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.
Pvc flap valve design.
You will notice this check valve is constructed from strong durable material and has a sleek design.
These devices are fully self activating.
What is the purpose of flap valves.
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.
Flap valves are one way valves which are installed at the open end of a pipe line or culvert.
Flap valves are installed at the end of sanitary sewage pipes entering.
Self aligning resilient seat cover design provides reliable performance.
The flexible flap with molded in weight reduces the possibility of pounding which is often a problem on valves having metal to metal seats.
Flap valves effectively protect plumbing systems from rats entering the buildings.
Under direct pressure the valve will open and it will close when the pressure from outfall fluid is relieved.
Flap gate 6 standard rating required select rating 1 star worst 2 stars 3 stars average 4 stars 5 stars best name.
Flap valves of karmat are innovative devices protecting rooms on the lower levels against flooding caused by backward flow of storm water and sewage.
Pattern flange and a molded neoprene flap which also acts as a hinge.
To let the outflow of water pass through and to stop the inflow of water.
A wide variety of pvc flap valve options are available to you such as plastic brass and stainless steel.
A well made flap valve does its job properly and quietly.
The flap gate s molded body of reinforced copolymer has a 125 lb.
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.
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.
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.
It is important that you can completely rely on flap valves in case of flooding.