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City Plumbing GB£9.76Visit shop Plumbright Double Check Valve 28Mm Dzr Dcv28dzr
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The Plumbright Double Check Valve (28mm) is an essential safety component for plumbing professionals and DIY enthusiasts looking to protect their water systems from backflow contamination. It is engineered for 28mm pipework, providing a robust barrier that keeps non-potable water from entering the mains supply, though it requires precise installation to ensure a watertight, code-compliant seal.
| Model Part Number | DCV28DZR |
|---|---|
| Brand | Plumbright |
DZR stands for Dezincification Resistant. It is a specialized alloy designed to prevent the leaching of zinc from the brass, which otherwise leads to structural weakness and leaks in plumbing systems.
Yes, provided the flow direction arrow points in the direction of the water movement. Gravity does not significantly impact the performance of the internal spring-loaded check mechanisms.
While the valve is designed for longevity, it should be checked during your regular annual plumbing system maintenance to ensure there are no signs of debris buildup or seal fatigue.
Yes, it is frequently used in central heating circuits to protect the potable water supply from additives or contaminants present in the radiator loop.
No. This valve is strictly intended for water systems. Using it on gas lines is dangerous and against building regulations.
Check that the fitting is fully seated and the internal seal is properly aligned. Re-tighten the compression nut if necessary.
Verify that the valve is installed in the correct orientation. A reversed valve will act as a permanent obstruction to flow.
To install the valve, ensure the water supply is fully isolated. Inspect the pipe ends for burs or debris, which can damage the internal seals. Ensure the valve is oriented according to the flow direction arrow marked on the brass body. Use compatible thread sealant or compression fittings as required by your local piping system standards. For long-term maintenance, perform periodic visual inspections for signs of weeping or calcification. Avoid using harsh chemical cleaners on the exterior, as they may affect the brass finish over time.
