PVC Bottom Check Valve Pipe Fittings Non-Return Valve Solvent Weld ID 20-75mm
PVC Bottom Check Valve Pipe Fittings Non-Return Valve Solvent Weld ID 20-75mm
PVC Bottom Check Valve Pipe Fittings Non-Return Valve Solvent Weld ID 20-75mm
PVC Bottom Check Valve Pipe Fittings Non-Return Valve Solvent Weld ID 20-75mm
PVC Bottom Check Valve Pipe Fittings Non-Return Valve Solvent Weld ID 20-75mm
PVC Bottom Check Valve Pipe Fittings Non-Return Valve Solvent Weld ID 20-75mm
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PVC Bottom Check Valve Pipe Fittings Non-Return Valve Solvent Weld ID 20-75mmPVC Bottom Check Valve Pipe Fittings Non-Return Valve Solvent Weld ID 20-75mmPVC Bottom Check Valve Pipe Fittings Non-Return Valve Solvent Weld ID 20-75mmPVC Bottom Check Valve Pipe Fittings Non-Return Valve Solvent Weld ID 20-75mmPVC Bottom Check Valve Pipe Fittings Non-Return Valve Solvent Weld ID 20-75mmPVC Bottom Check Valve Pipe Fittings Non-Return Valve Solvent Weld ID 20-75mm

PVC Bottom Check Valve Pipe Fittings Non-Return Valve Solvent Weld ID 20-75mm

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$12.44 USD
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In stock (500 units), ready to be shipped

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Description

PVC Bottom Check Valve — Reliable Backflow Prevention for Pipe Systems

When a pump shuts off unexpectedly or system pressure drops, uncontrolled backflow can damage equipment, contaminate water supplies, and cause costly repairs. Builders, plumbers, and DIY enthusiasts working on water supply, irrigation, or drainage systems need a dependable one-way valve that holds tight every time. The PVC bottom check valve with solvent weld connection is engineered to stop reverse flow automatically, protecting your pipework without requiring manual intervention.

This non-return valve is constructed from rigid PVC (polyvinyl chloride), offering a lightweight yet structurally sound body that resists common chemicals and corrosion. The solvent weld (socket) ends create a permanent, leak-free bond with standard PVC pipe. Available in seven inner diameter sizes ranging from 20mm to 75mm (approximately 3/4 in to 3 in), corresponding to nominal pipe sizes DN15 through DN65, making it compatible with a broad range of residential and light commercial piping systems.

Typical applications include submersible pump discharge lines where backflow prevention is critical, garden and agricultural drip irrigation systems requiring one-way flow control, rainwater harvesting tank inlets to prevent siphoning, and gravity-fed drainage runs where reverse flow must be blocked. Whether you are installing a new pump system or retrofitting an existing pipeline, this solvent weld check valve delivers consistent, tool-free operation once bonded in place.

🔗 Compatibility: Designed for standard Schedule 40 / Class D PVC pipe. Solvent weld (socket) connection — use PVC primer and cement for a permanent bond. Suitable for cold water, irrigation fluids, and mild chemical solutions within PVC service ratings. Not recommended for hot water lines above 60 °C (140 °F) or compressed air applications.

✅ Key Features of These PVC Bottom Check Valves

  • 🔄Automatic One-Way Flow Control
    The spring-assisted or gravity-seated disc opens under forward flow pressure and closes instantly when flow stops or reverses, preventing backflow without any manual operation.
  • 🧪Corrosion-Resistant PVC Body
    Full PVC construction resists rust, scale, and a wide range of mild chemicals, making it suitable for water supply, irrigation, and light-duty chemical transfer lines.
  • 🔧Solvent Weld Socket Ends
    Both inlet and outlet feature standard socket (spigot) ends for a permanent, pressure-tight solvent cement bond — no threading, no clamps, no leaks at the joint.
  • 📐Wide Size Range: ID 20–75mm (DN15–DN65)
    Seven sizes cover the most common residential and light commercial pipe diameters, from 20mm (≈3/4 in) up to 75mm (≈3 in), so you can match your existing pipework exactly.
  • ⚖️Lightweight and Easy to Handle
    PVC construction keeps the valve significantly lighter than brass or cast-iron alternatives, simplifying installation in tight spaces, overhead runs, or vertical pump discharge lines.
  • 💧Low Cracking Pressure for Smooth Flow
    The valve is designed to open at low differential pressure, minimising flow restriction and pressure drop across the fitting — important for pump efficiency and system performance.

📐 Technical Specifications — PVC Check Valve

Material PVC (Polyvinyl Chloride)
Connection Type Solvent Weld (Socket / Spigot)
Inner Diameter Range 20mm – 75mm (approx. 3/4 in – 3 in)
Nominal Pipe Size Range DN15 – DN65
Available Sizes 20mm (DN15), 25mm (DN20), 32mm (DN25), 40mm (DN32), 50mm (DN40), 63mm (DN50), 75mm (DN65)
Valve Type Non-Return / Check Valve (Bottom / Foot type)
Max Working Temperature Up to 60 °C (140 °F)
Max Working Pressure See variant options
Body Color White / Light Grey (standard PVC)
Compatible Pipe Standard Schedule 40 / Class D PVC pipe
Weight See variant options

❓ Frequently Asked Questions

How do I choose the right size PVC check valve for my pipe?

Match the valve's inner diameter (ID) to your existing pipe's inner diameter or nominal size. For example, if you have DN20 pipe (25mm ID), select the 25mm (DN20) variant. When in doubt, measure the outer diameter of your pipe and subtract the wall thickness, or check the pipe's printed markings for its nominal size designation.

Can this check valve be installed in any orientation?

This is a bottom/foot-style check valve, which is primarily designed for vertical installation at the base of a suction line or pump inlet. It can also be installed horizontally in many configurations, but always ensure the arrow or flow direction marking on the body aligns with the intended flow direction. Consult the product markings before bonding in place.

What adhesive should I use for the solvent weld connection?

Use a standard PVC solvent cement (PVC glue) along with a PVC primer/cleaner for a code-compliant, pressure-tight bond. Apply primer to both the pipe spigot and the valve socket, then apply cement and push firmly together with a slight twist. Allow the joint to cure fully before pressurising the system — typically 15–30 minutes for handling and 24 hours for full pressure service.

Is this valve suitable for drinking water (potable water) systems?

PVC is widely used in potable water distribution. However, suitability for drinking water depends on the specific grade of PVC and any applicable local certifications (such as NSF/ANSI 61). If your application requires certified potable water compliance, please contact us to confirm the certification status of the specific variant before purchasing.

How does a bottom check valve prevent backflow?

The valve contains an internal disc or flap held against a seat by a spring or gravity. When forward flow pressure exceeds the cracking pressure, the disc lifts and allows fluid to pass. When the pump stops or pressure drops, the disc returns to its seat under spring force or gravity, creating a seal that blocks reverse flow immediately.

Can I use this valve for irrigation or garden water systems?

Yes. PVC check valves are commonly used in drip irrigation, sprinkler systems, and garden water supply lines to prevent siphoning and maintain system pressure when the pump is off. Select the size that matches your irrigation mainline diameter for a direct, leak-free fit.

What is the difference between a check valve and a gate valve?

A check valve (non-return valve) operates automatically — it opens with forward flow and closes to block reverse flow, requiring no manual action. A gate valve is a manually operated shut-off valve that you open or close by turning a handle. For backflow prevention, a check valve is the correct choice; gate valves are used for isolation, not flow direction control.

🛒 Select your size (Inner Diameter) above, then add to cart.

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