SKU: 17819901251

Watts 007-040 40mm 1½" DCV Double Check Valve Backflow Preventer Device/Kits

Sale price$247.95 Regular price$275.50
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Description

Watts 007-040 40mm 1½" DCV Double Check Valve Backflow Preventer Device/KitsOverview The listing is for Watts 007 040 40mm 1 1 2" DCV double check valve backflow preventer range in 3 configuration variants Device Only (007 040) Kits with Strainer & 2 Lockable Ball Valves (007 040 LBS) Kits with 2 Unions, Strainer & 2 Lockable Ball Valves (007 040 ULBS) The Watts double check valve DCV backflow preventers are designed to protect portable drinking water in the mains supplies from cross connections from water applications such

Overview

The listing is for Watts 007-040 40mm 1 1/2" DCV double check valve backflow preventer range in 3 configuration variants

- Device Only (007-040)

- Kits with Strainer & 2 Lockable Ball Valves (007-040-LBS)

- Kits with 2 Unions, Strainer & 2 Lockable Ball Valves (007-040-ULBS)

The Watts double check valve DCV backflow preventers are designed to protect portable drinking water in the mains supplies from cross-connections from water applications such as irrigation, fireline or industrial processing. The Watts DCV is compatible with other popular brands such as Fabco, Tyco, Wilkins and Conbraco Apollo.

The use of the Watts double check valves DCV back flow preventer must be in accordance with the Australian national plumbing codes and local plumbing requirements, who shall deem the applications as non-health hazardous in nature. The local authorities will have the jurisdiction regarding the vertical orientation, frequency of testing or any other requirements. 

In other situations where the cross-connections contain hazardous chemicals, such as swimming pools or sewage processing plants, the potential contamination can be lethal or dangerous. The double check valve DCV backflow preventer may be regarded as insufficient protections by the plumbing authorities. In this case, a RPZ reduced pressure zone backflow preventer must be used instead. A RPZ reduced pressure zone backflow preventer's design differs from the DCV by featuring an additional differential release valve as a mechanical fail-safe device which will open and dump contaminated water to isolate the mains water supply. 

A RPZ is usually significantly more expensive than the equivalent DCV counterparts, even though they may look very similar. Customers need to check with the local plumbing authority to ensure the correct backflow preventers are employed for the jobs. 

All Plumbing Online stocks and supplies both Watts DCV and RPZ in full range of sizes and kits configurations. Just ask me any further questions if still unsure between DCVs and RPZs. All Watts DCV and RPZ are Watermark approved and are one of the most popular kits in Australian market due to its reputations and values for money.

 

Technical Details

Manufacturer: Watts
Specifications:

Maximum Working Pressure: 1400 kPa
Temperature Range: 0.5°C to 90°C

Thread Size: BSP 1 1/2", 40mm

Thread Physical Measurements: 47.803mm external male/internal female thread (refer to the BSP vs Physical measurement table chart in the photo gallery)

Material: DR Brass
Features:

  • Ease of maintenance - only one cover 
  • Top entry
  • Replaceable seats and seat discs
  • Modular construction
  • Compact design
  • Cast bronze body construction
  • Top mounted ball valve test cocks 
  • Low pressure drop
  • No Special tools required for servicing 

Intended Use: Prevent backflow to protect drinking water supplies from contamination 

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 17819901251

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John
Natrona Heights, US
★★★★★ 5
Awesome!
Size: Large 24in x 1.25in
These straps are exactly what I needed! I got them to hang my extension cords in my truck and they worked so well, I got three more to hang my water hoses in my truck also!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2026
T
Verified Purchase
T.J.88
Dallas, US
★★★★★ 5
Nice product with lots of uses. Strong magnet and great strap
Size: Medium 16in x 1in
Used this to replace the Klein magnetic strap on my C-800 multimeter. (This is not easy and takes a lot of manipulation, but if you can get it in the plastic loop on the multimeter up past where the loop in the strap end is sewn, you can use a screwdriver through that to yank it the rest of the way). Once it’s done it’s beautiful! This thing could hold 2 dozen multimeters and it’s MUCH longer without being too long! Otherwise it’s just an awesome strap anyway. It holds a lot of weight (I didn’t test to spec) but definitely enough for what one would expect! I have both sizes, the smaller one is attached to the multimeter and the larger holds a cord to the side of my toolbox. (Tip)- to prevent slipping just put the magnetic base on the other side of the metal by the box tray and let the strap hang over (if attached to a toolbox). It adds to the weight it can hold too. (Just physics). That will work on anything vertical and thin enough to get around with enough slack to still use the strap. 👍. Would definitely buy another
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 27, 2025
D
Verified Purchase
dd
Belleville, US
★★★★★ 5
An effective organizing solution for missions involving movable equipment
Size: Medium 16in x 1in
Following the compromised operation in Prague, I was tasked with organizing equipment for the embassy annex in Vienna. The VELCRO Brand Magnetic Straps provided an essential solution for securing various tools and equipment to metal surfaces, facilitating quick access during critical moments. The durability of the strap, combined with an impressively strong magnet, ensured that our gear remained in place despite variable operational conditions. However, the loop formed by the strap could be larger; it limited our options for certain garden hoses, which became a notable drawback. Overall, the robust quality of the straps enhances logistical efficiency in high-pressure scenarios. Katarina's earlier input on this product proved beneficial, although I detected apprehension in her demeanor while discussing its application. Recommendation: An effective organizing solution for missions involving movable equipment, with minor adjustments needed for cord size.
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Reviewed in the United States on December 30, 2025
K
Verified Purchase
Kindle Customer
San Leandro, US
★★★★★ 5
Sturdy and Reliable
Size: Medium 16in x 1in
Very sturdy and holds up well with regular use. It feels solid and well-made, not flimsy or like it’s going to wear out quickly. Definitely something you can rely on without worrying about it falling apart.
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Reviewed in the United States on May 1, 2026
F
Verified Purchase
Frank Fortino
Battle Creek, US
★★★★★ 5
Very strong magnet
Size: Large 24in x 1.25in
Great product,, very secure and the long strap allows you to hang a variety of items.
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Reviewed in the United States on April 19, 2026

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