VALFONTA PRESSURE REGULATOR WITHOUT AUXILIARY ENERGY EXCESS PRESSURE VALVE (PRESSURE RELIEF VALVE) MODEL S1 MAIN CHARACTERISTICS
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1 PRESSURE REGULATOR WITHOUT AUXILIARY ENERGY EXCESS PRESSURE VALVE (PRESSURE RELIEF VALVE) MODEL S1 MAIN CHARACTERISTICS The S1 model is self-operated bellows sealed pressure excess valve. This series of regulators is suitable for steam, compressed air, non-hazardous gases and liquids. It has a very quick response to the demand. Globe valve, single seat, outlet pressure compensated by diaphragm and inlet pressure compensated by the gasket (from DN65). The stem is sealed by the double layer bellow. It is made in stainless steel 316Ti. To avoid any damage on the bellows, S1 series is provided of an anti rotation system. The diaphragm is enhanced with an intermediate lining. Regulation range between 0,5 and 16 barg with different actuators. Valve opens when the upstream pressure increases. Maximum inlet pressure 16 barg. Fluids Liquids, compressed air, neutral gases and steam. Nominal pressure Sizes PN25 PN40 Class 150 Class 300 DN15 to DN100 DN125 to DN200, consult Body material Nodular Iron ( GGG40.3 ) Carbon steel ( GSC25N ) Stainless steel ( ) Connections Trim material Flanged DIN PN16-PN40 Flanged ANSI 150 / 300 Threaded BSP / NPT, consult Stainless steel AISI 316L Diaphragm Material EPDM -40ºC to 125ºC EPDM + PTFE 125ºC to 250ºC Other configurations: - Kv or CV reduced. - A control line kit for pressure tapping directly at the body is available on request (optionally with or without condensation tank) for set points > 1 bar. - Condensation tank (pot) is available and necessary for steam or fluid upper to 125 ºC, to protect the diaphragm against excessive temperature. - NBR Diaphragm
2 A Body valve B Seat (replaceable) C Seal D Compensation gasket E Bellows F Adjusting nut G Nut H Diaphragm I Actuator casing (Upper) J Actuator casing (Lower) K Springs L Impulse pipe M Tank N Coupling OPERATION The valve opens when inlet pressure increases. To control the pressure with the excess pressure valve S1 model, the diaphragm (H) is compressed by the springs (K) through the adjusting nut (F). The valve is always closed upstream pressure = downstream pressure. When upstream pressure arrives to the diaphragm via external control line (L), and rises above the adjusted set point, valve opens proportionally to the change in pressure. This set point can be adjusted with the adjusting nut (F). Standard installation when temperature is upper 0ºC Another option for liquids and neutral gases until 80 ºC Starting from size DN65 valve is provided with a balancing gasket (D) to compensate inlet pressure. This position is not admitted
3 DN65 to DN150
4 DN15 to DN50
5 Ref Description Material Ref Description Material 1 Body Nodular Iron EN-JS1049 (GGG40.3), Bronze RG10, Carbon Steel (GSC-25N), Stainless steel ( AISI 316) 24 Diaphragm stem Carbon steel 3 Lower support seal Stainless steel L 25 Hexagonal screw M8 A-2 Stainless steel 4 Allen screw A-2 Stainless steel 25b Hexagonal Nut M8 A-2 Stainless steel 5 Balancing gasket Cover Stainless steel L 26 Actuator casing (lower) (Steel sheet with epoxy paint) or Stainless steel sheet AISI Cover Carbon steel Stainless steel AISI 316L 7 Screw Carbon steel A-2 Stainless St. (A-4 optionally) 8 Bellow guide or Carbon steel Stainless steel AISI 316L 27 Allen screw Carbon steel 28 Antirotation system Carbon steel 29 Regulation stem (Stainless steel AISI 304) 9 O-ring Viton 30 Guide ball bearing (Stainless steel AISI 304L) 10 Springs (Spring Carbon steel 55 Si 7) 31 Column Carbon steel 11 Ball bearing (Bearing steel 100 Cr 6) 32 Nut bellow Carbon steel 12 Upper support springs Carbon steel 33 Bellow (Stainless steel AISI 316Ti) 13 Adjusting nut Carbon steel 34 Lower support springs Carbon steel 14 Support plate Carbon steel 35 Gasket Graphite with metal (x2) 15 Nut M Carbon steel 36 Guide Stainless steel AISI 316L 16 Support screws M Carbon steel 37 Balancing Gasket Graphited PTFE 17 Nut M Carbon steel 39 Bush Stainless steel AISI 316L 18 Coupling Brass 40 Seal Graphited PTFE (others on request) 19 Diaphragm EPDM or EPDM+PTFE 42 Nut A2-70 (x2) 20 Actuator casing (upper) (Steel sheet with epoxy paint) or Stainless steel sheet AISI Seat Stainless steel AISI 316L 21 Diaphragm screw (Stainless steel AISI 304) 50 Allen screw Steel 8.8 / Stainless steel A O-ring Viton 51 Cover Stainless steel AISI 316L 23 Diaphragm plate Carbon steel 52 Gasket
6 Dimensions, weight and Kv value DN Kv (m³/h) A DIN (mm) A ANSI150 (mm) (inches) 7,25 8, ,9 11,75 13,88 consult A ANSI300 (mm) (inches) 197 7, , , , , ,49 L (mm) Weight (kg.) available on request Approx. Downstream pressure ranges (D) Typical installation Range (bar g) DN15 a DN50 DN65 a DN100 DN125 a DN150 0,5-1, Approximate diameter of the recommended actuator (mm) 1.- Check valve 2.- Filter 3.- Pressure gauge (inlet pressure) 4.- Pressure gauge (outlet pressure) 5.- Excess pressure valve S1 6.- Tank (if necessary)
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Mark 50 Series. Back Pressure Regulators Mark 50 Self-Operated Back Pressure Regulators. Self-Operated Back Pressure Regulators.
Mark 50 Series Self-Operated Back Pressure Regulators The Mark 50 Sliding Gate Back Pressure Regulator is used to regulate upstream pressure at a predetermined setpoint. The spring in the Mark 50 holds
PNEUMATIC CONTROL VALVES V403 DN65 DN100 (V403 globe valves series with linear actuators PA or EL series)
PNEUMATIC CONTROL VALVES V403 DN65 DN100 (V403 globe valves series with linear actuators PA or EL series) DESCRIPTION The PV403 control valves are three-way valves for mixing or diverting service. The
Series 240 Electric Control Valve Type 3241/3274 Globe Valve Type 3241 Electric Control Valve Type 3244/3274 Three-way Valve Type 3244
Series 240 Electric Control Valve Type 3241/3274 Globe Valve Type 3241 Electric Control Valve Type 3244/3274 Three-way Valve Type 3244 Application Versatile control valves with globe or three-way valve
BS 1452 Gr Gr. 420/ Gr. 420/ AB2 304 C C S S S S16. E mm
WAFER TYPE BUTTERFY VAVE SPECIFICATION FOR BS EN 1092-2 PN10 / PN16 FANGE MOUNTING FACE-TO-FACE DIMENSION TO ISO 5752 / BS 5155 / BS EN 593 EVER / WORM GEAR OPERATOR PRESSURE / TEMPERATURE RATINGS BFV-WB
SPIRA-TROL 1/2" to 4" ANSI Two-port KEA, KFA and KLA Control Valves
1/2" to 4" ANSI Two-port KEA, KFA and KLA Description SPIRA-TROL is a range of two-port single seat globe valves with cage retained seats conforming to ASME/ANSI standards. These valves are available in