[COMPATIBLE]: Inlet thread: M10 x 1 (0.394 inch), Outlet thread: 7/16 inch-24UNF (0.429 inch), Gas valve with 8mm stem, Pilot burner connection thread: M8 x 1 (valve is only for low pressure). Control valve and thermal coupler Suitable for propane gas heaters with thermoelectric safety, works with outdoor propane patio heater, freestanding patio heater, propane table heater, Bay window heater; Not suitable for use with natural gas heaters; Propane gas valves are made of high quality brass with heavy duty construction for safety and durability. Inlet Thread: M10 x 1 (0.394 inch) Outlet Thread: 7/16 inch-24UNF (0.429 inch) Thermocouple with high quality brass material and high temperature protection cover. of thermocouple total 350mm Pilot burner connection thread: M8 x 1 (the valve is only for low pressure). Bakelite knob D rod 8mm, using ABS material, solid structure, . FD4 Low Current Rocker Relief Switch Gas R less than 10mΩ Patio Heater Wide Range of Compatibility Propane gas