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Watts Double Check Valve Assembly: LF709, 6 in Pipe Size, Flange x Flange, 62.94 in Overall Lg - Watts Double Check Backflow Preventers
WattsWatts Double Check Backflow Preventers

Watts Double Check Valve Assembly: LF709, 6 in Pipe Size, Flange x Flange, 62.94 in Overall Lg

The WATTS LF709 is a double check valve assembly from the Watts Double Check Backflow Preventers product line. This model features a 6-inch pipe size with flange x flange connections and an NRS gate valve shut-off…

SKU 3G-OTH-434587

Also listed as: LF709NRS · LF709 NRS

Brand
Watts
Item
Double Check Valve Assembly: LF709, 6 in Pipe Size, Flange x Flange, 62.94 in Overall Lg
Category
Watts Double Check Backflow Preventers
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

Watts
Manufacturer Part Number
LF709-NRS
Type
Flange x Flange, 709
Overall Lg
62.94 in
Pipe Size
6 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 is a double check valve assembly from the Watts Double Check Backflow Preventers product line. This model features a 6-inch pipe size with flange x flange connections and an NRS gate valve shut-off type. The assembly has an overall length of 62.94 inches and is identified by manufacturer part number LF709-NRS.

Frequently Asked Questions

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

The Watts LF709 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 potable water supplies where non-health-hazard cross-connections exist.

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

The Watts LF709 has a 6-inch pipe size with flange x flange connections and an NRS gate valve shut-off type. Its overall length is 62.94 inches, and the manufacturer part number is LF709-NRS. It is part of the Watts Double Check Backflow Preventers product line.

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

You can source the Watts LF709 double check valve assembly through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

How to install the Watts LF709 double check valve assembly?

Install the Watts LF709 in a horizontal or vertical position with adequate clearance for maintenance. Ensure flange gaskets are aligned and bolts are torqued evenly. Always follow local plumbing codes and the manufacturer's instructions for proper backflow prevention setup.

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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