PVC Ball Valve Double Union Socket Solvent Weld 20mm to 110mm Plumbing Fittings

Match the valve size to your pipe's nominal outside diameter. For example, if your pipe is marked DN25 or ¾", select the 25mm variant. If you are unsure, measure the outside diameter of the pipe and compare it to the size options listed above — 20mm (~¾"), 25mm (~1"), 32mm (~1¼"), 40mm (~1½"), 50mm (~2"), 63mm (~2½"), 75mm (~3"), 90mm (~3½"), 110mm (~4⅓").

A standard solvent-weld ball valve is permanently bonded into the pipe — if it fails or needs servicing, you must cut it out and re-cement new fittings. The double union design lets you unscrew the valve body from the two line unions without disturbing the bonded pipe joints, making replacement or maintenance far quicker and less disruptive.

Yes. The PVC body is resistant to chlorinated water and common pool chemicals at typical service concentrations. It is widely used in pool bypass circuits, filter isolation, and chemical dosing lines. Confirm the pressure and temperature ratings for your specific installation against the variant specifications before fitting.

PVC valves are generally rated for cold to warm water service (typically up to around 60°C / 140°F at reduced pressure). For hot water, steam, or high-pressure applications, a metal or CPVC valve would be more appropriate. Please check the pressure and temperature rating listed in the variant specifications or contact us to confirm suitability for your application.

Use a standard PVC solvent cement (and primer where required by local code) rated for the pipe schedule you are working with. Apply primer to both the pipe end and the socket, then apply cement and push the pipe firmly into the socket with a slight twist. Allow the joint to cure fully before pressurising the line — refer to the cement manufacturer's cure time guidelines.

Both colours are the same valve in different finishes. Choose White if your existing pipework or enclosure is white (common in domestic plumbing and irrigation). Choose Grey if your system uses grey conduit-style pipe or if the installation is in an exposed area where a neutral tone is preferred. There is no functional difference between the two.

Yes — the double union ball valve is a popular choice for irrigation manifolds because individual zones can be isolated and the valve removed for cleaning or replacement without dismantling the entire manifold. Select the size that matches your manifold header pipe diameter.