SKU: 25686546598

Watts 009-040 40mm 1 ½" RPZ Reduced Pressure Zone Backflow Preventer Device/Kits

$402.75 $447.50
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Ships within 48 hours · Estimated delivery Jul 27 - Aug 1

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Description

Watts 009-040 40mm 1 ½" RPZ Reduced Pressure Zone Backflow Preventer Device/KitsOverview The listing is for Watts 009 040 40mm 1" RPZ Reduced Pressure Zone backflow preventer range in 3 configuration variants Device Only (009 040) Kits with Strainer & 2 Lockable Ball Valves (009 040 LBS) Kits with 2 Unions, Strainer & 2 Lockable Ball Valves (009 040 ULBS) The Watts RPZ reduced pressure zone backflow preventer takes the backflow prevention protection one step further than a conventional DCV double check valve. Compared to a Watts

Overview

The listing is for Watts 009-040 40mm 1½" RPZ Reduced Pressure Zone backflow preventer range in 3 configuration variants

- Device Only (009-040)

- Kits with Strainer & 2 Lockable Ball Valves (009-040-LBS)

- Kits with 2 Unions, Strainer & 2 Lockable Ball Valves (009-040-ULBS)

The Watts RPZ reduced pressure zone backflow preventer takes the backflow prevention protection one step further than a conventional DCV double check valve. Compared to a Watts DCV, the WATTS RPZ features an additional differential release valve in the center of the valve body. In case of a check valve mechanical failure or debris caught inside, the differential release valve will open to cut off the contaminated water source to the portable water mains supply.  This Watts RPZ backflow preventer employs two in-line, independent check valves, captured springs and replaceable check seats with an intermediate relief valve. The Watts RPZ is compatible with other popular brands such as Fabco, Tyco, Wilkins and Conbraco Apollo.

This makes the Watts RPZ the only suitable device when there are potentially dangerous cross-connections such as swimming pools or sewage processing plants, where a DCV is deemed as insufficient protections by water authorities in accordance to national plumbing codes.

A Watts 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 used 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 Watts 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 1½" 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:

  • Internal relief valve for reduced installation clearances
  • Top entry single access cover and modular construction for ease of maintenance 
  • 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: 25686546598

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Dani S.
Carnegie, US
★★★★★ 5
Great!
Color: Gold+Smiley Face
Works great and is so pretty!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026
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raj
Belleville, US
★★★★★ 5
Perfect fit
Color: Black+Smiley Face
Nice
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Reviewed in the United States on May 14, 2026
J
Verified Purchase
Jeanne Conley
Battle Creek, US
★★★★★ 3
Suction cups aren’t the best
Color: Black+Smiley Face
The suction cups don’t hold and my smiley sponge isn’t snug on the post so it sometimes falls off.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 16, 2026
S
Verified Purchase
Sisi
Whiting, US
★★★★★ 5
Sticks and stays in place!!
Color: Black+Smiley Face
Love love loveeee this! Took me a while to find one that actually sticks and stays in place. I've had mine for a few months now. Looks just like the photos & comes with the suction cups and an adhesive strip if you want a firmer hold. The suction cups work just fine. Would recommend 👍🏾😁
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Reviewed in the United States on August 4, 2025
L
Verified Purchase
Lucy
New York, US
★★★★★ 5
Meets My Expectation
Color: Pine, Color: Pine
Meets my expectation. I ordered these to put on my living room wall. When I opened the box they were neatly wrapped and packaged. Super easy to put together and install. I love the rod bracket that mounts onto the wall making it easy to slide the rods into the holes on the back of the shelf. Very sturdy and holds my little decors and look nice on the wall.
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Reviewed in the United States on November 1, 2025

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