SPECIAL DESIGNThe steam and water separation tray is designed with special structure to ensure that the water will not be discharged during exhaust. This valve features high temperature resistance, rust protection, reliably sealing. It is convenient to demount and maintenance, while the water in the system will not flow out, so there is no need to empty the system FEATURESThis valve features high temperature resistance, rust protection, preservative, reliably sealing. G1/2' DN15 Brass Safety Air Pressure Relief Valve 8 Bar Noinal Pressure for Solar Water Heaters Syste - Thread Safety Valve, Thread Safety Relief Valve Solar Water Heater Air Vent Buy TAODAN Automatic Air Vent G1/2 Brass DN15 Air Release Valve Solar Water Heater Pressure Relief Valve For Hvac System Radiator Air Vent Bleed Valve SAFE AND RELIABLEIt is convenient to demount and maintenance, while the water in the system will not out, so there is no need to empty the system. Thread size: DN15 G1/2. As long as the system has pressure, the exhaust valve will continue to vent. 1 x Brass Automatic Air Vent valve. This valve features high temperature resistance, rust protection, reliably sealing EXQUISITE CRAFTThe exhaust mechanism is very and is cast from high-precision components MAIN FUNCTIONRemove excess air during the of the exhaust system and hvac system