Stainless steel fixed ball valve Overview: 
 Stainless steel worm gear fixed ball valve in the oil, gas, coal and ore mining, refining, processing and pipeline systems; in chemical products, pharmaceutical and food production species; hydropower, thermal power and nuclear power production system; in urban and industrial enterprises to the drainage, heating, and gas systems; in farmland irrigation and drainage systems; in metallurgy production system can be widely used, is a construction and production, national defense and people's lives, an important mechanical products. Valve closed piping system in various types of media used to cut off or connected to flow, so that the media in accordance with a predetermined program delivery to each designated point.