Accessories for Potable Water Installations

Transcription

1 5. ccessories for Potable Water Installations Flamco s Prescor safety valves protect potable water systems from exceeding the maximum design operating pressure. Once the set pressure has been reached the safety valve will open to prevent a further rise in pressure. Prescor valves are produced in a variety of fitting sizes and pressure ratings. The materials and construction of Flamco safety valves are of the highest quality to ensure total safety and peace of mind. They can be used in combination with any boiler system. 148

2 ccessories for Potable Water Installations 5 Safety Valves Pressure Reducing Valves Wall Mounting Prescor For protecting water heaters and potable water systems. onnection sizes: ½", ¾", 1". Pressure Reducing Valve PRV For reducing the pressure. Utilises the proven bladder principle of pressure regulation. M For easy mounting Flexcon and irfix /D (8-25 litres) to a wall. Prescor S For protecting water heaters and larger potable water systems. onnection sizes: 1 ¼", 1 ½", 2". Reduflex For reducing the pressure. djustable with captive nut. S- and For mounting an irfix P expansion vessel (2-35 litres) to the wall. To be combined with M. ccessories for the Installer Safety Groups Prescor I Protects the potable water system from excess pressure during the heating cycle. Suitable for all kinds of heated water preparation devices and storage apparatus. Kiwa, elgaqua certified. Flexbrane Protects the potable water system from excess pressure during the heating cycle. elgaqua. NF, S certified. Isolating valve irfixontrol Enables easy connecting and disconnecting of irfix or D expansion vessels without interrupting the system flow. Thermostatic Mixing Valves Flamcomix Standard Limits the maximum output temperature. djustable temperature range: / Flexcon DT For unmounting Flexcon and irfix vessels. Suitable for 2-25 litre vessels. Precharge pressure tester For testing pre-charges of Flexcon and irfix expansion vessels. Pressure range bar. Vessel arrier For easy and safe handling and transporting the exchanged vessel. Flamcomix FP Limits the maximum output temperature. djustable temperature range: With back flow preventer. Flamcomix H Limits the maximum output temperature. djustable temperature range: For high capacities. Water Hammer rrestor Flexofit S bsorbs water hammer in sanitary mains water systems. With butyl diaphragm. 149

3 Prescor oiler Valves The Highest Quality of System Protection The Prescor and S boiler valves protect sealed mains water systems against excess pressure. Such a safeguard is a requirement because of the expansion of system water and the presence of a non-return valve. Of course, water cannot be compressed, so without this sort of safeguard the pressure in the system could rise to a dangerous level. Local regulations and standards and water pressures must be observed when using Prescor and Prescor S valves at all times. ap for lifting the valve. Spring for setting the pressure of the safety valve. Diaphragm that prevents moisture and dirt from getting into the moving parts. Valve with rubber seal. PRESOR enefits Solid brass housing. Wide range so that the correct valve can be installed appropriate to the application. ecause of the ''pop'' effect these valves have a high blow-off capacity. an be used in combination with any storage boiler system. onstruction and choice of materials are your guarantee of safety. Well Designed Technology and pplication The seating of Prescor boiler valves is designed so that it not only makes a perfect seal, but can also achieve a large blow-off capacity. The hardness of the rubber is adapted according to the set pressure of the safety valve. Due to this combination of a specifically designed seating and special rubber, it is possible to achieve optimum safety. 150

4 ccessories for Potable Water Installations 5 How It Works When the system pressure reaches the set pressure, the Prescor boiler valve begins to vent, whereby the pressure stops rising. If, due to specific circumstances, the pressure rapidly rises over the set pressure, the Prescor boiler valve will open fully, creating a large blow off capacity. This is a permanent, reliable safeguard against overpressure. Venting can be prevented by fitting a suitably sized irfix expansion vessel for sanitary systems. The valve size of both the Prescor and the Prescor S is determined by the capacity and output of the boiler. Lifting lever. The set pressure of the safety valve is locked and cannot be changed. To prevent limescale, the moving parts must be kept dry in all circumstances. The diaphragm ensures this. ll Prescor and Prescor S valves are individually tested to guarantee their function and they comply with European Directive 2014/68/EU, the Pressure Equipment Directive. PRESOR S Installation The Prescor safety valve should be installed at the boiler's cold water connection. efore doing this the pipe must be flushed properly. To ensure continued service there may be no valves or other fittings which impede water circulation between the safety valve and the boiler. The Prescor valve must remain easily accessible and as close as possible to the boiler. N.. Prescor boiler valves must not be installed with the discharge port facing upwards. XWRONG OK 151

5 PRESOR ND S SFETY VLVES For protecting water heaters and potable water systems. In accordance with PED 2014/68/EU and EN Prescor Min./Max. working temperature: 0 / 95. Peak load: 140. D G F Set pressure [bar] onnection Dimensions apacity [kw] D F G Prescor 1 / Rp 1 / 2" Rp 1 / 2" Prescor 1 / Rp 1 / 2" Rp 1 / 2" Prescor 1 / Rp 1 / 2" Rp 1 / 2" Prescor 1 / Rp 1 / 2" Rp 1 / 2" Prescor 1 / Rp 1 / 2" Rp 3 / 4" Prescor 1 / Rp 1 / 2" Rp 3 / 4" Prescor 1 / Rp 1 / 2" Rp 3 / 4" Prescor 3 / Rp 3 / 4" Rp 1" Prescor 3 / Rp 3 / 4" Rp 3 / 4" Prescor 3 / Rp 3 / 4" Rp 1" Prescor 3 / Rp 3 / 4" Rp 1" Prescor Rp 1" Rp 1 1 / 4" Prescor Rp 1" Rp 1 1 / 4" Prescor Rp 1" Rp 1 1 / 4" Prescor Rp 1" Rp 1 1 / 4" Prescor 1 / 2 M x K R 1 / 2" K Prescor 1 / 2 M x K R 1 / 2" K Prescor 1 / 2 M x K R 1 / 2" K

6 Prescor S Min./Max. working temperature: 0 / 95. Peak load: 140. ccessories for Potable Water Installations 5 Set pressure [bar] Inlet onnection apacity [kw] Prescor S 1 1 / G 1 1 / 4" F G 1 1 / 2" F Prescor S 1 1 / G 1 1 / 4" F G 1 1 / 2" F Prescor S 1 1 / G 1 1 / 4" F G 1 1 / 2" F Prescor S 1 1 / G 1 1 / 2" F G 2" F Prescor S 1 1 / G 1 1 / 2" F G 2" F Prescor S 1 1 / G 1 1 / 2" F G 2" F Prescor S G 2" F G 2 1 / 2" F Prescor S G 2" F G 2 1 / 2" F Prescor S G 2" F G 2 1 / 2" F Outlet 153

7 Flamco Safety Groups For Effective Safeguarding of Your System ombination Pressure Relief Valves and Safety Groups part from the Prescor and Prescor S boiler valves, Flamco also supplies different types of Prescor I and Flexbrane safety groups. The enefits of Prescor I ½". Sound-class 1 approved. KIW/elgaqua certified. With ½" 15 mm compression fitting. Large flow capacity, so hardly any loss of pressure through the outlet. Tundish can be rotated through 360. Hence it can be fitted in almost any position. ompact, so recommended for built-in appliances. Non-return valve prevents water flowing back into the supply line. Opening for the non-return valve at the back. Relief valve. all valve. Tundish. PRESOR I The tundish can be rotated through 360. Hence it can be fitted in almost any position. ompact model, modern design. 154

8 ccessories for Potable Water Installations Prescor I graph 1.5 Δ Pressure Δ [bar] (bar) Prescor I ½" Prescor I ¾" apacity [m(m 3 /h] 3 /h) PRESOR I Flexbrane: onnection adapter from ¾" to ½". onnection to water heating device. old water connection. all valve. Non-return valve. Non-return valve inspection button. Pressure relief valve. ir gap rendering a separate funnel unnecessary. Discharge pipe connection. FLEXRNE E 155

9 SFETY GROUPS For protecting the potable water system from excess pressure during the heating cycle. non-return valve with inspection port will prevent the water (e.g. from a water heater) from flowing back into the mains water pipe. Suitable for all kinds of heated water preparation devices and storage apparatus. non-return valve with inspection port prevents the water (e.g., from a boiler) from flowing back into the potable water pipeline. With ball valve for easy, quick and safe opening and closing. The funnel can be rotated up to 360. Hence it can be fitted in almost any position. Large flow-through capacity and therefore hardly any pressure drop over the valve. Very compact and therefore recommended for the most modern built-in devices. Prescor I Prescor I ½": With extensive coupling set for the funnel. Min./Max. working temperature: 0 / 95. Peak load: 140. For storage vessels up to [l] Set pressure [bar] Sound class onnection (compression) Prescor I 1 / x 15 x Prescor I 3 / x 22 x Flexbrane Min./Max. working temperature: 0 / 95. Peak load: 140. Set pressure [bar] onnection Flexbrane E 1 / 2 7 ½" F (with nipple) x ¾" M x 1" M Flexbrane E 3 / / 4" F x 3 / 4" M x 1" M onnection kit 1 1 / 4 1" 1 / 4 x (for twinning of 2 GS 1) Flexbrane E-H 3 / 4 hor. 7 3 / 4" F x 3 / 4" M x 1" M Flexbrane E / 4 vert. NF 7 3 / 4" F x 3 / 4"M x 1"M S Flexbrane NF - S 7 3 / 4" F x 3 / 4" M x 1" M Flexbrane SST NF - S 7 3 / 4" F x 3 / 4" M x 1" M Flexbrane F 1 hor. 7 1" F x 1" M x 1" M Plastic siphon for E and 7 1" x 1" connection piece Dielectric connector 3 / 4 MF 7 3 / 4"

10 PRESSURE REDUING VLVES ccessories for Potable Water Installations 5 Pressure Reducing Valves (PRV) ompact with excellent performance. Utilises the proven bladder principle of pressure regulation. The adjustment is by screw with locking nut and the gauge supplied may be mounted on either side. omplete with an integral serviceable strainer. System connections Max. pressure [bar] Dimensions 3 / 4 PRV with gauge 3 / 4" F PRV with gauge 1" F PRV with gauge 2" F Reduflex With captive nut. onnection Reduflex adjustable 3 / 4 3 / 4" M x 3 / 4" F IRFIXONTROL With this component the flushing function is fully guaranteed. When the vessel is disconnected from the system the system flow remains in function. irfixontrol enables an easy yearly precharge check of the irfix or D expansion vessel. irfixontrol D E onnections Dimensions Weight [kg] D E irfixontrol G 3 / 4" M G 3 / 4" F ERT 157

11 Flamcomix: For Safe Water onsumption To efficiently store as much heat as possible the water temperature in a boiler or combo-vessel is higher than 60. t this temperature level there is a risk of scalding within a few seconds. To prevent this a thermostatic mixing valve is used between the vessel and the draw-off point or several draw-off points. The Flamcomix limits the maximum output temperature of the following draw-off points. This permits the input temperature to be maintained at a high level thus preventing the growth of Legionella bacteria. The output temperature can be set to a safe and comfortable level. Inclusion of a Flamcomix valve will improve safety in the hot water system. In addition, the comfort of the system is increased by the constant output temperature. Furthermore, you avoid wasting water by an immediate supply of water at the correct temperature. In short, there are three big advantages to using a thermostatic mixing valve: More comfortable. Safer. More economical. General operations of the thermostatic mixing valve The Flamcomix is a thermostatic mixing valve, which means that the mixing valve acts automatically on the setting of the very sensitive built-in thermostat. The thermostat adjusts the control valve to moderate the hot water throughput to the outlet. This way the Flamcomix limits the maximum output temperature. If the Flamcomix is used as a central mixing unit, due to the large capacity, it is able to supply a constant water temperature to the output side, even in systems with large buffer vessels filled with hot water. Pressure loss diagram Pressure loss [mbar] Flow rate [l/min] Reference DN K vs [m 3 /h] V [l/min] ack-flow safeguard ,6 26 No ,2 36 No ,4 56 No ,5 25 Yes ,1 35 Yes ,3 55 Yes 7 (H) 25 6,1 102 No 8 (H) 25 5,9 102 Yes 158

12 Reliable Operation ccessories for Potable Water Installations 5 The main advantages: Stable output The output temperature is maximum ± 3 of the set temperature. This way the Flamcomix is very capable of absorbing sudden temperature fluctuations. No calcification Lime cannot attach to the synthetic internal parts and the PTFE coating. This way calcification is prevented (only in the standard series). Setting accuracy The multi-turn setting control permits fine adjustment of output temperature. Locking cap The locking cap prevents accidental adjustment of the output temperature. Little pressure resistance Minimal pressure drop is achieved by the optimised design of the internal parts and the back-flow preventor that was developed especially for this purpose. djusting knob / locking cap ontrol spindle Locking mechanism ack-flow safeguard ontrol valve Thermostatic wax element ontrol valve setting spring Group control Draw-off point control Diverting + Group control 159

13 FLMOMIX Flamcomix Mixing Valve Maximum operating temperature: 100 (including back-flow safeguard 90 ). Operating pressure range: bar. Maximum operating pressure (dynamic): bar. Maximum pressure differential of hot / cold supply: 2 bar. For a stable output temperature: ± 3 (cold water) and ± 15 (hot water). Noise category: 2. Installation position: any position. Housing: non-dezincifiable brass. Internal parts: high quality synthetics. Seals: EPDM. Spring: stainless steel. rass housing with anti-lime coating (PTFE). For application with potable water according to Guideline 98/83/EG. D E DN (syst.) onnection () djustable temperature range [ ] ack flow preventer Dimensions Flamcomix FS DN15 DN15 3 / 4" no 76.0 max Flamcomix FS DN20 DN20 1" no 77.0 max Flamcomix FS DN25 DN / 4" no 77.0 max Flamcomix FS DN15 DN15 3 / 4" no 76.0 max Flamcomix FS DN20 DN20 1" no 77.0 max Flamcomix FS DN25 DN / 4" no 77.0 max Flamcomix FS FP DN15 DN15 3 / 4" yes 78.5 max Flamcomix FS FP DN20 DN20 1" yes 79.5 max Flamcomix FS FP DN25 DN / 4" yes 79.5 max Flamcomix H DN25 DN / 4" no 85.0 max D E 160

14 Flamcomix Insulation box ccessories for Potable Water Installations 5 D E Dimensions D E Flamcomix insulation box DN Flamcomix insulation box DN Flamcomix insulation box DN Flamcomix H insulation box DN Flamcomix ackflow Preventer set vailable as Flamcomix with integrated check valve or Flamcomix and check valve as separate components. The check valves are specifically designed for use in a Flamcomix thermostatic mixing valve. This results in a very low pressure drop. Dimensions Flamcomix ackflow preventer set DN Flamcomix ackflow preventer set DN Flamcomix ackflow preventer set DN Flamcomix H ackflow preventer set DN nach KTW Flamcomix onnections set Flamcomix onnections set 3 / 4 x 1 / 2 (3x) Flamcomix onnections set 1 x 1 / 2 (3x) Flamcomix onnections set 1 x 3 / 4 (3x) Flamcomix onnections set 1 1 / 4 x 1 (3x) Flamcomix Precision Thermometer Precision Thermometer

15 Prevent Water Hammer Simply and Effectively The Flexofit water hammer arrestor has been specially developed to absorb water hammer in sanitary mains water systems and is made of chrome-plated brass. Some Possible auses of Water Hammer valve (or solenoid) or tap closing too quickly. The non-return valve. pump that suddenly cuts in or out. Pressurized gas cushion. Rubber diaphragm. Water at system pressure T-fitting. The Flexofit water hammer arrestor absorbs the wave of pressure before it can develop into water hammer. The Flexofit does this by having two areas that are separated by a rubber diaphragm. On one side, there is a gas cushion under pressure, while the other side is in connected to the system. The gas cushion compresses and absorbs the wave of pressure. 162

16 ccessories for Potable Water Installations 5 Selection Table System pressure [bar] Pipe diameter Max. pipe length up to the 1 st bend [m] Number of Flexofit S water hammer arrestors to be fitted ½" (15 mm) ¾" (22 mm) " (28 mm) ¼" (35 mm) This table is based on a flow rate of 3 m/s. Flexofit in the line leading to a urinal flusher In combination with a wash hand basin Used with a washing machine Water hammer can be described as a change in pressure in a sealed pipeline as a consequence of sudden changes in the flow speed of fluid in the system. This creates a wave of pressure that moves rapidly through the line. This wave of pressure may result in the creation of vibrations, noise or even a fracture in the pipe or serious damage to equipment and pumps. It is thus important to prevent water hammer. FLEXOFIT T-PIEE 163

17 FLEXOFIT S WTER SHOK RRESTOR Flexofit S absorbs water hammer in order to minimize noise and damage to the system. Solid brass, chromium plated housing. Maximum working pressure: 10.0 bar. Maximum working temperature: 90. Membrane: butyl rubber. Flexofit S Pre-charge [bar] Dimensions onnection Ø H. Flexofit S 1 / R 1 / 2" Flexofit S 1 / 2 with T-fitting G 3 / 4" F x G 3 / 4" M Flexofit S T-fitting For mounting Flexofit water hammer arrestors quickly and easily between the tap and the washing machine or dish-washer. onnection T-fitting Flexofit S G 3 / 4" F x G 1 / 2" F x G 3 / 4" M WLL MOUNTING M For mounting Flexcon/irfix vessels of 8-25 litres. Provided with a slot into which the Flexcon vessel clamp ring fits precisely. Tightening the two bolts is all that is needed to make a sturdy connection. Material: D01 -m, zinc coated. onnection to the wall with two Ø8 plugs and two Ø6 screws with hexagon head (wrench 10). onnection of the vessel to the M by means of two M5 bolts with cross head. Separately available are sets of 5 hose clamps for connection vessels without clench ring (size approx. Ø 325 mm). Dimensions Flexcon vessel support M Flexcon vessel support M

18 S- and For mounting an irfix P expansion vessel (2-35 litres) to the wall. ccessories for Potable Water Installations 5 pplication S- and for fitting irfix P vessels, to be combined with M OTHER ESSORIES Flexcon DT To assist in mounting and removing Flexcon and irfix vessels. pplication Dimensions Flexcon DT Flexcon/irfix Vessel arrier handy vessel carrier which makes it very easy and safe to handle or transport the exchanged vessel. Easy to use. Prevents spilling of (polluted) heating installation water in your transporter or at home with the customer. The vessel can be handled with one hand only. Easily mounted and removed (for multiple use). onnection pplication Vessel carrier G 3 / 4" F Flexcon/irfix Precharge Pressure Tester Pressure range [bar] Precharge tester ( bar)