Generant manufactures an extensive product offering of pressure relief valves including low pressure/high accuracy and high pressure/ high flow designs.

Product Lineup

Vent Relief Valve (VRV)

Generant Vent Relief Valve (VRV)

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.

  • Accurate and Repeatable Cracking Pressure
  • 100% Factory Preset and Tested
  • Zero Leakage to 95 – 98% of Set Pressure
  • Tamper Proof Adjustment
  • Excellent Reseat Performance
  • Compact Size

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Absolute Pressure Relief Valve (APRV)

Generant Absolute Pressure Relief Valve (APRV)

The Generant Series APRV, Absolute Pressure Relief Valve, is a spring reference over pressure protection device for applications requiring constant set pressure independent of changes in ambient pressure (altitude). The valve was developed primarily for use with liquid helium dewars and the valve has been extensively tested to verify that the valve can withstand the extreme cold environment (FS Seals). Valves come factory preset with set pressures ranging from 15.0 to 24.0 PSIA (1.02 to 1.65 Bar). Relief pressure can be discharged to atmosphere or to a downstream connection.

  • 1/4″ NPT, Dual Ferrule Tube
  • 15.0 – 24.0 PSIA (1.02 – 1.65 Bar)
  • Supplied Factory Preset
  • 100% Factory Tested for Leakage, Crack and Reseat Performance
  • Minimal Set Pressure Drift due to change in ambient pressure
  • Qualified for Extreme Low Temperature applications
  • High Flow Capacity and Excellent Reseat Performance
  • Discharge to Atmosphere or Inline Piping Configurations

For more information about this product…
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Vent Relief Valve High Pressure (VRVH)

Generant Vent Relief Valve High Pressure (VRVH)

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 in vent to atmosphere or inline configurations. Valves feature an encapsulated O-ring seal to prevent extrusion at higher differential pressures.

  • 1/8″ – 1/4″ NPT
  • Set Pressure Range 150 – 600 Psig
  • Accurate and Repeatable Cracking Pressure
  • 100% Factory Preset and Tested
  • Zero Leakage to 95 – 98% of Set Pressure
  • Tamper Proof Adjustment
  • Excellent Reseat Performance
  • Compact Size

For more information about this product…
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High Pressure Relief Valve (HPRV)

Generant High Pressure Relief Valve (HPRV)

The HPRV Series Relief Valve provides accurate crack pressure with zero leakage up to 98% of nominal set pressure. When properly specified, this factory preset, tamper proof design, is ideally suited for most any liquid or gas application. Encapsulating the o-ring seal within the poppet eliminates seal extrusion and cold flow characteristics. By guiding the poppet into the body, a line of contact seal is ensured and at high crack pressure settings, the o-ring is protected by a metal-to-metal stop between the poppet and the body. High flow design, combined with narrow band interchangeable springs, minimizes system pressure rise as flow demand increases. Available in brass or stainless steel and inline or discharge to atmosphere. Valves can be supplied with a manual pull ring override.

  • 1/8” – 3/4” NPT
  • Set Pressure Range 10 – 2400 Psig
  • 100% Factory Preset and Tested
  • Zero Leakage to 95 – 98% of Set Pressure
  • Tamper Proof Adjustment
  • Excellent Reseat Performance

For more information about this product…
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Industrial Relief Valve (IRV)

Generant Industrial Relief Valve (IRV)

The Generant Series Brass IRV, Industrial Relief Valve is a spring reference over pressure protection device. The valve can be ordered with set pressures ranging from 10 to 750 Psig (0.69 to 51.7 Bar) and comes factory preset and permanently locked. Relief pressure cannot be altered or adjusted in the field. Seat and poppet geometry combined with optimized spring ranges provide high flow rates with minimum pressure accumulation. Relief pressure can be discharged to atmosphere or to a downstream connection. For severe service applications and set pressures above 50 Psig (3.45 Bar), specify optional PTFE seals.

  • 1/4″ – 1/2″ NPT
  • Set Pressure Range 10 – 750 Psig (0.69 – 51.7 Bar)
  • Supplied Factory Preset Set and Permanently Locked for Tamper Proof Service
  • 100% Factory Tested for Leakage, Crack and Reseat Performance
  • High Flow Capacity and Excellent Reseat Performance
  • Discharge to Atmosphere or Inline Piping Configurations
  • Optional Deflector Cap available for Diverting Exhausted Gas to Atmosphere
  • Available Cleaned and Packaged for Oxygen Service

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Liquid Cylinder Valve (LCV)

Generant Liquid Cylinder Valve (LCV)

The Series LCV Liquid Cylinder Pressure Control/Relief Valve is designed exclusively for use on DOT 4L Cryogenic Liquid Cylinders. The LCV dramatically reduces the noise associated with traditional cylinder relief device discharge. Under normal operating conditions, the LCV optimizes cylinder performance by venting only what is required to maintain cylinder pressure in a tight band. In the event that circumstances demand, the LCV has adequate flow capacity to insure safety, meeting all industry and regulatory requirements.

  • 1/4” NPT
  • Set Pressure Range 22 – 500 Psig (1.5 – 34.5 Bar)
  • Designed exclusively for use on DOT 4L Liquid Cylinders
  • Eliminates disruptive “pop” historically associated with traditional cylinder relief devices
  • Incorporates the customer proven “Dirt Guard” poppet
  • Accurately maintains and controls cylinder pressure minimizing product loss
  • Exceeds industry and regulatory flow capacity requirements
  • Complies with OSHA sound level regulations
  • Extensively field qualified
  • OEM approved and endorsed
  • Cleaned and packaged for Oxygen service standard

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Cryogenic Relief Valve (CRV)

Generant Cryogenic Relief Valve (CRV)

The Generant Series Brass CRV, Cryogenic Relief Valve is a spring reference over pressure protection device. The CRV incorporates Generant’s exclusive “Dirt Guard” feature which increases the valves ability to tolerate particulate contamination. This device is ideally suited for use as a “Blocked Line Safety” in cryogenic systems. The CRV is supplied cleaned and packaged for oxygen service. The valve can be ordered with set pressures ranging from 10 to 750 Psig (0.7 to 51.7 Bar) and come factory preset and permanently locked. Relief pressure can not be altered or adjusted in the field. Seat and poppet geometry combined with optimized spring ranges provide high flow rates with minimum pressure accumulation. Compact design and availability of a variety of inlet and outlet configurations reduces size and piping requirements. Relief pressure can be discharged to atmosphere or to a downstream connection. The CRV is supplied with Flourosilicone seals for set pressures from 10 – 49 Psig (0.7 – 3.4 Bar) and PCTFE seals for set pressures greater then 50 – 750 Psig (3.5 – 51.7 Bar)

  • 1/4″, 3/8” and 1/2″ NPT
  • Set Pressure Range 10 – 750 Psig (0.7 – 51.7 Bar)
  • Available CE marked in accordance to the requirements of the PED
  • Exclusive “Dirt Guard” poppet: Incorporates a poppet screen to extend valve life and ensure reliability
  • High Flow Capacity and Excellent Reseat Performance
  • Supplied Factory Preset and Permanently Locked for Tamper Proof Service
  • Discharge to Atmosphere or a Wide Variety of Inlet and Outlet Piping Configurations
  • Optional Deflector Cap available for diverting exhausted gas
  • 100% Factory Tested for Leakage, Crack and Reseat performance
  • Cleaned and Packaged for Oxygen Service

For more information about this product…
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 Download a Catalog