Description

Generant Series Brass CRV Cryogenic Relief Valve | USA Lab

The Generant Series Brass CRV Cryogenic Relief Valve is a spring reference over-pressure protection device designed for cryogenic systems, blocked line safety, and demanding gas service applications. Its compact brass construction and factory preset relief pressure provide reliable pressure protection where field adjustment is not permitted.

The CRV incorporates Generant’s exclusive Dirt Guard feature, which helps improve tolerance to particulate contamination and supports long-term valve reliability. Seat and poppet geometry combined with optimized spring ranges provide high flow capacity with minimum pressure accumulation and excellent reseat performance.

Each Generant Series Brass CRV Cryogenic Relief Valve is 100% factory tested for leakage, crack, and reseal performance, then cleaned and packaged for oxygen service. Depending on the selected configuration, discharge can be routed to atmosphere or to a downstream connection.

Cryogenic Relief Valve Factory Preset Oxygen Service Cleaned Brass Construction

Set Pressure: 10–750 PSIG — factory preset and non-adjustable for controlled pressure protection.

Temperature Range: -320°F to 350°F — based on the selected seal material.

Oxygen Service: Cleaned and packaged — supports applications requiring oxygen-service preparation.

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Why this Generant Series Brass CRV Cryogenic Relief Valve?

Cryogenic system protection — designed for over-pressure protection and blocked line safety in cryogenic piping and equipment.
Dirt Guard reliability — the exclusive Dirt Guard feature helps the valve tolerate particulate contamination.
Factory preset safety — supplied with a preset relief pressure that cannot be altered or adjusted in the field.
High flow performance — seat, poppet, and spring geometry provide high flow capacity with minimum pressure accumulation.
Flexible discharge options — discharge can be routed to atmosphere or to a downstream connection depending on configuration.

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Technical Specifications

Specification	Details
Model	Generant Series Brass CRV Cryogenic Relief Valve
Product Name	Generant Series Brass CRV Cryogenic Relief Valve
Valve Type	Spring Reference Over-Pressure Protection Device
Service	Cryogenic Systems, Blocked Line Safety, and Gas Service
Set Pressure Range	10–750 PSIG (0.7–51.7 Bar)
Pressure Adjustment	Factory Preset and Not Adjustable
Factory Set Tolerance	≤ 28.90 PSIG: ±5%; 29.00–48.30 PSIG: ±1.45 PSIG; ≥ 48.40 PSIG: ±3%
Zero Leakage	To 95% of Set Pressure
Full Rated Flow	At 110% of Set Pressure
Back Pressure	Unaffected by Up to 10% Back Pressure
Material of Construction	Brass Body Construction
Reseat	90% of Set Pressure; 85% for PCTFE Seal Set Below 100 PSIG (6.9 Bar)
Temperature Rating	-320°F to 350°F (-196°C to 176°C), Based on Seal Material
Seal Material	Fluorosilicone for 10–49 PSIG; PCTFE for 50–750 PSIG
Lubricant	Krytox®
Testing	100% Factory Tested for Leakage, Crack, and Reseal Performance
Oxygen Service	Cleaned and Packaged for Oxygen Service
Dirt Guard	Exclusive Feature Designed to Improve Tolerance to Particulate Contamination
Compliance Option	Available CE Marked in Accordance with PED Requirements

Popular Industries & Use Cases

Cryogenic Systems Pharmaceutical Chemical Sciences Academic & Research

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FAQ

What is the Generant Series Brass CRV Cryogenic Relief Valve used for?

The Generant Series Brass CRV Cryogenic Relief Valve is designed for over-pressure protection in cryogenic systems and is ideally suited for blocked line safety and demanding gas service applications.

Can the Generant Series Brass CRV Cryogenic Relief Valve be adjusted in the field?

No. The Generant Series Brass CRV Cryogenic Relief Valve is factory preset and permanently locked. The relief pressure cannot be altered or adjusted in the field.

Is the Generant Series Brass CRV Cryogenic Relief Valve cleaned for oxygen service?

Yes. The Generant Series Brass CRV Cryogenic Relief Valve is cleaned and packaged for oxygen service.

What seal materials are used in the Generant Series Brass CRV Cryogenic Relief Valve?

The Generant Series Brass CRV Cryogenic Relief Valve uses Fluorosilicone seals for 10–49 PSIG set pressures and PCTFE seals for 50–750 PSIG set pressures.

Important Shipping Notice!

DISCLAIMER:

All items are carefully packaged to ensure safe delivery. In the rare event that your item arrives damaged, please notify us within 3 days of receipt. We will promptly provide a replacement or issue a refund.

Please note that any damage occurring after delivery is not covered under warranty. We appreciate your understanding and your trust in our products.

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Warranty

Fittings and steel do NOT carry any warranty. Fittings and steel items with a defect or other issue must be identified within 30 days of arrival and USA Lab MUST be contacted. After 30 days, there will be no replacements sent for fittings or steel items with a defect or issue. Cross threading, misuse, improper storage, or improper care of fittings/steel are considered user error and are not covered under warranty.

Shipping & Returns

1–3 Business Days Standard Processing

Return Policy ↗ Varies by Product Warranty Policy ↗ Varies by Product

3 Days to Claim Inspect on Arrival

Shipping

Orders ship within 1–3 business days after payment clears. We ship Monday through Friday via UPS, USPS, and freight carriers.
Freight items (crated, hazmat, dropship, or special packaging) can take 1–5 business days to ship.
Expedited shipping speeds up transit, not processing. Contact us for true rush orders.
PO Box addresses ship USPS. Alcohols, chemicals, and hazmat cannot ship to a PO Box.

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Inspect every shipment on arrival. Claims must be filed within 3 business days.
Visible damage? Refuse the delivery and have the driver document it. We will file the claim and ship a replacement.
Concealed damage: contact us within 2 days with photos of the packaging and item. Keep all packing materials.
Freight services (liftgate, residential, inside delivery) are the customer's responsibility to select for their location.

Damage & Freight Details

Returns

USA Lab branded products are returnable within 30 days of order date with prior authorization. Email us before sending anything back.
Solvents, chemicals, and consumables are not returnable once shipped. Custom and made-to-order items are final sale.
Unused items in original packaging carry a 15% restocking fee. Defective items ship back on us.
Items showing any signs of use, wear, contamination, or modification are not eligible for return.
Glassware damage must be reported within 3 business days of delivery for replacement or refund.

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Custom & Made-to-Order Items

Customized and made-to-order products are final sale and not eligible for return under any circumstances.
This includes ductless fume hoods, configured tanks and reactors, and any item built to your specifications.
These products are manufactured specifically for your application. Confirm sizing, voltage, and configuration with our team before ordering.
Damage claim coverage still applies. Inspect on arrival and report issues within 3 business days.

Return Eligibility Details

Warranty

USA Lab products are covered against manufacturing defects for up to 3 years, depending on product line.
1 year: chillers, heaters, rotovaps, reactors, vacuum ovens, mixers, and most equipment. 2 years: UVP vacuum pumps. 3 years: scientific freeze dryers.
Wear items (glassware, gaskets, heating elements, sensors) and fittings/steel are not covered. Report defects within 30 days (3 days for glass).
Non–USA Lab brands are covered by their manufacturer's warranty. See the product's Warranty tab.

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International Orders

Import duties, taxes, VAT, and brokerage fees are not collected by USA Lab and are the receiver's responsibility.
Verify your country's customs charges and import restrictions before ordering.
Refused or unclaimed international shipments are refunded minus shipping and a 15% restocking fee.
International orders are generally non-returnable. Damaged items must be reported within 3 business days.

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Summaries above are provided for convenience. The full Policies & Warranty Info pages govern all orders and may be updated at any time.

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1/4" MNPT Generant Cryogenic Relief Valve - 10PSI, 22PSI, 35PSI, 50 PSI, 100PSI, 150PSI, 200PSI, 250PSI -196°C to 176°C

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