or dual sealing or ilot - supplementary filter 14 - dehydrating filter 14/D

8 Reval 182 NI 300 > ressure regulators Incorporated silencer DB/182 Whenever specific noise limits are required, the silencer allows you to considerably reduce the decibel (db) noise emissions during the gas pressure regulators operation as in example (ig. 2). The diagram in ig. 3 demonstrates the silencers efficiency at specified working conditions. The Reval 182 pressure regulator can be supplied with an incorporated silencer in either the standard version, with incorporated slam-shut or incorporated monitor regulator. With the built-in silencer the g and KG valve coefficients are are 5% lower than the corresponding version without the silencer. Given the modular arrangement of the regulator, the silencer may be retrofitted to both standard Reval 182 version as well as those with incorporated slam-shut or monitor, without any need to piping modification. ressure reduction and control operate the same manner as in standard version. dba () Not ilenced Reval 182 Dn 50 u = 4 bar d = 0,02 bar ilenced low rate tmc//h x 1000 Reval DB/182 ig.2 ig.3

9 Monitor The monitor regulator is used for over pressure protection either as a single unit or in conjunction with a relief valve. It is an emergency regulator that comes into operation when the main control regulators downstream operating pressure increases until reaching the monitor set-point pressure. The Monitor regulator is then available to take over the pressure control. The Monitor regulator is available in two versions, incorporated in the same regulator body as the control regulator or installed as a separate regulator. M/182 Incorporated This emergency regulator (monitor) is directly assembled to the body of the main regulator. Both pressure regulators, therefore, use the same valve body with the following exceptions: - are governed by two different independent pilots and by separate regulator valve seats. - the operational characteristics of the M/182 monitor are the same as for the Reval 182 regulator - the g and KG coefficients of regulator having an incorporated monitor are 8% lower than those for standard version. nother great advantage offered by the incorporated monitor regulator is that it can be installed at any time, even on an already existing Reval 182 without piping modifications. This solution consent the construction of reduction lines with compact dimensions. Reval M/182 ig.4

10 Reval 182 NI 300 > ressure regulators In-line monitor The monitor is generally installed upstream of the main regulator (fig.5). lthough the function of the monitor regulator is different, the two regulators are virtually identical from the point of view of their mechanical components. The only difference is that monitor is set at a higher pressure than the main regulator. The g and KG coefficients of the regulator plus in-line monitor system are about 20% lower than those of the regulator alone. ig.5 M/ ccelerator When the monitor is required to take over more rapidly in the event of a main regulator failure, an M/ or V/25 accelerator pilot is installed on the monitor. Installation of the accelerator is mandatory when monitor is used on safety accessory according to D directive. Depending on a downstream pressure signal, this device discharges the gas enclosed in the motorisation chamber of the monitor regulator, allowing the monitor to take over faster. The set point of M/ accelerator may is usually set higher than set point of the monitor by 0.3 to 0.5 bar. V/25 accelerator is available too with pressure set range Who 15 mbar to 6 bar.

11 lam shut This device immediately stops gas flow (V) whenever a failure causes downstream pressure to rise reaching the set point of the slam-shut itself. The slam-shut device can also be closed manually. Incorporated lam shut The Reval 182 pressure regulator offers the possibility of installing an incorporated slum shut valve B/82 (fig.6) or valve (fig.7), either from the factory or retrofit in the field. The g and KG coefficients of a regulator plus incorporated slam-shut system are 2,5% lower than those for standard versions. The incorporated slam shut can also be retrofitted to Reval 182 regulators without modifying the pressure regulator assembly. The main characteristics of this device are: - overpressure and underpressure pressure shut off; - manual push-button control; - option for pneumatic or electromagnetic remote control; - manual re-setting with internal by-pass activated by the lever mechanism; - compact dimensions; - easy maintenance; - possibility of installing remote signal devices (contact switches or proximity switches). Reval B/82 ig.6 Reval ig.7

12 Reval 182 NI 300 > ressure regulators Installation Whenever Reval 182 pressure regulator is being installed, it is essential to follow a few basic rules in order to ensure the achievement equipment s operational and performance characteristics. These rules may be summarised as follows: a) filtering: the gas arriving from the main pipeline must be adequately filtered; it is also advisable to make sure that the pipe upstream of the regulator is perfectly clean and void of residual impurities; b) pre-heating: whenever the pressure drop at the regulator is considerable, the gas must be pre-heated enough to avoid the formation of ice during decompression (for reference natural gas the temperature drop is about 0,4 to 0,5 for every bar of pressure reduction); c) condensate collector: natural gas sometimes contain traces of vapour-state hydrocarbons that can interfere with the functioning of the pilot. It is therefore necessary to install a condensate collector, complete with drainage system, upstream of the pilot circuit; d) Outlet pipe size must also be sized correctly so the velocity is not to high. High velocity will result in improper pressure control. e) impulse take-off: for correct operation, the impulse take-off must be located in the right position. Between the regulator and the downstream take-off there must be a straight lengh of, pipe 4 times the diameter of the outlet pipe and downstream the take-off, there must be a further lengh of pipe 2 times the same diameter (example below). ossible installation schemes RVL RVL Inlet pressure Outlet pressure Motorization monitor eed pilot Motorization regulator ig.8

13 RVL DB/182 + RVL B/82 ig.9 RVL DB/182 + RVL ig.10

Reval 182 NI 300 > ressure regulators Reval 182 H G DN DN B D Overall dimensions in mm ize (mm) Inches B D G H Tubing onnections 25 1 197 320 100 130 170 50 2 267 130 160 285 480 205 80 3 317 150 200

14 Reval 182 NI 300 > ressure regulators Reval 182 H G DN DN B D Overall dimensions in mm ize (mm) Inches B D G H Tubing onnections Øe10 x Øi Weights in Kgf ace to face dimensions according to I and N

Reval 182 + B/82 G H DN DN N * VB/93 B D D B * L M Overall dimensions in mm ize (mm) Inches B D G H L M

205 161* 255* 511* 146* 219* 125* 80 3 317 335 445 340 530 765 260 185* 322* 615* 146* 246* 130* 100 4

200 8 568 650 695 450 850 1125 370 10 708 770 550 800 550 760 1320 *indicates Dimensions with the MODL

15 Reval B/82 G H DN DN N * VB/93 B D D B * L M Overall dimensions in mm ize (mm) Inches B D G H L M N Tubing onnections * 212* 465* 98* 194* 125* * 255* 511* 146* 219* 125* * 322* 615* 146* 246* 130* * * * * 263* 130* Øe10 x Øi *indicates Dimensions with the MODL Weights in Kgf 45 35* 56 52* 88 72* * ace to face dimensions according to I and N

Reval 182 NI 300 > ressure regulators Reval 182 + M/182 G H DN DN D B L Overall dimensions in mm ize (mm) Inches B D G H L Tubing onnections 25 1 197 320 260 640 260 170 50 2 267 290 285 700 295 205

16 Reval 182 NI 300 > ressure regulators Reval M/182 G H DN DN D B L Overall dimensions in mm ize (mm) Inches B D G H L Tubing onnections Øe10 x Øi Weights in Kgf ace to face dimensions according to I and N

Reval 182 + DB/182 H G DN DN B D K Overall dimensions in mm ize (mm) Inches - B D G H K 25 1 197 520 100 130 450 610 820 215 370 50 2 267 550 130 160 480 640 850 295 400 80 3 317 675 150 200 585 785

17 Reval DB/182 H G DN DN B D K Overall dimensions in mm ize (mm) Inches - B D G H K Tubing onnections Øe10 x Øi Weights in Kgf ace to face dimensions according to I and N 334

Reval 182 NI 300 > ressure regulators Reval 182 + DB/182 + B/82 H G DN DN N * Overall dimensions in mm D B K D B L * M ize (mm) Inches B D G H K L M N Tubing onnections 25 1 197 520 300 390 610 820

18 Reval 182 NI 300 > ressure regulators Reval DB/182 + B/82 H G DN DN N * Overall dimensions in mm D B K D B L * M ize (mm) Inches B D G H K L M N Tubing onnections * 212* 465* 98* 194* 125* *indicates Dimensions with the MODL * 255* 511* 146* 219* 125* * 322* 615* 146* 246* 130* * * * * 263* 130* Øe10 x Øi Weights in Kgf 56 35* 90 52* * * ace to face dimensions according to I and N 334

Reval 182 + DB/182 + M/182 H G DN DN D B L K M Overall dimensions in mm ize (mm) Inches B D G H L M K Tubing onnections 25 1 197 520 260 450 610 780 260 215 370 50 2 267 550 290 480 640 840 295 295

19 Reval DB/182 + M/182 H G DN DN D B L K M Overall dimensions in mm ize (mm) Inches B D G H L M K Tubing onnections Øe10 x Øi Weights in Kgf ace to face dimensions according to I and N

20 ietro iorentini.p.. via.ermi 8/10 I rcugnano (VI) Italy Tel ax via Rosellini 1 I Milano Italy Tel ax T-s544- ugust 2008

Pressure Regulators. Aperflux 851

Pressure Regulators. Aperflux 851 Pressure Regulators Aperflux 851 80 1 2 3 4 5 6 7 Aperflux 851 > Pressure regulators Introduction Aperflux 851 is a boot style pilot-controlled pressure regulator for medium and high pressure applications.