Pvc Flap Valve Design

Flap valves effectively protect plumbing systems from rats entering the buildings.

Pvc flap valve design.

Flap valves are one way valves which are installed at the open end of a pipe line or culvert. Flap valves of karmat are innovative devices protecting rooms on the lower levels against flooding caused by backward flow of storm water and sewage. Their purpose is to allow downstream water to exit the pipe via a one way flap door whilst preventing rising water levels outside of the pipe from entering the pipe and flowing back up the system and flooding the protected area. People usually only realise the enormous importance of flap valves when the water rises or flooding occurs.

Self aligning resilient seat cover design provides reliable performance. Flap valves sometimes referred to as flap gates are put on the end of a flanged pipe to allow the flow of water out of the pipe but prevent anything from flowing back in such as sticks leaves or other debris. A well made flap valve does its job properly and quietly. Our pvc swing check valve is excellent for preventing backflow into your water system during routine cleanings backwashing etc.

It is important that you can completely rely on flap valves in case of flooding. Under direct pressure the valve will open and it will close when the pressure from outfall fluid is relieved. Flap valves are installed at the end of sanitary sewage pipes entering. Pattern flange and a molded neoprene flap which also acts as a hinge.

What is the purpose of flap valves. Flap gate 6 standard rating required select rating 1 star worst 2 stars 3 stars average 4 stars 5 stars best name. The series 3800 type r flap valves are designed for use on pump discharges to prevent the backflow or intrusion of water into the pipe. A wide variety of pvc flap valve options are available to you such as plastic brass and stainless steel.

Made in the usa from high quality pvc. My motivation in building these valves stemmed from a desire to build a pvc water pump but the check valves were around 10 00 each. The flexible flap with molded in weight reduces the possibility of pounding which is often a problem on valves having metal to metal seats. That seemed a little steep for a pvc build so while looking for alternative options i settled on this design which is about the cheapest while still being practical and useful that i could imagine.

The flap gate s molded body of reinforced copolymer has a 125 lb.