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SKU CRV-25-1/2
Generant
1/2" MNPT Generant Cryogenic Relief Valve - 25PSI -196°C to 176°C
in Valves
$65.00
In stockGenerant brass cryogenic relief valve, 1/2 in MNPT, set at 25 PSI with a −196 °C to 176 °C range and the Dirt Guard seat feature.
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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. 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. The Generant Cryogenic Relief Valve has a 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)
FEATURES
• Available CE marked in accordance to the requirements of the PED
• Exclusive “Dirt Guard” poppet incorporates screen to extend valve and reliability
• High Flow Capacity and Excellent Reseat Performance
• Supplied Factory Preset Set and Permanently Locked for Tamper Proof Service
• Discharge to Atmosphere or a Wide Varity 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
Cryogenic Relief Valve (CRV) Technical Data
Nominal Set Pressure
25 Psig (0.7 to 51.7 Bar)
Factory Set Tolerance**tolerance specifications per
EN ISO 4126-1
Set Pressure ≤ 28.90 Psig, ± 5%
Set Pressure 29.00 – 48.30 PSI, ± 1.45 Psig
Set Pressure ≥ 48.40 Psig, ± 3%
Zero Leakage to
95% of Set Pressure
Full Rated Flow @ 110% of Set Pressure
Unaffected by up to 10% Back Pressure
Materials of Construction
Brass Body Construction
Reseat
90% of set pressure
85% for PCTFE seal set below
100 Psig (6.9 Bar)
Temperature Rating
-320º to 350ºF (-196ºC to 176ºC) based on seal material
Lubricant: Krytox®
Frequently asked questions
What is the set pressure and temperature range?+
25 PSI, over −196 °C to 176 °C.
What is the connection?+
1/2 in MNPT.
What does the Dirt Guard feature do?+
Generant describe it as their exclusive feature that increases the valve's tolerance of contamination. Part number CRV-25-1/2.
Related products
1/4" MNPT Generant Cryogenic Relief Valve - 10PSI, 22PSI, 35PSI, 50 PSI, 100PSI, 150PSI, 200PSI, 250PSI -196°C to 176°C
Generant cryogenic relief valve with a 1/4″ MNPT connection, listed for service from -196 °C to 176 °C. Eight pressure ratings are stocked – 10, 22, 35, 50, 100, 150, 200 and 250 PSI – each supplied as a separate variant. Relief valves on cryogenic vessels and transfer lines vent the pressure rise produced when trapped liquid boils off to gas, so the rating has to be matched to the equipment being protected rather than chosen for convenience.
