Crissair relief valves are used for system functionality, thermal expansion, or system over pressurization. Crissair has the capability of designing relief valves to meet specific customer requirements. Crissair’s wide variety of relief valves are suitable for air and all aircraft hydraulic fluid types. These valves are manufactured from aluminum, stainless steel, and titanium materials with pressures ranging from 0.2 to 5000 PSI.

• Inline
• Cartridge
• Filtered
• Thread-In
• Drop-In
• Hard Seat
• Soft Seat
• Self-Retained Micro-Hydraulic (7 Series)
• Rosan Style