What is a PVC flap foot valve?
PVC Flap Foot Valves are specialized one-way valves for PVC systems. Fully submerged at pump suction line ends, they automatically stop backflow to keep pumps primed. Made from durable 100% virgin PVC, they are corrosion-resistant and ideal for irrigation, well pumps, water transfer and more.
PVC Flap Foot Valve Information Sheet
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Item |
Details |
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Product Name |
PVC Flap Foot Valve |
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Material |
PVC / UPVC |
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Sizes |
63mm, 75mm, 90mm, 110mm, 160mm, 200mm |
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Colors |
Standard: blue, gray, white; Custom colors available |
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Weather Resistance |
UV resistance (anti-aging & anti-discoloration) |
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Packaging |
Carton packaging |
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MOQ |
1 carton for standard sizes |
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Sample |
Free samples provided |
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Lead Time |
Stock orders: 1 week after payment; Large orders: about 44 days after advance payment |
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Payment Terms |
44% advance payment, balance before shipment |
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Custom Service |
Custom label and custom cardboard box |
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Factory |
Direct factory in Quzhou |
Common Applications and Uses of PVC Flap Foot Valve
- Residential & Agricultural Wells: Used in shallow or deep wells, particularly with non-self-priming pumps (jet pumps, centrifugal pumps), to keep the pipe filled with water.
- Irrigation and Ponds: Placed in ponds, lakes, or rivers to supply water for irrigation, where the screen filters out debris to prevent pump damage.
- Sump and Transfer Pumps: Ensures consistent prime and prevents backflow in industrial or commercial fluid transfer systems.
- Prevents Backflow: Stops water from returning to the source when the pump is turned off.
FAQ
Q: 1,What is the purpose of a flap valve?
A: PVC flap foot valves are important to prevent reverse flow of water into holding structures, protecting water assets from contamination, animal ingress and flooding. The Drinking Water Inspectorate (DWI) recommends that flap valves should be installed on all drainage and overflow routes and inspected every six months.
Q: 2,Which is better brass or PVC foot valves?
A: PVC flap foot valves are better for applications involving cold water, corrosive fluids, and tight budgets. Brass valves are better for hot water, high-pressure gas or air lines, and where regulations for potable water systems demand metal components.
Q: 3,How do you install a PVC flap foot valve?
A: Install PVC flap foot valve at the bottom end of the pump's suction pipe, fully submerged in water (wells, ponds, tanks). Make sure the flow arrow on the valve points toward the pump (upward), and the screened inlet faces the water source to filter debris.
Q: 4,How often should a PVC flap foot valve be replaced?
A: There's no fixed replacement timeline. It typically lasts 5-10 years with regular cleaning and proper installation. Replace it if you notice pump prime loss, reduced flow, backflow, or visible damage.
Q: 5,What is your MOQ for PVC flap foot valves?
A: Our MOQ is very flexible for standard sizes. We accept 1 carton for trial orders, making it easy for small businesses to test the market. Bulk orders are also welcome for large projects.
Q: 6,What payment terms do you accept for B2B orders?
A: We usually require a 44% deposit to start production, with the balance paid before shipment. For small orders, we also support payment methods to suit your needs.
