Brass Auto Exhaust Valve for Solar Water Heater Systems Key benefits Maintains heat transfer by automatically venting trapped air, preventing efficiency loss during normal operation. Durable temperature brass construction resists corrosion and withstands routine thermal cycling for longlasting performance. Easy to install thanks to precise threaded connections and standard solar diaphragm mechanism included. Material and design temperature brass body for corrosion resistance and stable sealing. Robust enough to endure repeated heating and cooling cycles without rusting or degradation. Compatibility and size Precision threaded connection designed for solar water heating setups with UK thread standards. Available in three male thread sizes: 1/2 inch, 3/4 inch, and 1 inch. Compatible with common solar installation fittings and straightforward to integrate with existing systems. Includes a diaphragm mechanism to ensure reliable automatic operation. Automatic operation and protection Diaphragm mechanism provides automatic venting of air without manual pressure regulation or intervention. Continuous air release helps prevent air locks, supporting consistent heating performance and reducing potential component stress or damage. What's included Valve with diaphragm mechanism for automatic operation Three sizing options for compatibility with common UK threaded fittings 23 practical use scenarios Residential solar water heating system: install at the point in the circuit to automatically vent trapped air, maintaining efficient heat transfer throughout daily thermal cycles. Small commercial solar thermal system: use across multiple units where consistent autoventing is required to sustain performance during frequent thermal cycling. Replacement valve in existing solar loops: upgrade aging or corroded vents to improve reliability, prevent air buildup, and restore efficient operation. Performance highlights Function: automatic air release to preserve heat transfer efficiency Compatibility: UKthreaded valves with 1/2', 3/4', and 1' male options Size: three standard thread sizes for flexible installation Material: corrosionresistant temperature brass Reliability: diaphragmbased automatic mechanism for hands operation and system protection