flap valve

(redirected from flapper valves)
Also found in: Dictionary.

flap valve

[′flap ‚valv]
(mechanical engineering)
A valve fitted with a hinged flap or disk that swings in one direction only.

flap valve

In plumbing, a check valve in the form of a hinged disk which permits flow in one direction only.
Mentioned in ?
References in periodicals archive ?
They can waste large volumes of water from constant slow leaks or intermittent sticking of internal parts like floats and flapper valves.
Custom manufactured silicone seals, especially designed for use in flapper valves on aircraft evacuation chutes and life raft inflation systems, are available from this molded rubber products manufacturer.
TAPCO designs, engineers and manufactures high-performance metal seated industrial gate valves, butterfly valves, flapper valves, actuators, and internal components used in high-temperature, highly abrasive, and highly corrosive environments in the petrochemical refining industry.
However, this list is not inclusive of all the steel work which shall be re-coated under this specification and there are several appurtenances, brackets, flapper valves, scrapers and other miscellaneous small items which have not been specifically identified in this specification, but which shall be re-coated.
Custom manufactured silicone seals, specially designed for use in flapper valves on aircraft evacuation chutes and life raft inflation systems, are available from this molded rubber products manufacturer.