Globe Valve, ButterFly Valve and Gate Valve _Valve Collection _ Part 2

Globe Valve, ButterFly Valve and Gate Valve _Valve Collection _ Part 2 Globe Valve, ButterFly Valve and Gate Valve _Valve Collection _ Part 2 Link fanpage : Link website: A valve is a device that regulates, directs or controls the flow of a fluid (gases, liquids, fluidized solids, or slurries) by opening, closing, or partially obstructing various passageways. Valves are technically fittings, but are usually discussed as a separate category. In an open valve, fluid flows in a direction from higher pressure to lower pressure. The word is derived from the Latin valva, the moving part of a door, in turn from volvere, to turn, roll. The simplest, and very ancient, valve is simply a freely hinged flap which drops to obstruct fluid (gas or liquid) flow in one direction, but is pushed open by flow in the opposite direction. This is called a check valve, as it prevents or “checks“ the flow in one direction. Modern control valves may regulate p