1. Versatile Thermocouple: Features a length of 600mm and an M8x1 headboard, designed for lowpressure control valves. Rated for up to 50,000 BTU, this thermocouple sensor ensures precise temperature control for your patio heater. 2. Low Operating Pressure: Designed to operate at a maximum of 65 mbar, with a 3/8' male thread for hassle installation. This lowpressure design enhances the safety and efficiency of your outdoor heater. 3. Compatible Design: Includes a 40mm diameter flat black Bakelite knob and a 'D' connector, suitable for valve shafts from 6.06.1mm. This compatibility ensures a fit for a variety of patio heater models. 4. Convenient Installation: Comes with a 900mm copper inlet pipe, simplifying the installation process. The valve stem measures 1155030mm, with 5/818UNF (3/8' flare) inlet and outlet threads for easy setup.