Low Wking Pressure Max 1 or 2 PSI(65mbar), CEand tested Main Control Valve In and Out with 3 or 8inch Male Flare thread Length of Thermocoupler 600mm Head Tip M8x1 (This is Low pressure control valve max rating BTU 50000) Platic Black Bakelite Knob Diameter 38mm "D" Insert f Valve 6.0-6.1mm Suitable f Low Pressure Repair Control System f Grill, Fire Pit, Fireplace and Heater (max BTU rating: 50000 wking pressure 65mbar) Keep The Thermocoupler to be Heated Push the Valve around 5-10s Then Release H (if Flame stops, Ajust the location of Thermocouple tip) Specification parameters: Air thread: 5 or 8-18UNF (3 or 8inch Flare) Valve shaft size: 6.1mm Adapter knob: 6.0-6.1mm ce Thermocouple: M8x1 Length 600mm Complete accessies f ovens, heaters, furnaces other gas appliances Material: Metal colour: As shown Package Contents: 1 x Propane Gas Fireplace Safety Control Valve Kit Only the above package content, other products are not included. Note: Light reflection different displays may cause the col of the item in the picture a little different from the real thing. The measurement allowed err is 1-3cm.