SKU: 17819901251

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

Sale price$247.95 Regular price$275.50
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 10 - Jul 15

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 1751 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
P
Verified Purchase
pollye
San Leandro, US
★★★★★ 5
Highly recommended sunscreen
Goes on clear, is a little bit greasy at first but soaks into the skin fast. Excellent protection from the sun. Not loaded up with all kinds of moisturizers or smelly lotions. I appreciate that.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 22, 2026
M
Verified Purchase
Michael S.
Whiting, US
★★★★★ 5
Love this! And it's completely unscented
I love this. Non-greasy, easy application, completely unscented. Huge fan.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
O
Verified Purchase
One Click
Natrona Heights, US
★★★★★ 5
Best mineral sunscreen
Size: 3.4 Fl Oz (Pack of 1)
Best sunblock. No white cast if you use the 30 spf. My dermatologist recommended this years ago and I’ve used it since.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2026
R
Verified Purchase
Richie Rich
Natrona Heights, US
★★★★★ 5
No white residue
Size: 3.4 Fl Oz (Pack of 1)
I put this sunscreen on immediately after it was delivered. It smells so good & goes on smoothly without any white residue. It seems to protect the skin, but then again I put some on every hour on the hour and didn't have any issues. I will be reordering. I wish this was on subscribe and save, but will continue to purchase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
A
Verified Purchase
Apple
Chelsea, US
★★★★★ 5
Best sunscreen ever
Size: 3.4 Fl Oz (Pack of 1)
I loooove this mineral sunscreen. It’s goes on so well, and works great. Definitely my favorite of all time!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026

recommand products