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Description
This premium PVCu check valve with double union plain metric sockets is designed to provide reliable one-way flow control in demanding pipework systems. Manufactured from robust unplasticised PVC, it offers excellent chemical resistance and long-term durability in both industrial and commercial installations.
Featuring EPDM seals for a secure, leak-resistant joint, this high-performance check valve is ideal for use in water treatment, swimming pools, chemical handling, aquaculture and general process applications. The double union design allows easy installation and removal for maintenance without disturbing the rest of the pipeline.
Product Features
- High-quality PVCu check valve for dependable non-return flow control
- Double union plain metric sockets for straightforward solvent-weld connection
- Available sizes: 20mm, 25mm, 32mm, 40mm, 50mm and 63mm to suit common metric pipework
- EPDM seals for excellent sealing performance and broad chemical compatibility
- Compact in-line design suitable for horizontal or vertical installations (with upward flow)
- Corrosion-resistant construction for use with water and many industrial fluids
- Smooth internal bore to minimise pressure loss and reduce flow restriction
Key Features and Benefits
- Prevents backflow to protect pumps, filters and downstream equipment from damage.
- Double union ends allow the valve body to be removed for inspection or replacement without cutting the pipe.
- PVCu body offers a lightweight alternative to metal valves, simplifying handling and installation.
- EPDM seals provide a reliable, watertight joint and resist a wide range of common process chemicals.
- Metric plain socket ends give a secure solvent-weld connection within standard PVCu pipe systems.
- Low-maintenance design reduces downtime and associated servicing costs over the product life.
Specifications
| Specification | Detail |
|---|---|
| Material | PVCu (unplasticised polyvinyl chloride) body with EPDM seals |
| Connection type | Double union plain metric sockets for solvent-weld PVCu pipe |
| Available sizes | 20mm, 25mm, 32mm, 40mm, 50mm, 63mm |
| Function | Non-return / check valve allowing flow in one direction only |
| Installation orientation | Suitable for horizontal or vertical lines with flow in the direction of the arrow |
| Typical media | Water, pool water, many dilute chemicals and process fluids (check chemical compatibility) |
Applications and Ideal Uses
This PVCu double union check valve is well suited to a wide range of fluid handling and pipework systems where backflow prevention and easy maintenance are essential.
- Swimming pool, spa and water feature circulation systems
- Water treatment plants, filtration and dosing lines
- Chemical handling, plating and general process pipework
- Aquaculture and fish farming water circulation systems
- General industrial and commercial building services pipework
Frequently Asked Questions
How do I choose the correct size of PVCu check valve for my system?
Select the valve size to match the outside diameter and specification of your existing metric PVCu pipework. This valve is available in 20mm, 25mm, 32mm, 40mm, 50mm and 63mm plain socket sizes, which are designed to be solvent-welded directly onto corresponding metric PVCu pipes.
Can this check valve be installed in any orientation?
The valve can typically be installed horizontally or vertically, provided the flow direction follows the arrow marked on the valve body. In vertical installations, it should be fitted with upward flow to ensure the internal mechanism functions correctly. Always ensure adequate support for the surrounding pipework.
Are the EPDM seals suitable for all types of chemicals?
EPDM seals offer good resistance to water, many dilute acids and alkalis, and a wide range of process fluids, making them suitable for many industrial and commercial applications. However, they are not suitable for certain oils, fuels and some concentrated chemicals. Always check the compatibility of EPDM with your specific media and operating conditions before use.