Kunkle Safety Relief Valves Model 537


About Kunkle: Kunkle Valve is a leading manufacturer of quality safety and relief valve products for industrial and commercial applications, including steam, air, liquid, cryogenics and non-hazardous gases.

Kunkle safety and relief valve products range in size from 1/4-inch NPT through 6-inch flange and are suitable for services ranging from cryogenic to 850° F at set pressures ranging from vacuum to 6,500 psig. They are available in a wide range of materials including Brass, Bronze, Carbon Steel, Stainless Steel, Cast Iron, and Aluminum.

Products are available for ASME Section I, Section IV and Section VIII services with relief capacities certified by the National Board. In addition, They offer a range of non-code products and each valve, both code and non-code is set, tested, and retested to the customer’s specifications and then sealed at the factory to prevent tampering.

Applications Hot water boiler, heat exchangers and generators.
Pressure & Temp. Limits 15 to 160 psig
-20° F to 250 ° F

Benefits & Features
Extra heavy construction helps provide long life.
Top guided disc assembly incorporates resilient seal in seating area.
An isolating diaphragm protects working parts from corrosion caused by discharged liquid.
Pivot between disc and spring designed to correct for misalignment and compensates for spring side thrust.
These safety relief valves serve the dual purpose of relieving (1) overpressure created by thermal expansion under normal “on” and “off” firing conditions, and (2) overpressure in the form of water or steam created in over-firing due to failure of electrical or other controls.
Each Kunkle valve is tested and inspected for pressure setting and leakage.