Double Check Valves from MacDonald Plumbing & Heating Supplies http://www.macdonaldplumbingsupplies.com/rss/1/productlistings/double-check-valves/cat707 <p>Welcome to the Double Check Valves department at MacDonald Plumbing &amp; Heating Supplies. We offer a wide range of double check valves designed to provide reliable and efficient backflow prevention in plumbing systems.</p> <p>Backflow can pose significant risks to water quality and safety. Our double check valves are specifically engineered to mitigate these risks by preventing the reverse flow of water or contaminants into the main water supply. With our selection of valves, you can ensure the integrity of your plumbing systems and protect against potential contamination.</p> <p>Whether you need a double check valve for a residential, commercial, or industrial application, we have you covered. Our inventory includes a variety of options suitable for different pipe sizes and pressure requirements. Each valve is constructed with high-quality materials and meets industry standards for optimal performance and durability.</p> <p>At MacDonald Plumbing &amp; Heating Supplies, we prioritize the provision of top-notch products sourced from reputable manufacturers. Our experienced team is available to assist you in selecting the right double check valve for your specific needs and to provide expert advice on installation and maintenance.</p> <p>Shop with us today and experience the convenience of finding reliable double check valves backed by our commitment to quality and customer satisfaction.</p> Copyright 2026 MacDonald Plumbing & Heating Supplies en Sun, 11 Oct 2026 02:05:32 +0100 Sun, 11 Oct 2026 02:05:32 +0100 Sun, 11 Oct 2026 02:05:32 +0100 DZR Brass Double Check Valve 35mm DZR Brass Double Check Valve 35mm

DZR Brass Double Check Valve 35mm

The DZR Brass Double Check Valve 35mm is a practical plumbing fitting designed to help prevent reverse flow within compatible water supply systems. Manufactured from dezincification resistant brass, it is designed to provide reliable performance in plumbing installations where resistance to dezincification is important. The 35mm size makes it suitable for compatible larger pipework applications. A useful choice for plumbers and installers, this double check valve is suitable for a range of domestic, commercial and maintenance plumbing projects where backflow protection is required.

 /valves-brassware-c2/check-valves-backflow-prevention-c2126/double-check-valves-c707/macdonald-plumbing-supplies-dzr-brass-double-check-valve-35mm-p26157 /valves-brassware-c2/check-valves-backflow-prevention-c2126/double-check-valves-c707/macdonald-plumbing-supplies-dzr-brass-double-check-valve-35mm-p26157 Sun, 11 Oct 2026 02:05:06 +0100 WRAS Approved Double Check Valve 15mm WRAS Approved Double Check Valve 15mm

WRAS Approved Double Check Valve 15mm

This WRAS approved double check valve (15mm) provides reliable backflow prevention and is an essential component for plumbing systems.

 /valves-brassware-c2/check-valves-backflow-prevention-c2126/double-check-valves-c707/macdonald-plumbing-supplies-wras-approved-double-check-valve-15mm-p13518 /valves-brassware-c2/check-valves-backflow-prevention-c2126/double-check-valves-c707/macdonald-plumbing-supplies-wras-approved-double-check-valve-15mm-p13518 Sun, 11 Oct 2026 02:05:06 +0100 WRAS Approved Double Check Valve 22mm WRAS Approved Double Check Valve 22mm

WRAS Approved Double Check Valve 22mm

This WRAS approved double check valve (22mm) provides reliable backflow prevention and is an essential component for plumbing systems.

 /valves-brassware-c2/check-valves-backflow-prevention-c2126/double-check-valves-c707/macdonald-plumbing-supplies-wras-approved-double-check-valve-22mm-p13616 /valves-brassware-c2/check-valves-backflow-prevention-c2126/double-check-valves-c707/macdonald-plumbing-supplies-wras-approved-double-check-valve-22mm-p13616 Sun, 11 Oct 2026 02:05:06 +0100 WRAS Approved Double Check Valve 28mm WRAS Approved Double Check Valve 28mm

WRAS Approved Double Check Valve 28mm

This WRAS approved double check valve (28mm) provides reliable backflow prevention and is an essential component for plumbing systems.

 /valves-brassware-c2/check-valves-backflow-prevention-c2126/double-check-valves-c707/macdonald-plumbing-supplies-wras-approved-double-check-valve-28mm-p13750 /valves-brassware-c2/check-valves-backflow-prevention-c2126/double-check-valves-c707/macdonald-plumbing-supplies-wras-approved-double-check-valve-28mm-p13750