What is the difference between hard seal gate valve and soft seal gate valve
Hard sealed gate valves and soft sealed gate valves are two common sealing structures for gate valves, and they have some differences in sealing performance, applicable environment, and other aspects. 1、 Sealing performance: Hard sealed gate valves use metal to metal seals, which have good sealing performance and can achieve zero leakage. Soft sealed gate valves use plastic materials as seals, although their sealing performance is poor, they can meet certain leakage requirements. 2、 Applicable temperature: Hard sealed gate valves are suitable for harsh environments such as high temperature, high pressure, and corrosion, and can withstand high temperatures and pressures. Soft sealed gate valves are suitable for low temperatures, generally not exceeding 80 ℃. 3、 Maintenance and upkeep: Hard sealed gate valves, due to their metal sealing structure, have high friction between the sealing surfaces and are prone to wear, requiring regular maintenance. Soft sealed gate valves, on ...