check valve

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check valve

[′chek ‚valv]
(mechanical engineering)
A device for automatically limiting flow in a piping system to a single direction. Also known as nonreturn valve.

Check Valve


a device that passes a stream of fluid or gas through a pipe only in one direction and closes automatically when the direction of the stream reverses. It is used in various thermal power engineering and production plants.

check valve, back-pressure valve, reflux valve

check valve
An automatic valve which permits liquid to flow in only one direction. Also see non-return valve.

check valve

check valveclick for a larger image
Two types of check valves.
A valve that permits the flow of fluid in one direction only. Various types of check valves are depicted in the illustrations.
References in periodicals archive ?
Place a direct purchase order of "Global Check Valve industry" report at http://www.
In most cases, design engineers integrate check valves into their rocket engine designs.
Meanwhile, the closing of the check valve creates a slight vacuum, which permits the poppet valve to drop open again.
The 122 Side Seal Cartridge Check Valve incorporates a cylinder-shaped design with an external sealing o-ring, and offers users convenient mounting options for manifolds or assemblies.
While I am not one to design my process around being kind and gentle to the molding machine, doing this will help the check valve last a bit longer.
The plug valves and check valves that are available on the website are very economical and very well made.
The check valve in the 250/HS hydrant uses a fabric and steel reinforced rubber flapper in the hydrant's shoe to prevent reverse flow of water.
It was a case of making the most of the resources we already had," says Don Burgher, check valve and manhole fill cover team leader.
This compact and versatile linear valve is available as a normal venting valve, with integrated check valve, with automatic venting or with both integral check valve and automatic venting.
The 855 Series cartridge check valve offers a higher flow capability than previous models, in an 8mm dia.
remove the top check valve and mercury float by removing the 3/8-in.
New precisely engineered, micro check valve suitable for many industry applications