Ball Valve 
Threaded Ball Valve Flange Type Ball Valve Welding Type Ball Valve Butterfly Valve Concentric Butterfly Valve Eccentric Butterfly Valve Knife Gate Valve General Knife Gate Valve Professional Knife Gate Valve Strainer Forged Steel Valve Gate Valve Globe Valve Check Valve Other Valves and Fitting Sight Glass Sanitary Valves and Fitting Expansion Joint Plug Valve Needle Valve Steam Trap 
Vacuum valve and flanged gate is belong to one type of valve, the difference in its closure is a valve body, valve body around the center line of the body as a rotation to achieve a kind of open and close the valve.Gate valve in the line is mainly used for cutting, distribution, and change the flow direction of medium.
advantages
1. The fluid resistance is small, its resistance coefficient with section of equal length.7. Applicable scope is wide, size from small to several millimeters, big to a few meters, from high vacuum to high pressure can be applied.
Keywords:butterfly valve ,knife gate valve,ball valve,globe valve,slurry gate valve
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