Parker RS "SR/SRH Series" Vapor Safety Relief Valves (108 variations)

The type SR and SRH Safety Relief Valves are designed and constructed in strict accordance to the requirements of ASME Boiler and Pressure Vessel Code and certified by the National Board of Boiler and Pressure Vessel Inspectors. Each valve is accurately set and sealed at the factory and bear the UV and NB symbols. Employing proven principles of design, these safety relief valves are highly reliable and dependable. Precision machined stainless steel internal parts and a PTFE seat disk help prevent sticking due to corrosion and assure valve opening at the set pressure long after installation.

Type SR1, SR2, SR3, SR4, SRH1, SRH2, SRH3; Inlet size 1/2" & 3/4" (13 mm & 20 mm).

For R22, R134A, R404A, R717, and other common refrigerants.

Product Features:

• SR series designed to meet ASHRAE 15 2001 requirements for new systems installations
• SRH series designed to meet ASHRAE 15 1994 (or earlier) system requirements
• Certified by the National Board of Boilers and Pressure Vessel Inspectors
• All Stainless Steel Internal Parts
• PTFE Seat
• Accurate and Dependable
• Pressure Settings 150 to 400 psi