Kunkle is a leading manufacturer of adjustable relief valves and safety relief valves used to protect water heaters, tanks and cylinders from high pressures and temperatures. These ASME- and ASTM-compliant Kunkle valves are used to control the flow of steam, liquid, and cryogenic and non-hazardous gases. Kunkle offers a wide range of 1/4 - 3 inch NPT safety relief valves in bronze, aluminium and stainless-steel. These are non-adjustable, factory preset and come sealed to prevent tampering. They are available in different inlet and outlet sizes on Raptor supplies, an authorised Kunkle valve distributor.