QUALITY MATERIALS: The boiler relief valve is made of high-quality brass, beautiful and exquisite craftsmanship, the diaphragm is made of heat-resistant and aging-resistant materials, and the swivel cover is made of impact-resistant plastic, which is rounded and smooth, and doesn't hurt your hands. GOOD SEALING PERFORMANCE: This diaphragm safety valve for closed water heaters is small, lightweight and easy to carry. Sanitary system safety valve has good sealing performance. Watts closed heating system diaphragm safety valve has stable performance and practicality. STURDY BOILER SAFETY VALVE: DN15 Safety valves are designed to relieve excessive pressure in a boiler system, the safety valve will automatically open to relieve pressure, preventing damage to the system and causing losses to ensure safe operation. Flexible for all types of boilers and applications. EASY TO INSTALL: Brass water/oil/gas safety valve is easy to install. Diaphragm type safety valve should be installed on the flow path near the lowest temperature point, the highest temperature point or the heat source according to the direction of arrow, it doesn't need to spend much time, easy to operate and easy to handle. GOOD SAFETY: This diaphragm safety valve for closed water heaters is small, lightweight and easy to carry. The boiler safety relief valve is smooth, will not hurt your hands, and has good safety. The safety valve is strictly made of brass material, with thick inner wall, high strength, very durable and corrosion-resistant RELIABLE SAFETY VALVE: 1*DN15 Safety Valve, Connection: Threaded, Construction Mode: Spring, Application: Water, Size: G1/2‘’, Pressure G1/2‘’, Pressure: 6bar, Thread Type: G Thread, Durable and reliable, we believe that the male threaded safety valve can make your life more comfortable., Weight: 0.220462262 Pounds, Manufacturer: Regun