Pressure Test Method for various kinds of industrial valves including pneumatic valves as follows: 1. strength test valve pneumatic valve pressure test method shall be carried out at the ball half open. ① floating ball valve tightness test: The valve is partially open, one end of the introduction of the test medium and the other end closed; open the closed end of the examination several times when the ball is rotated, the valve is closed, at the same time check the packing and gasket sealing performance, You may not have leakage. Then introduced into the test medium from the other end, the test is repeated. ② fixed ball valve tightness test: Before the test the load rotate the ball several times, fixed ball valve is in the closed state, the introduction to the specified value from the end of the test medium; lead-sealing pressure gauge check, use a pressure gauge precision 0 .5 ~ 1, the range is 1.5 times the test pressure. Q within the prescribed time, there is no step-down phenomenon qualified; reintroduction test media from the other side and repeat the test. Then, the valve is partially open, Shanghai Guanlong valve Machinery Co., closed at both ends, the cavity filled with media, Guangzhou Kaiheng Valve Co., check packing and gasket at the test pressure, without leakage. Clamp butterfly valve Features 1, efficient groove clamp contact and take the appropriate placement of pipe fittings, do not want to start the welding, unnecessary secondary zinc, secondary placement. Increase the placement rate. 2, light weight portable clamp contact, less the number of bolts, easy placement, unnecessary extra skills. 3, reliable scientific and rational planning the organ, unique C-type rubber seals to achieve triple seal, guarantee the bond seal reliability. 4, safe contact with the trench and the corresponding clamp tube placement start, just mechanical assembly, Taiwan Toyama Valve Co., Ltd., no welding, no fire, valves, therefore, no slag cloudy pipeline to ensure site safety, Under fire ban to commence case conditions, it is particularly appropriate. Tianjin Tanggu valve limited liability company, the Hong Kong valves (online consultation), the valve provided by the Dongguan Science and Technology Co., Ltd., the Hong Kong valve. 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.