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Relief Valves

Quality Relief Valves Suitable for All Aircraft Fluid Types

Crissair’s Relief Valves are qualified for system pressures from 0.2 to over 6000 PSI using materials including stainless steel, aluminum, and titanium. They are commonly used for system functionality, system over-pressurization, and thermal expansion. Crissair designs and manufactures several types of relief valves, from high-pressure and high-flow system relief valves to direct acting low-pressure relief valves. Our Relief Valves include:

  • Hard Seat
  • Soft Seat
  • Filtered
  • Rosan Style
  • Drop-In
  • Thread-In
  • Cartridge
  • Inline

The world-class line of high-pressure system relief valves offers an amazingly stable flow curve with low pressure drops from crack to full flow, and very tight internal leakage rates at reseat and below. Crissair also offers zero-leak relief valves that employ soft seat materials. If you have a specific valve requirement, contact us; we can design our relief valves specifically to fit our customer’s needs.

In a PDF format, view the corresponding section of our catalog at the following:

Relief Valves

The complete 2022 Product Catalog is easily downloadable to PC’s, smartphones, and tablets and is updated with newly qualified products that are safely in operation throughout the Aerospace & Defense, Industrial and Space Industries.

To download click here (114mb PDF File).

Get in touch with Crissair, Inc.

Discuss your specific needs with our office. Contact Crissair, Inc. for the support and help you need. Our office is located in Valencia, California. We make our designs in a 70,000 square foot state-of-the-art facility fully equipped with advanced machine centers and our high-pressure and flow test

facilities. Our products are augmented by our commitment to building first-time quality into every process.

Contact us today at (661) 367-3300.

Supported OEM’s include:

  • Gulfsteam G650
  • Joint Strike Fighter
  • Boeing 787 Dreamliner
  • Airbus