Valves A valve is a device that regulates the flow of a fluid (gases, liquids, fluidized solids, or slurries) by opening, closing, or partially obstructing various passageways. Valves are technically pipe fittings, but are usually discussed as a separate category. In an open valve, fluid flows in a direction from higher pressure to lower pressure. Valves are used in a variety of contexts, including industrial, military, commercial, residential, and transport. There are many types of valves such as gate valve, glove valve, angle valve, automatic stop valve, cheek valve, back pressure valve, butterfly valve, diaphragm valve etc. Valve materials: Ø For larger size cast iron or cast steel or forged steel is used. Ø For valves seats, discs and spindles brass is used. 1. Gate valve, Glove valve, Angle valve, Automatic stop valve etc are called normally stop valve because they are used to stop the flow of fluids. ...
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