Check Valve

A valve that permits the passage of a liquid or gas in one direction only. It stops, or checks, reverse flow.

Also known as a clack valve, from the noise it makes.

Photograph courtesy of Valtorc.com

In boilers they are usually mounted halfway along the boiler drum, or else as a top feed, but away from the firebox, so as to avoid stressing it with the shock of cold water.

Types include:

Clapper

The hinged closure element of a swing check valve.

See also: Ball Check Valve, Flow Control Valve, Swing Check Valve.

Previous PageView links to and from this pageNext Page

Subjects: Mechanical Engineering


Weblinks:
Valtorc International A major supplier in the industrial control and actuated valves market worldwide supplying ARRA CERTIFIED Ball Valves, Butterfly Valves, V-Port Ball Valves and many more American made products since 1980.