Air safety relief valve PVS 803

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SAFETY DEVICES PVS 803 PVS type slam shut valves are pilot-operated relief valves in which the opening and the closing of the main plug is controlled by a pilot device which is very sensitive to the variations of the in-line pressures. The main features of such type of slam shut valve are the following: • Very high accuracy and rapidity of intervention (only 2% pressure); • Perfect seal up to pressures very close to the setpoint (contrary to what happens for the spring valves, the force on the plug in this slam shut valve increases when approaching the setpoint); • High outflow rate; • Reduced dimensions; FIELD OF APPLICATION • Non-corrosive fluids: (air, oxygen, nitrogen, helium, hydrogen, methane, propane, butane, etc.) • Intervention range : 1.5÷ 74 bar • DN 50 (2”); 80 (3”); 100 (4”); 150 (6”) • Flanging: Class 150, 300, 600 (EN1759-1), PN16, PN 50, PN 100 (ISO 7005-1) Operating Features:* ¢ Maximum inlet pressure: 100 bar ¢ Opening start pressure: 10% max ¢ Minimum environmental temperature: Up to -20°C ¢ Maximum environmental temperature: Up to +60°C ¢ Inlet gas temperature: Up to -20°C +60°C Construction Features: ¢ DN Nominal dimensions: 25 (1”); 50 (2”); 80 (3”); 100 (4”); 150 (6”); ¢ Flanged connections: Class 150, 300, 600 according to EN1759-1 PN16, PN 50, PN 100 according to ISO 7005