Check valve pressure test method Test status: Lift check valve axis in the horizontal position and vertical; swing check valve and valve channel axis approximately parallel to the axis in the horizontal position. Strength test, the test medium is introduced from the inlet end to a predetermined value, and the other end closed, body and bonnet look no leakage in compliance. Tightness test from the outlet end of the introduction of the test medium Shanghai Guanlong valve Machinery Co., inspect the sealing surface of the Guangzhou Kaiheng Valve Co., packing and gaskets at the inlet end no leakage in compliance. Seal ring body with content 25% Carbon (carbon) material of CPTFE Taiwan Toyama Valve Co., guarantee completely leak (0%). Buried welded ball valve can be directly buried in Huizhou, do not build high large valve well, just set up a small shallow in the ground, saving construction costs and engineering time. According to pipeline construction and design requirements, adjust the height of the valve body and stem length. The precision ball very precise, easy operation, no adverse interference. Use of advanced materials, energy security than PN25 pressure. Tianjin Tanggu valve limited liability company | Ming Kong valve (Online) | Huizhou valve by valve, the Hong Kong Science and Technology Co., Ltd. of Dongguan. Valve Co., Ltd., Dongguan Ming Kong (www.gdmgfm.com) is Dongguan, butterfly leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Ming Kong valve leadership with the staff warmly welcome all inquiries negotiations to create a better valve out of Hong Kong in the future.