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VRVH Series Vent Relief Valve
Brand: Generant Inc
A compact, highly accurate, direct acting pressure relief valve.
Factory preset to desired crack pressure and/or flow specifications. Internal adjustment provides tamper proof safety against inadvertent pressure changes.
Available vent to atmosphere or inline configurations. Valves feature an encapsulated O-ring seal to prevent extrusion at higher differential pressures.
Features- Accurate and repeatable cracking pressure
- 100% factory preset and tested
- Zero leakage to 95-98% of set pressure
- Tamper proof adjustment
- Excellent reseal performance
- Compact size
Specifications
Brand
Burst Pressure
- psig: > 1,000 (kPa: 6,900, bar: 69) - VRVHI Series
Enclosure, Body Material
- Brass
Flow Rate
- 12 to 175 scfm - VRVHI Series
- 7.5 to 150 scfm - VRVH Series
Materials of Construction
- Spring Retainer: 316 Stainless Steel - ASTM A479
NPT Connection
- 1/4” NPT Female
- 1/4” NPT Male
- 1/8” NPT Female
- 1/8” NPT Male
Nut & Bolt Material
- Locknut: 300 Series Stainless Steel (18-8)
O-Ring Material
- O-Ring Cup: Brass, ASTM B16
Pressure Range
- psig: 150 to 600 (kPa: 1,030 to 4,200, bar: 10.3 to 42)
Proof Pressure
- psig: 750 (kPa: 5,200, bar: 52) - VRVHI Series
Seat / Seal Material
- Seal: Buna-N
- Seal: Ethylenepropylene
- Seal: Neoprene
- Seal: PTFE
- Seal: Silicone
- Seal: Viton
Spring Material
- 302 Stainless Steel - ASTM A313
- 631 Stainless Steel (17-7 PH), ASTM A313
Stem Material
- Brass, ASTM B16
Temperature Range
- -195° to 177° C (-320° to 350° F)
Tolerance
- Set Pressure: ± 5 % on Increasing Pressure
