check valve

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check valve

A valve that permits fluids or gases to flow in just one direction. Check valves are used in infusion sets to prohibit backflow of fluids during intravenous therapy.
See also: valve
References in periodicals archive ?
Granted, these are low-pressure applications; but at 20,000 psi, a seal is best made over a small or narrow area, not a wide area like 90% of all check valves.
With proper spring selection, our check valves are designed to function equally well in either a vertical or horizontal position.
In most cases, design engineers integrate check valves into their rocket engine designs.
We are very pleased to have a barbed check valve option for our customers," said Ken Davis, global product line manager.
The single plate wafer check valves are an exciting development for us and is a testimony to the skills and expertise of everyone involved with our product development programme," said Dave Bowen, Business Development Manager, Shipham Valves.
The 12" dual plate check valves are being supplied to John Bell Pipeline, main contractor for the In Amenas Trunklines, the largest wet gas project in Algeria, involving the development and production of LNG from four wet gas fields.
Waste lines from a Sewage ejector or sump pump use a check valve to stop wastewater from flowing back into the basin.
Tyco Flow ControlCOs Fasani plant near Milan has inaugurated a new test bench for large gate, globe and check valves that is believed to be the biggest in Europe.
Poppet seals, custom molded from nitrile and many other high performance elastomer compounds, are manufactured by this company for use in check valves for pressure relief and shut-off devices in natural gas valve assembly applications.
Check valves operate automatically, permitting flow in one direction only.
Place guards over lines so they don't cover cylinder check valves.
The ICS slip-in check valves can be installed with free flow in either direction and provide an all-steel construction and range in size from 1.