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Flap valve
(redirected from flapper valve)

     0.03 sec.
(Mech.) a valve which opens and shuts upon one hinged side; a clack valve.

See also: Flap


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Because of the critical performance requirements of the flapper valve seals, their manufacture is said to require a number of special considerations.
Valve seals by Rubber World
There the nozzle moves a flapper valve that seals the system out of the way.
Doff your (gas) cap by Automotive Design & Production
The hopper has a proximity switch to control loading and now has a flapper valve to provide a better vacuum seal than earlier models.
Gravimetric blenders from a new source by Plastics Technology
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