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Watts LF719-QT-S Double Check Backflow Preventer, 1 1/2 in, FIP x FIP, Bronze - Watts Double Check Backflow Preventers
WattsWatts Double Check Backflow Preventers

Watts LF719-QT-S Double Check Backflow Preventer, 1 1/2 in, FIP x FIP, Bronze

The Watts LF719 is a double check valve assembly, part of the Watts Double Check Backflow Preventers product line. This model features a 1 1/2 inch pipe size with FIP x FIP connections and a ball valve shut-off valve…

SKU 3G-OTH-434571

Also listed as: LF719QTS · LF719 QT S

Brand
Watts
Item
LF719-QT-S Double Check Backflow Preventer, 1 1/2 in, FIP x FIP, 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
FIP x FIP, Bronze
Overall Lg
25.25 in
Pipe Size
1 1/2 in
Connection Type
FIP x FIP
Shut-Off Valve Type
Ball Valve

Technical Documents

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Watts Products
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 1 1/2 inch pipe size with FIP x FIP connections and a ball valve shut-off valve type. The assembly is constructed from bronze and has an overall length of 25.25 inches, identified by manufacturer part number LF719-QT-S.

Frequently Asked Questions

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

The Watts LF719 double check valve assembly prevents backflow of contaminated water into potable water supplies. It is used in commercial and industrial plumbing systems, irrigation, and fire protection where a non-hazardous cross-connection exists, ensuring safe water flow direction.

What are the specifications of the Watts LF719 double check valve assembly?

The Watts LF719 has a 1 1/2 in pipe size with FIP x FIP connections, a ball valve shut-off type, and an overall length of 25.25 in. It is constructed from bronze and carries manufacturer part number LF719-QT-S. These specs ensure compatibility with standard piping systems.

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

3G Electric supplies the Watts LF719 double check valve assembly worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this bronze backflow preventer.

How to install the Watts LF719 double check valve assembly?

Install the Watts LF719 in a horizontal or vertical position with flow arrow pointing downstream. Ensure proper support for the 25.25 in bronze assembly. Use thread sealant on FIP connections and test per local codes after installation. Always consult a licensed plumber for backflow prevention systems.

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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