Flameout Valve with Inlet and Outlet with Flare 5/8-18UNF Thread Only suitable for low pressure applications (Max BTU Rating: 50000) Suitable for gas grill, heater, fire pit, fireplace if the same connections Specifications: 600mm thermocouple with M8 x 1 threaded head Bakelite knob OD 38mm, D 6.1mm Operating Instructions 1. Fix the valve on a plate or board of your grill or fire pit with the cap screw and flange. 2. Connect your inlet and outlet pipe on the inlet and outlet side. (fix it sufficiently in case of gas leakage) 3. Tightly fix the M8 thermocouple nut on the valve end (check if your valve end thread is 8mm before purchasing) 4. Connect the thermocouple and terminate it well 5. Open the gas with the correct size knob and push your valve about 5-10 seconds until the thermocouple head is heated enough. 6. Release your hand and it works properly If when you release your hand, the gas valve closes again, please check If your thermocouple is still heated by the flame If the end