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Watts Double Check Valve Assembly: LF709, 10 in Pipe Size, Flange x Flange, 90.44 in Overall Lg - Watts Double Check Backflow Preventers
WattsWatts Double Check Backflow Preventers

Watts Double Check Valve Assembly: LF709, 10 in Pipe Size, Flange x Flange, 90.44 in Overall Lg

The Watts LF709-NRS is a 10-inch double check valve assembly from the Watts Double Check Backflow Preventers product line. It features flange x flange connections and is equipped with NRS gate valve shut-off valves…

SKU 3G-OTH-434607

Also listed as: LF709NRS · LF709 NRS

Brand
Watts
Item
Double Check Valve Assembly: LF709, 10 in Pipe Size, Flange x Flange, 90.44 in Overall Lg
Category
Watts Double Check Backflow Preventers
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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
LF709-NRS
Type
Flange x Flange, 709
Overall Lg
90.44 in
Pipe Size
10 in
Connection Type
Flange x Flange
Shut-Off Valve Type
NRS Gate Valve

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Watts Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Watts LF709-NRS is a 10-inch double check valve assembly from the Watts Double Check Backflow Preventers product line. It features flange x flange connections and is equipped with NRS gate valve shut-off valves. This assembly has an overall length of 90.44 inches.

Frequently Asked Questions

What is the Watts LF709-NRS double check valve assembly used for?

The Watts LF709-NRS is a 10-inch double check valve assembly used in commercial and industrial backflow prevention systems. It protects potable water supplies from contamination by preventing reverse flow in high-hazard cross-connections, typically in fire sprinkler, irrigation, and process water lines.

What are the specifications of the Watts LF709-NRS double check valve assembly?

The Watts LF709-NRS has a 10-inch pipe size, flange x flange connections, and an overall length of 90.44 inches. It features NRS gate valve shut-off valves and is part of the Watts 709 series double check backflow preventers. The manufacturer part number is LF709-NRS.

Where to buy the Watts LF709-NRS double check valve assembly worldwide?

3G Electric supplies the Watts LF709-NRS 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 10-inch flange x flange backflow preventer.

How to install the Watts LF709-NRS double check valve assembly?

Install the Watts LF709-NRS in a horizontal or vertical orientation with adequate clearance for servicing. Ensure flange gaskets are properly aligned and bolts torqued to manufacturer specifications. Always install downstream of the shut-off valve and test per local backflow prevention codes after installation.

Used in

Common applications for Watts
Industrial burner gas safety systems — Watts HF2000 filters with GF-series seal kits maintain clean, regulated gas supply to burner pilot and main flame controls
Commercial heating and boiler installations — Modular filter assemblies support preventive maintenance and component replacement without full system shutdown
Process gas delivery pipelines — DN25 through DN125 filter bodies accommodate varying flow rates and inlet pressures across manufacturing and chemical processes
Gas pressure regulation benches — Multi-stage Watts filter platforms integrate with pressure reducers and safety shutoff valves in test and calibration environments
Equipment retrofit and upgrade projects — Available connection sizes and seal kits enable adaptation of newer Watts components into legacy gas control systems
Planned maintenance and spare-parts inventory — Filter seal kits allow facilities to stock consumables in advance, reducing downtime during scheduled gas system servicing

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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