Suitable for Low Pressure Repair Control System for Grill, Fire Pit, Fireplace & Heater (max BTU rating 50000 working pressure 65mbar) The gas fire pit valve control assembly kit is suitable for most low pressure system without pilot burner for outdoor fire pit or fireplaces. Max Rating BTU is 50000. The valve is a flame failure valve and have to work with thermocouple together. Operation Instructions 1). Fix the valve on a plate or board of your grill or fire pit by the head screw and flange. 2). Connect your inlet and outlet hose on inlet and outlet side. (faston it tightly enough in case of gas leakage) 3). Faston the thermocouple nut M*8 on the valve end tightly 4). Connect thermocouple and end thread well 5). Open gas by correct size knob and push your valve around 5-10s till the thermocouple head is heated enough. 6). Release your hand and it work properly If when you release hand, gas valve shut off again, Please check a. If your thermocouple is always be heated on flame b. If the thermocouple end is well connect with valve c. If the inlet and outlet side well connect with hose you have Low Pressure Max 65mbar (1/2PSI) safety valve Gas Valve with Inlet & Outlet 3/8" Male Flare Thread Bakelite Knob High Temperature Resistance 120C Common Parts for a Fire Pit 24" Thermocoupler 3/8" Male Flare Valve Key Control Valve Gas Valve with Fixing Bracket Pilot Burner Assembly Kit fire pit parts Thermocouple low pressure safety valve key valve 1/2" safety flame failure valve with bracket Pilot burner assembly