UL Listed external relief valves used on ASME containers. The relief valve is held close by the spring force seating the rubber valve disc against the orifice. When the tank pressure exceeds the spring force, the valve disc lifts off the orifice allowing gas to discharge through the valve to the air. When the tank pressure decreases enough, the spring force closes the valve disc back against the orifice stopping further discharge. All working parts of these valves are outside the container connection so they must be protected against mechanical damage.
Features
- Space Saving Construction: Small relief valve size allows installation where space is limited
- Economical: Low initial cost, easy installation, and high capacity per dollar invested reduces total cost of having relief valve capabilities in your system
- Durable: Brass body construction and stainless steel spring reduce susceptibility to corrosion damage and the preset, pinned spring retainer prevents relief valve setpoint tampering
Specifications
- Container Type: ASME
- Container Connection: 3/4 in. MNPT
- Start to Discharge Pressure: 312 psig (21.5 bar)
- Flow Capacity: 765 SCFM (1300 SCMH AIR)
- Maximum Allowable Relief (Inlet) Pressure: 420 psig (29 bar)
- Temperature Capabilities: -20 to 160°F (-29 to 71°C)
- Body, Poppet & Spring Retainer: Brass
- Disk: Nitrile (NBR)
- Spring and Retainer Pin: Stainless Steel
