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 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 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 shall comply with the requirements of BS EN: 12334 or equivalent.
Check valve shall be suitable for natural gas application.Check valve size, pressure rating and end connections shall be in accordance with the meter supplied.
Double Check valve backflow prevention assemblies are prohibited on irrigation systems.
Check valve 2 inches and larger shall be listed in UL Bld Mat Dir or FM APP GUIDE.
More Definitions of Check valve
Check valve means a component that is internal to
Check valve means a valve, which allows flow in only one direction.
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 device which permits the flow of gas in one direction and prevents the flow of gas in the opposite direction;
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 component that is internal to a spray sprinkler body and prevents system drainage during periods of nonoperation.