Cryogenic Relief Valve Brass (CRV)
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CRYOGENIC RELIEF VALVE (BRASS) 1/4", 3/8” and 1/2" NPT 10 - 750 Psig (0.7 - 51.7 Bar) Description 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 50 – 750 Psig (3.5 – 51.7 Bar). Available CE marked in accordance to the requirements of the PED 97/23/EC Exclusive “Dirt Guard” poppet incorporates screen to extend valve life and ensure reliability High Flow Capacity and Excellent Reseal Performance Supplied Factory Preset and Permanently Locked for Tamper Proof Service Discharge to Atmosphere or a Wide Variety of Inline Piping Configurations Optional Deflector Cap available for diverting exhausted gas 100% Factory Tested for Leakage, Crack and Reseal Cleaned and Packaged for Oxygen Service Technical Data Nominal Set Pressure Range: 10 – 750 Psig (0.7 to 51.7 Bar) Factory Set Tolerance*: Set Pressure ≥ 72.5 PSI, ± 3% Set Pressure < 72.5 PSI, ± 2.175 PSI *tolerance specifications per EN ISO 4126-1. Zero Leakage to 95% of Set Pressure Full Rated Flow @ 110% of Set Pressure Unaffected by up to 10% Back Pressure Reseat: 90% of set pressure 85% for PCTFE seals set below 100 Psig (6.9 Bar) Temperature Rating: -320º to 350º F (-196º C to 176º C) based on seal material (see How To Order) Lubricant: Krytox® Materials of Construction Component Body, Poppet, Adjusting Spring Retainer, Pipe-Away Adapters, Deflector Cap, Tamper Proof Ring Material Brass, ASTM B16 PCTFE (ASTM D1430), or Fluorosilicone Seal Color Coded Identification Label

CRYOGENIC RELIEF VALVE (BRASS) Flow Data Set Pressure Range (Psig) From Valve Orifice .250” (6.35mm) Diameter (same for 1/4", 3/8" and 1/2" NPT) *Flow Coefficient Kd is stated at 110% accumulation Relief Valve Flow Capacity can be calculated using Generant’s Online Flow Calculator at www.generant.com or contact Customer Service at 973-838-6500. CRV – 250B – K – 350 SERIES CRV -Cryogenic Relief Valve CRVP2 -Cryogenic Relief Valve with 1/4" Female Pipe-A-Way Adapter Installed CRVP3 -Cryogenic Relief Valve with 3/8" Female Pipe-A-Way Adapter Installed CRVP4 -Cryogenic Relief Valve with 1/2"...