Flap valve

(redirected from flapper valves)
Also found in: Encyclopedia.
(Mech.) a valve which opens and shuts upon one hinged side; a clack valve.

See also: Flap

References in periodicals archive ?
The Wickeder Steel Company is specialized in heat treating and hardening carbon steels for the manufacture of saws, hand tools, and flapper valves, and is one of the top five companies in this sector in the USA.
In 16-second cycles, flapper valves were molded on an all-electric, 55-ton Engel e-max press equipped with a 12 mm screw.
Located at the base of the loader body, the discharge assembly efficiently controls the flow of materials with a pneumatically driven, positive-seal discharge valve that prevents vacuum leaks associated with flapper valves.
A new version of the GlassVu GVL motorized vacuum loader has a new discharge assembly with a pneumatic, positive-seal discharge valve said to prevent leaks that can occur with flapper valves.
The service center will focus on finishing and delivering precision strip to customers for the manufacture of flapper valves for compressors used in automotive, refrigeration and air conditioning units.
Simple flapper valves on the top vents stop this reverse circulation and keep the heat inside.