C# for Java Developers

Appendix H. Pipe Valves

Pipe valves come in a number of shapes, sizes, materials, and configurations, including ball, check, butterfly, diaphragm, gate, globe, and compressed-air valves. Some are made of metal; many these days, however, are made of polypropylene plastic, which is cheaper and lighter than most metals and can handle chemicals that metal valves cannot. Pipe valves are commonly used in residential, commercial, and industrial applications where pressurized liquid or air must be moved between two different pipes or containers. The pipe valve allows someone to start or shut off the flow of the liquid or gas.

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