What is a ball valve?

Q. What is a ball valve?
A. The ball valve is the standard in plastic piping systems, though it should be used only for clean, on/off service.  A plastic ball with a hole through it rides in a "seat" of PTFE or polyethylene.  This seat can be damaged by particles being caught when the valve is closed or opened.  The term true union means that the carrier or main part of the valve can be removed from the piping system and be either repaired or replaced.  Configurations for ball valves include single union, true union and compact.  Actuation is available of true union valves.  Precautions should be taken in using ball valves in situations with suspended particles, high velocity and modulation.
Article Title:
What is a ball valve?
Article Summary:
description of a ball valve.
Article Date:
5/27/2003
Article ID:
611
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