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 combination of several driving mode Guilin Valve Plant, 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 DN≥1400mm GB / T12234-2007 universal valve flange and butt weld steel gate valves GB / T12235-2007 General valves Flanged steel globe valves and lift stop return valve GB / T12236-2008 General valve steel swing check valves GB / T12237-2007 universal valve flange and welded steel ball valves GB / T12238-2008 common valve flange and wafer butterfly GB / T12239 -2008 Universal Valve Diaphragm GB / T12240-2008 General valve Iron Plug GB / T12241-2005 valve general requirements GB / T12243-2005 Spring loaded safety valves Guilin and Shanghai Valve Valve Factory | valve out of Hong Kong (Certified ) | Jiangxi 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.