Primaflow Vcd Double Check Valve - 28mm - DZR

DZR stands for Dezincification Resistant. This means the brass alloy is specially formulated to prevent the leaching of zinc when in contact with water, significantly increasing its lifespan and preventing corrosion.

Backflow prevention is crucial for protecting potable (drinking) water supplies from contamination. It stops water that may have come into contact with pollutants from flowing back into the clean water system.

While DZR brass offers good durability, this specific model is generally recommended for cold water applications. Always check the product's full specifications or consult with a plumbing professional for hot water suitability.

WRAS (Water Regulations Advisory Scheme) approval means the product has been tested and meets the stringent standards set by UK water companies for use in contact with drinking water.

28mm is a common pipe size in many plumbing systems, particularly for certain domestic water lines. It's best to measure your existing pipework or consult your system's design plans to confirm compatibility.

While the valve is designed for straightforward installation, it is recommended that plumbing work, especially involving backflow prevention and WRAS-approved components, be carried out by a qualified professional to ensure correct fitting and compliance.

Verify the valve is installed in the correct flow direction. Ensure no debris is obstructing the valve mechanism. Check if other valves in the system are closed.

Ensure all compression fittings are tightened correctly. If soldered, re-check the joint for integrity. For persistent leaks, professional assessment may be needed.

Ensure the valve is correctly seated and that the system pressure is within normal operating limits. Check for any loose pipework.