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Watts 1-in Bronze FNPT Double-check backflow preventer

Name: Watts 1-in Bronze FNPT Double-check backflow preventer
Brand: Watts
SKU: 1000803742
Price: 205.79 USD
Availability: InStock
Rating: 4.5 (14 reviews)

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This 1 inch lead free double check valve assembly is designed to prevent the backflow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. Its compact modular design facilitates easy maintenance with a single access cover for in-line repairs. It is ideal for protection in continuous pressure piping applications and at cross-connections identified as non-health hazards and for contaminants at the service line entrance. This assembly consists of NPT end connections, quarter turn ball valve shutoffs, top mounted test cocks, two in-line independent positive seating check modules, captured springs, and replaceable check discs and seats.

Lead free construction
Modular compact design
Replaceable seats and seat discs
Top entry

General
Series Name	LF007	Inlet Thread Type	FNPT
Type	Double-check backflow preventer	Outlet Thread Type	FNPT
Material	Bronze

Dimensions
Inlet Diameter	1-in	Outlet Diameter	1-in
Inlet Size in Inches	1-in

Features
Maximum Pressure	175 PSI

Compatibility
Compatible Pipe Material	Multi-Purpose

Certifications
CA Residents: Prop 65 Warning(s)	Prop 65 WARNING(S) -	Complies with Federal Lead Guidelines	Yes

Warranty
Warranty	1-year limited

Miscellaneous
UNSPSC	40141700

Check out the Best Selling Backflow Preventers & Vacuum Breakers on Lowes.com

Review

4.5 out of 5

14 Reviews

4 Star

3 Star

92% Recommend this product

Ratings may include incentivized customer reviews.

14 Customer Reviews

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It is an approved back flow preventer

Would Recommend

I have not used this yet but it looks to be well made and is approved for use by American Water Company.

Jim101June 24, 2026
Verified PurchaserIncentivized

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High quality part

Would Recommend

The delivery was late but the product was good overalls

Luis JJune 18, 2026
Verified PurchaserIncentivized

Was this Review Helpful ?

No issues product as described

Would Recommend

Had to replace my existing valve as it was leaking. Replacement seals were more expensive than replacing the whole unit. Super easy to swap out.

JoeNJune 4, 2026
Verified PurchaserIncentivized

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Watts builds a very dependable product

Would Recommend

This product is perfect for protecting premises and communities from possible water contamination.

JMT32May 22, 2026
Verified PurchaserIncentivized

Was this Review Helpful ?

Backflow Preventer

Would Recommend

I installed this on a yard hydrant line for my garden. It seems to be well made and good overall value.

RyanMay 5, 2026
Verified PurchaserIncentivized

Was this Review Helpful ?

Backflow Preventer

Would Recommend

I got this to replace my previous backflow preventer. Easy to install and seems to work fine.

Mike PMarch 1, 2026
Verified PurchaserIncentivized

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/ddeea4fa-fe63-5da1-8690-338b353963e2

Was this Review Helpful ?

Product great, service and ordering issues

Would Recommend

So far no issue with the product. 2 stars due to ordering the product was supposed to be there. When I went there it wasn't and them showed me that I couldn't have ordered it because it was grayed out and yet they looked me up by my order. They then said it was delayed and new ETA was few more days out. When that day came they cancelled my order. I called and asked why; they put me on hold for a while then I received a text stating my order is ready for pick up and then they told me it was ready...

Toenails1000February 11, 2026
Verified PurchaserIncentivized

Was this Review Helpful ?

Great item

Would Recommend

Item was a great fit for my sprinkler system backflow Plumber wanted $1200 I paid a little over $200 and 45min of my time

KyleJuly 25, 2025
Verified Purchaser

Was this Review Helpful ?

Response from WattsWater

Thank you for trusting Watts with all your home improvement needs!

WattsWaterOctober 17, 2025

Watts

great valve

Would Recommend

outstanding product. It has a freeze sensor. past the inspection with flying colors.

June 11, 2025
Verified Purchaser

Was this Review Helpful ?

Response from WattsWater

Thank you for trusting Watts with all your home improvement needs!

WattsWaterOctober 17, 2025

Watts

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COMPARE PRODUCTS

		Name	Current Item Watts1-in Bronze FNPT Double-check backflow preventer
		Ratings	14
		Inlet Diameter	1-in
		Maximum Pressure	175 PSI
		Outlet Diameter	1-in
Watts1-in Bronze FNPT Anti-siphon vacuum breaker	Watts3/4-in Copper FNPT Reduced pressure backflow preventer	Zurn Wilkins3/4-in Bronze FNPT Double-check backflow preventer	FEBCO1-in Bronze FNPT Pressure vacuum breaker	Watts1/2-Inch Lead Free Double Check Valve Backflow Preventer Assembly Quarter Turn Shutoff Single Top Entry Freeze Sensor	Watts3/4-Inch Lead Free Field Testable Hose Connection Backflow Preventer	Watts1-Inch Lead Free Anti-Siphon Vacuum Breaker Backflow Preventer	Watts3/4-Inch Lead Free Anti-Siphon Pressure Vacuum Breaker Backflow Preventer Quarter Turn Shutoff Tee Handles Freeze Sensor	Watts3/4-Inch Lead Free Anti-Siphon Vacuum Breaker Backflow Preventer Polished Chrome Finish
30	117		10
1-in	3/4-in	3/4-in	1-in	1/2-in	3/4-in	1-in	3/4-in	3/4-in
150 PSI	300 PSI	175 PSI	150 PSI	175 PSI	125 PSI	125 PSI	150 PSI	125 PSI
1-in	3/4-in	3/4-in	1-in	1/2-in	3/4-in	1-in	3/4-in	3/4-in