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Watts LF719-QT-S Double Check Backflow Preventer, 3/4 in, FNPT x FNPT, Bronze - Watts Double Check Backflow Preventers
WattsWatts Double Check Backflow Preventers

Watts LF719-QT-S Double Check Backflow Preventer, 3/4 in, FNPT x FNPT, Bronze

The Watts LF719 is a double check valve assembly, part of the Watts Double Check Backflow Preventers product line. This model features a 3/4-inch pipe size with FNPT x FNPT connections and a ball valve shut-off…

SKU 3G-OTH-434565

Also listed as: LF719QTS · LF719 QT S

Brand
Watts
Item
LF719-QT-S Double Check Backflow Preventer, 3/4 in, FNPT x FNPT, Bronze
Part Number
LF719-QT-S
Category
Watts Double Check Backflow Preventers
Available to Order
Also known as:LF719-QT-SWatts
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Watts
Manufacturer Part Number
LF719-QT-S
Type
FNPT x FNPT, Bronze
Overall Lg
15.44 in
Pipe Size
3/4 in
Connection Type
FNPT x FNPT
Shut-Off Valve Type
Ball Valve

Technical Documents

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3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Watts LF719 is a double check valve assembly, part of the Watts Double Check Backflow Preventers product line. This model features a 3/4-inch pipe size with FNPT x FNPT connections and a ball valve shut-off valve, constructed from bronze. The manufacturer part number is LF719-QT-S.

Frequently Asked Questions

What is the Watts LF719 double check valve assembly used for?

The Watts LF719 double check valve assembly is used to prevent backflow in potable water systems. It is commonly installed in commercial and residential plumbing to protect drinking water from contamination due to backpressure or backsiphonage.

What are the specifications of the Watts LF719-QT-S?

The Watts LF719-QT-S is a bronze double check valve assembly with a 3/4-inch pipe size and FNPT x FNPT connections. It features a ball valve shut-off valve and has an overall length of 15.44 inches. The manufacturer part number is LF719-QT-S.

Where to buy the Watts LF719 double check valve assembly worldwide?

You can source the Watts LF719 double check valve assembly worldwide through 3G Electric. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this model.

How to install a Watts double check valve assembly?

Install the Watts double check valve assembly in a horizontal or vertical position with flow direction matching the arrow on the body. Ensure upstream and downstream shut-off valves are open. Test the assembly per local codes after installation to verify proper backflow prevention.

Used in

Common applications for Watts
Commercial plumbing – Watts standard capacity water pressure regulators (3/8 LF 26AB) for stabilizing incoming water pressure
Industrial steam systems – Watts 152A series steam pressure regulators for pressure reduction in process and heating lines
Cross-connection control – Watts 757 double check backflow preventers for commercial and industrial water supply protection
Boiler safety – Watts ASME Section XIII temperature and pressure relief valves for overpressure protection in heating systems
Hydronic heating – Watts CP16 pilot-operated pressure regulators for maintaining consistent pressure in steam or water loops
Water hammer mitigation – Watts LF15M2-A water hammer arrestors for absorbing surges in quick-closing valve applications
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Watts Products

3G Electric supplies Watts watts double check backflow preventers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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