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Watts Dual Check Valve: LF7, 1 in Pipe Size, FNPT x FNPT, 3.88 in Overall Lg - Potable Water Dual Check Backflow Preventers
WattsPotable Water Dual Check Backflow Preventers

Watts Dual Check Valve: LF7, 1 in Pipe Size, FNPT x FNPT, 3.88 in Overall Lg

The WATTS LF7 is a potable water dual check backflow preventer constructed from copper silicon alloy. This model features a 1-inch pipe size with FNPT x FNPT connections and an overall length of 3.88 inches. It is…

SKU 3G-OTH-437189

Also listed as: 1LF7U22 · 1 LF7 U2 2 · 1-LF7-U2-2

Brand
Watts
Item
Dual Check Valve: LF7, 1 in Pipe Size, FNPT x FNPT, 3.88 in Overall Lg
Category
Potable Water Dual Check Backflow Preventers
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

Watts
Manufacturer Part Number
1 LF7 U2-2
Type
FNPT x FNPT, Copper Silicon Alloy
Overall Lg
3.88 in
Pipe Size
1 in
Connection Type
FNPT x FNPT

Technical Documents

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

Product Description

The WATTS LF7 is a potable water dual check backflow preventer constructed from copper silicon alloy. This model features a 1-inch pipe size with FNPT x FNPT connections and an overall length of 3.88 inches. It is designed to prevent backflow in potable water systems.

Frequently Asked Questions

What is the WATTS LF7 dual check valve used for?

The WATTS LF7 dual check valve is used to prevent backflow in potable water systems. It protects drinking water supplies from contamination caused by back-siphonage or back-pressure in residential, commercial, and industrial plumbing applications.

What are the specifications of the WATTS LF7 dual check valve?

The WATTS LF7 dual check valve has a 1-inch pipe size with FNPT x FNPT connections and an overall length of 3.88 inches. It is made from copper silicon alloy and is designed for potable water backflow prevention. The manufacturer part number is 1 LF7 U2-2.

Where to buy the WATTS LF7 dual check valve worldwide?

You can source the WATTS LF7 dual check valve through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring you receive genuine WATTS components for your backflow prevention needs.

How to install the WATTS LF7 dual check valve?

Install the WATTS LF7 dual check valve in a horizontal or vertical position with flow direction matching the arrow on the body. Use thread sealant on the FNPT connections and ensure the valve is accessible for testing and maintenance. Always follow local plumbing codes and manufacturer guidelines.

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 potable water dual 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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