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Watts Double Check Valve Assembly: LF709, 3 in Pipe Size, Flange x Flange, 40.44 in Overall Lg - Watts Double Check Backflow Preventers
WattsWatts Double Check Backflow Preventers

Watts Double Check Valve Assembly: LF709, 3 in Pipe Size, Flange x Flange, 40.44 in Overall Lg

The Watts LF709-NRS is a 3-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-434580

Also listed as: LF709NRS · LF709 NRS

Brand
Watts
Item
Double Check Valve Assembly: LF709, 3 in Pipe Size, Flange x Flange, 40.44 in Overall Lg
Category
Watts Double Check Backflow Preventers
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

Watts
Manufacturer Part Number
LF709-NRS
Type
Flange x Flange, 709
Overall Lg
40.44 in
Pipe Size
3 in
Connection Type
Flange x Flange
Shut-Off Valve Type
NRS Gate Valve

Technical Documents

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

Product Description

The Watts LF709-NRS is a 3-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 40.44 inches.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

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

The Watts LF709-NRS double check valve assembly is used in commercial and industrial water systems to prevent backflow contamination. It is commonly installed in fire sprinkler systems, irrigation lines, and process water applications where non-potable water must not reverse into the potable supply.

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

The Watts LF709-NRS has a 3-inch pipe size with flange x flange connections. It includes NRS gate valve shut-off valves and has an overall length of 40.44 inches. The manufacturer part number is LF709-NRS, and it is part of the Watts Double Check Backflow Preventers product line.

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 equipment distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on this Watts backflow preventer.

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

Install the Watts LF709-NRS in a horizontal or vertical position with flow arrow pointing downstream. Ensure flange gaskets are properly aligned and bolts are torqued evenly. Always install test cocks and shut-off valves per local plumbing codes. Consult the Watts installation manual for specific torque values.

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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