What is a valve? What are the different types of Valves in the market? A valve is a device that regulates, directs or controls fluid flow (gas, liquid, fluidized solids or slurry) by opening, closing, or partially blocking various aisles. Valves are technical fittings but are usually discussed as separate categories. In an open valve, the fluid flows in the direction from high pressure to low pressure. The simplest, and very ancient, the 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 pressure or flow downstream and operate on sophisticated automation systems. Valves have many uses, including controlling water for irrigation, industrial needs to control processes, use of housing such as on / off and pressure control for dishwash...
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