With the use of different requirements Shandong A27H inching valve springs, there is a closed and not enclosed. Closed discharge medium that is not compromised Weifang valve discharge all along export regulations, and are generally used for toxic and corrosive media. Enclosed are not generally used for non-toxic or non-corrosive media. Valve Co., Ltd. Shandong Everbright valve manufacturer specializing in the production, welcome new and old customers to order our products! Safety valve according to the working temperature is generally divided 1. room temperature relief valve is installed only on the temperature in heating, air conditioning or water system's safety valve 110 ℃. 2. High temperature relief valve is a safety valve means specifically used in the solar system and the mold temperature of 180 ℃ temperature systems. Valve Co., Ltd. Shandong Everbright valve manufacturer specializing in the production, welcome new and old customers to order our products! Safety valve, the valve model Everbright, Ltd. Shandong A27H safety valve provided by Shandong Everbright valve. Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) strong, credible, Shandong Weifang ball industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Everbright valve into the brilliant and you work for a better future!