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Add the VRV Series Vent Relief Valve to your store or catalog  
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Generant Vent Relief Valve, VRV Series

VRV Series Vent Relief Valve

Brand: Generant Inc
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Generant Vent Relief Valve, VRV Series
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 in brass, aluminum and 316 stainless steel. 

Valves feature a Quad ring seal which provides for extreme accuracy and repeatability with a narrow reseal band. Optional deflector cap increases flow capacity and provides for deflection of discharge.
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: > 500 (kPa: 3,400, bar: 34) - VRVI Series

Enclosure, Body Material

  • 316 Stainless Steel
  • Aluminum
  • Brass
  • Nickel

Flow Rate

  • 10.3 to 20,000 scfh - VRVD Series
  • 7.7 to 4,000 scfh - VRVI Series
  • 7.7 to 5,500 scfh - VRV Series

Materials of Construction

  • Spring Retainer, Deflector Cap & Rivet: 2024 Aluminum, ASTM B211 (Clear Anodized, ASTM B580)
  • Spring Retainer: 316 Stainless Steel - ASTM A479
  • Spring Retainer: Brass, ASTM B16

NPT Connection

  • 1" NPT Male
  • 1/2" NPT Female
  • 1/2" NPT Male
  • 1/4" NPT Female
  • 1/4" NPT Male
  • 1/8" NPT Male
  • 3/4" NPT Female
  • 3/4" NPT Male
  • 3/8" NPT Female
  • 3/8" NPT Male

Nut & Bolt Material

  • Locknut: 300 Series Stainless Steel (18-8)

Pressure Range

  • psig: 0.5 to 150 (kPa: 3 to 1,034, bar: 0.03 to 10.34)

Proof Pressure

  • psig: 400 (kPa: 2,800, bar: 28) - VRVI Series

Seat / Seal Material

  • Seal: Buna-N
  • Seal: Ethylenepropylene
  • Seal: Fluorosilicone
  • Seal: Neoprene
  • Seal: Silicone
  • Seal: Teflon
  • Seal: Viton

Spring Material

  • 302 Stainless Steel - ASTM A313
  • 631 Stainless Steel (17-7 PH), ASTM A313

Stem Material

  • 2024 Aluminum, ASTM B211 (Clear Anodized, ASTM B580)
  • Brass, ASTM B16

Temperature Range

  • -195° to 205° C (-320° to 400° F)

Tolerance

  • Set Pressure (psig: < 2 (kPa: 14, bar: 0.14): ± 10 %
  • Set Pressure [psig: 2 to 150 (kPa: 14 to 1,030, bar: 0.14 to 10.3)]: ± 5 % (On Increasing Pressure)

Documentation

Data Sheets

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