The Kunkle 137B Safety Relief Valve provides reliable overpressure protection with a 3/4 in inlet and 1 in outlet, preset at 150 psi. Rated for up to 2.6 million BTU, this model delivers substantial relief capacity for systems requiring significant pressure safety. Model 137B is designed to automatically vent when the set point is exceeded, helping safeguard equipment and personnel in pressurized installations.
