SKU: 25686546598

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

$402.75 $447.50
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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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4.1 ★★★★★
Based on 11 reviews
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Verified Purchase
Bryan Brook
Birmingham, US
★★★★★ 4
Good product with quality-control issues
Color: Dark Grey, Size: 31W x 31L
I really like these jeans. I own them in almost every color they offer, but the manufacturing consistency is hit or miss. The latest pair I bought has a much smaller pocket opening than the others. I also always order the same size (31×31), but when I got the red pair they were ridiculously long, more like a 31×36. And the first khaki pair I bought had pockets about half as deep as the rest. My iPhone would literally stick out of them. That said, for the price and overall look, they’re still a solid buy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 15, 2026
G
Verified Purchase
George E.M.Yates
Massapequa, US
★★★★★ 5
Comfortable
Color: Deep Brown, Size: 34W x 32L
Nicely fit.
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Reviewed in the United States on May 25, 2026
S
Verified Purchase
scott
Chelsea, US
★★★★★ 5
Just buy. You will want more in different colors
Color: Lemon Yellow, Size: 40W x 32L
Excellent pants. Super comfy
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Reviewed in the United States on May 20, 2026
A
Verified Purchase
Adan Jarina
Whiting, US
★★★★★ 5
HIGHLY RECOMMENDED!
Color: Deep Brown, Size: 34W x 32L
It fits so well and true to size. The quality of the fabric is commendable. I will surely buy again.
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Reviewed in the United States on May 20, 2026
S
Verified Purchase
SwitchNiche
Bozeman, US
★★★★★ 3
Mid jeans. Not bad but not amazing
The button is super wobbly and feels like itll break at any moment. The zipper quality also isnt great even when im not wearing them the zipper cant go above like 80% when I wear them itll slowly unzip if I twist or turn my body over a few hours. There's also not a lot of room for your bits so maybe go a size up. Other than that rhe material is comfy and has a bit of give so unlike other skinny jeans you dont feel restricted. The color is also super vibrant and lovely. Im not gonna return them unless the zipper breaks but idk if ill buy another pair if the button is like this.
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Reviewed in the United States on October 11, 2025

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