Usage Tips:[COMPATIBLE]: Inlet Thread: Female M10*1 (0.394inch), Outlet Thread: 7/16inch-24UNF Thread (0.429inch ), Turn-ON Gas valve with 8mm Spindle Shaft, Pilot Burner Connection Thread: M8*1 ( The valve is for low pressure only). Control Valve and Thermo Coupler Suitable for Propane gas heaters with Thermoelectric Safety, Work with outdoor propane patio heater, standing patio heater, tower glass tube heaters, table propane heater, Hampton bay patio heater. Not suitable for use with Natural Gas heaters.Propane Gas valves are made of brass with heavy duty construction for safety and durabilityInlet Thread: Female M10*1 (0.394inch)Outlet Thread: 7/16inch-24UNF Thread (0.429inch )Thermocouple with solid brass material and high temperature protective cover.Thermocouple wire total 350mmPilot Burner Connection Thread: M8*1 ( The valve is for low pressure only).Bakelite knob D shaft 8mm, using ABS material, solid structure, durable.FD4 weak current tilt dump switch gas R less than equal 10 mPatio HeatersWide range of compatibilityThis propane gas control safety valve kit is made of brass material for durability.NOTE:1. Please check whether the interface of your heating equipment matches our product before you buy, because the product is not universal, heating equipment has different models of interfaces.2. When installing, please make sure the mounting position of each part is accurate3. Make sure the thermocouple is well connected to the dump switch or valve.4. If you loosen the knob, the gas valve closes again. Please check that your thermocouple is always heating on the flame. Turn on the gas and push the valve for 5-10 seconds until the thermocouple probe is heated.Colour:Photo ColorMaterial:brass, plasticSize:11.5cmPackage Contents:1 x Heaters Control Valve1 x Thermo CouplerOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.