Leak-proof stem structure, bottom stem has a PTFE seal and a self-sealing O-ring, there are two O-ring above, consisting of two PTFE gasket to ensure no leakage. The same material as the body material and pipe stress does not appear uneven, it will not because of the earthquake and ground vehicles and sometimes through extrusion. Body is light and easy to heat. Buried valve can be directly buried in the ground, Guangzhou Kaiheng Valve Co., do not build tall valve well, Shanghai and Shanghai Valve Manufacturing Co., just set up a small shallow wells on the ground, saving construction costs and engineering time. What has damaged the surface of the stainless steel valves stainless steel valves film adhesion to the surface organic juice, in the case of water oxygen conditions, valves, constitute organic acids, acids long is the corrosion of the metal surface. Stainless steel valves surface adhesion containing acid, alkali, salts, can cause localized corrosion. In the air pollution (such as those containing sulfides, carbon dioxide, nitrogen oxide atmosphere), Shanghai Guanlong valve Machinery Co., case of condensation water to form sulfuric acid, nitric acid, acetic acid solution point, ... Suzhou Watts Valves Ltd. | valves | valve provided by the Dongguan Ming Kong, the Hong Kong Science and Technology Co., Ltd. valve. Valve Co., Ltd., Dongguan Ming Kong (www.gdmgfm.com) strong, credible, butterfly and other industries in Dongguan, Guangdong has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead valve and you work out of Hong Kong into the brilliant, for a better future!