Check valve definition

Check valve or “anti-drain valve” means a valve located under a sprinkler head, or other location in the irrigation system, to hold water in the system to prevent drainage from sprinkler heads when the sprinkler is off.

Check valve means a non-return valve that prevents reverse flow in the vehicle fuel line.

Check valve means a self-closing device which is designed to permit the flow of fluids in one direction and to close if there is a reversal of flow.

Examples of Check valve in a sentence

• Check valve shall be designed to close quietly without permitting any perceptible reverse flow.

• Check valve and cylinder threads in order to verify that they are of the same size and comply with the same reference standard.Visually check the state of valves, cylinders and of O-ring surface.

• Check valve in the connecting pipe between the conservator and transformer tank to ensure that valve is in 'open' position.

• Valves in Manifolds: Check valve; installed to prevent loss of extinguishing agent when container is removed from manifold.

• Apart from needing to guard against the loss of confidences, employers may wish to make certain that the ownership of business contacts and information relevant to the organisation, which has been obtained via use of social media, resides fully in the organisation.

More Definitions of Check valve

Check valve means a valve, which allows flow in only one direction.

Check valve means a component that is internal to

Check valve means a valve that limits flow to one direction. A single check valve is not a backflow prevention device. That requires a double check assembly that can be tested for positive closing.

Check valve means a valve which allows flow in a pipe one way only.

Check valve means a “one-way” valve that prevents water from flowing backward though it. Spring loaded check valves are sometimes installed inside or at the inlet of sprinkler heads. The check prevents low head drainage.

Check valve means a valve that allows fluid to flow in one direction only;

Check valve means a certified device designed and constructed to provide automatic, quick-acting, and abso- lute closure that creates and maintains a watertight seal. The device prevents flow in the opposite direction of that desired when operation of the irrigation system or chemical injection unit fails or is shut down.