check valve

(redirected from One-way valve)
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Related to One-way valve: pulmonary artery, Non return valve

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 ?
"Most people have one-way valves, or doors, [located at both ends of the tear duct] that prevent this backward flow," says Dr.
When blood has to move up the body from the feet it is helped on its way by a series of one-way valves. When you have varicose veins, some of these valves are broken so the blood slips back down the vein causing the bulges.
Capp Spindt of SRI International in Menlo Park, Calif., hails the article as "the first credible report of an operating vacuum diode or triode on this scale." Diodes act as one-way valves for current between two electrodes; triodes control current via a third electrode.