Dedicated manual gas valve, WSD4F dedicated manual gas valve WSD4F-Q mine dedicated butterfly Gassy Coal Mine Methane has a new gas drainage and gas power plants, in the design of the building in the past, mostly using conventional valves, such as valve, hard seal or soft sealing butterfly valve. Easy and hard sealing butterfly valve collision sparks when the switch valve, poor castings and corrosion resistance of ordinary rubber seals, valve switching castings and rubber friction is easy to produce static electricity. Because gas utilization is an emerging industry, special valves currently on the market there is not a feature designed for gas, can not meet the requirements for long-term safe operation of the gas under high explosive and highly corrosive media, to bring gas utilization insecurity. WSD4F-Q dedicated gas valve, the valve is based on many years of experience in the production characteristics and gas company, to develop a new, anti-static, anti-corrosive special gas valve, the country has a number of large mining groups and dozens of gas power plants Application of gas drainage systems, safe, reliable, highly acclaimed. This product has been patented. Note: WSD4F-Q dedicated gas valve has two pressure levels: 1MPa, 1.6MPa. Dedicated manual gas valve, WSD4F dedicated manual gas valve