By driving by driving classified into automatic valves, power-driven valves and manual valves driven by compressed air valves. Hydraulic valve: With oil liquid pressure driven valve. There are also more than a few combinations of Tianjin Tanggu valve drive system, such as gas - electric valve. Press the nominal diameter (1) small size valves: nominal diameter DN≤40mm valve. (2) in size valves: nominal diameter DN is 50 ~ 300mm valve. (3) large diameter valve: Nominal valve DN is 350 ~ 1200mm valve. (4) King size valves: nominal diameter of the valve by DN≥1400mm connection method (1) Threaded valve: with internal or external threads, and pipe thread connecting .. (2) Flanged valves: Guilin body with flange valve plant, connected to the pipe flanges. (3) welding connection valve: Body with welding groove connected to pipe welding. (4) clamp connection valve: Body with jaws, pipe clamp connection. (5) connected to the valve sleeve: the pipes are connected to the ferrule. (6) of the clip connection valve: bolts directly to the valve and two pipes connected together in the form of wear clip. Tanggu Valve Company, Jiangxi valve, the valve out of Hong Kong, the Hong Kong valve provided by the Dongguan Science and Technology Co., Ltd. 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!