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Watts Backflow Preventer: LFN9, 1/2 in Pipe Size, FNPT x FNPT, 7 gpm Flow Rate - Potable Water Dual Check Backflow Preventers
WattsPotable Water Dual Check Backflow Preventers

Watts Backflow Preventer: LFN9, 1/2 in Pipe Size, FNPT x FNPT, 7 gpm Flow Rate

The WATTS LFN9 is a potable water dual check backflow preventer with a 1/2 in pipe size and FNPT x FNPT connections. It has a flow rate of 7 gpm and an overall length of 2.38 in, as specified by the manufacturer part…

SKU 3G-OTH-437172

Also listed as: 12LFN9C · 1 2 LFN9 C · 1-2-LFN9-C

Brand
Watts
Item
Backflow Preventer: LFN9, 1/2 in Pipe Size, FNPT x FNPT, 7 gpm Flow Rate
Category
Potable Water Dual Check Backflow Preventers
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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
1/2 LFN9-C
Type
FNPT x FNPT
Overall Lg
2.38 in
Pipe Size
1/2 in
Flow Rate
7 gpm
Connection Type
FNPT x FNPT

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

Product Description

The WATTS LFN9 is a potable water dual check backflow preventer with a 1/2 in pipe size and FNPT x FNPT connections. It has a flow rate of 7 gpm and an overall length of 2.38 in, as specified by the manufacturer part number 1/2 LFN9-C.

Frequently Asked Questions

What is the WATTS LFN9 backflow preventer used for?

The WATTS LFN9 is a potable water dual check backflow preventer designed to protect drinking water supplies from contamination caused by backflow. It is commonly installed in residential and commercial plumbing systems at cross-connections, such as irrigation lines or boiler feed lines, to meet local code requirements.

What are the specifications of the WATTS LFN9 backflow preventer?

The WATTS LFN9 has a 1/2 in pipe size with FNPT x FNPT connections, a flow rate of 7 gpm, and an overall length of 2.38 in. It is a potable water dual check backflow preventer, manufactured by WATTS under part number 1/2 LFN9-C. These specs ensure reliable backflow prevention in standard plumbing systems.

Where to buy the WATTS LFN9 backflow preventer worldwide?

You can source the WATTS LFN9 backflow preventer 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; we provide the genuine WATTS product with part number 1/2 LFN9-C.

How to install the WATTS LFN9 backflow preventer?

Install the WATTS LFN9 in a horizontal or vertical position with flow arrow pointing downstream. Use thread sealant on the FNPT connections and ensure no debris enters the valve. Test the dual check assembly after installation per local codes. Always follow WATTS installation instructions for proper backflow prevention performance.

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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