Gas Patio Heater Control Valve Thermocouple Sensor Dump Switch Knob Propane LPG Fire Pit Control Compatible with propane gas heaters featuring thermoelectric safety systems. Suitable for use with outdoor propane patio heaters, standing patio heaters, tower glass tube heaters, table propane heaters, and Hampton Bay patio heaters. Not suitable for natural gas heaters. Inlet thread: Female M10*1 (0.394 inch) Outlet thread: 7/16 inch-24UNF (0.429 inch) Valve designed for low pressure only Equipped with 8mm spindle shaft and Bakelite D-shaft knob made of ABS material for durability Thermocouple constructed with solid brass and high temperature protective cover Thermocouple wire length: 350mm Pilot burner connection thread: M8*1 Includes FD4 weak current tilt dump switch, R ≤ 10 mΩ Control valve and thermocouple made of high quality brass for long-lasting performance Wide compatibility with various propane-powered heating appliances Note: 1. Verify that your heating equipment’s interface matches this product before purchase, as interfaces may vary by model. 2. Ensure correct mounting position during installation. 3. Confirm proper connection between the thermocouple and dump switch or valve. 4. After turning on the gas, press and hold the valve for 5–10 seconds to allow the thermocouple probe to heat up properly. Releasing the knob too early may cause the gas valve to close. Color: As shown in photo Material: Brass, plastic Size: 11.5 cm Package includes: 1 x Heater control valve 1 x Thermocouple Product does not include any additional items shown in images Note: Lighting and display settings may cause slight color variations between the image and actual item. Measurement tolerance: ±1–3 cm