Thermocouple wire total 350mm Pilot Burner Connection Thread: M8*1 ( The valve is for low pressure only). Bakelite knob D shaft 8mm, using ABS material, solid structure, . FD4 weak current tilt dump switch gas R less than equal 10 m Patio Heaters Wide range of compatibility This propane gas control valve kit is made of high quality 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 accurate 3. 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 Color Material:brass, plastic Size:11.5cm Package Contents: 1 x Heaters Control Valve 1 x Coupler Only 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.