flap valve

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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.
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An Environment Agency spokesman said: "While the Agency maintains the Prestatyn Gutter we do not maintain the flap valves.
Leg veins contain flap valves designed to direct the flow of blood in an upward direction on its return to the heart.
While the fan shroud took the grand award, other plastic uses honored by the SPE include the grille opening reinforcement on the Ford Focus; the active intake manifold with plastic flap valves on the Rover 75; the soft TPO skin instrument panel for the Pontiac Bonneville; the lower radiator seal made from recycled fires on the Jeep Grand Cherokee; the plastic body panels on the Smart car, and molded-in-color fascias on the DaimlerChrysler Neon.
of 1 1/2", both fitted with perforated caps and rubber flap valves (made from an inner tube) on the bottom end.
Backgroundsefton council is promoting a flood alleviation scheme to be delivered in 18/19 to relieve the flood risk to 40 properties in fouracres.In order to do this, sefton council wish to appoint a consultant to model and consider options for the scheme to produce an economic appraisal, and...Ies.Following the flooding in september 2012 in which internally flooded 24 properties in fouracres and affected 40, flood investigations were carried out and consequently flap valves were installed on both united utilities surface water outlets into melling brook and dovers brook from fouracres.
Pumps features no seals to leak, no check valves or flap valves to clog, dry running capability, and self-priming suction lift to 26 ft.
In addition, the manifold incorporates Mann+Hummel's patented overmolding process using dissimilar materials to create all-plastic flap valves. The valve frame is molded from Zytel nylon 66 and is ultrasonically welded to the manifold, resulting in the elimination of assembly steps.
Flap Valves. These are essentially check valves at the output of a pipe or wall opening to prevent entrance of backwater from the outside.
Tenders are invited for provide all research, design, construct, testing, procurement, and transportation necessary to supply iid with one hundred forty-seven (147) 5 plastic flap valves, one hundred forty-seven (147) 8 plastic flap valves, one hundred forty-seven (147) 5 plastic slide valves and one hundredforty-seven (147) 8 plastic slide valves to replace aging equipment.
The Strategy Involves The Raising Of The Berm To A Minimum Height Of 11.5M Aod And The Replacement Or Supplementing Of The Existing Cast Iron Flap Valves At The Points Of Storm Water Release From The Park, Under The Berm, With Modern Tideflex Type Duckbill Check Valves.
Limited Tenders are invited for Three Years Rate Contract For Refurbishment Of Flap Seats Discs And Chrome Planting Of Flap Valves Of In Submarines
Tenders are invited for Air operated diaphragm pump, 2" ports, aluminum / mild steel wetted parts and outer piston, aluminum air chamber , aluminum center block , aluminum air valve , buna diaphragms buna flap valves, mild steel valve seat , buna gaskets , flow rate to 166 gpm , max dry suction lift 26 LF, max wet suction lift 30 LF, minimum displacement per stroke.