Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
Watts Dual Check Vacuum Breaker: LFN9-CD, 3/4 in Pipe Size, FGHT x MGHT, 5 gpm Flow Rate - Potable Water Dual Check Backflow Preventers
WattsPotable Water Dual Check Backflow Preventers

Watts Dual Check Vacuum Breaker: LFN9-CD, 3/4 in Pipe Size, FGHT x MGHT, 5 gpm Flow Rate

The WATTS LFN9-CD is a potable water dual check vacuum breaker, a type of backflow preventer. This model features a 3/4-inch pipe size with FGHT x MGHT connections and a 5 gpm flow rate, constructed from brass. It is…

SKU 3G-OTH-437176

Brand
Watts
Item
Dual Check Vacuum Breaker: LFN9-CD, 3/4 in Pipe Size, FGHT x MGHT, 5 gpm Flow Rate
Category
Potable Water Dual Check Backflow Preventers
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

Watts
Manufacturer Part Number
LFN9CD
Type
FGHT x MGHT, Brass, GHT
Pipe Size
3/4 in
Flow Rate
5 gpm
Connection Type
FGHT x MGHT
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The WATTS LFN9-CD is a potable water dual check vacuum breaker, a type of backflow preventer. This model features a 3/4-inch pipe size with FGHT x MGHT connections and a 5 gpm flow rate, constructed from brass. It is identified by manufacturer part number LFN9CD.

Frequently Asked Questions

What is a WATTS LFN9-CD dual check vacuum breaker used for?

The WATTS LFN9-CD is a potable water backflow preventer that stops contaminated water from flowing backward into clean supply lines. It is commonly installed on outdoor hose bibs or irrigation systems to protect drinking water from cross-connections.

What are the specifications of the WATTS LFN9-CD?

The WATTS LFN9-CD has a 3/4 in pipe size, FGHT x MGHT connections, a 5 gpm flow rate, and a brass body. It is a dual check vacuum breaker designed for potable water systems. The manufacturer part number is LFN9CD.

Where to buy a WATTS LFN9-CD worldwide?

3G Electric supplies the WATTS LFN9-CD dual check vacuum breaker to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this backflow preventer.

How to install a WATTS LFN9-CD dual check vacuum breaker?

Install the WATTS LFN9-CD vertically on a potable water line with the flow arrow pointing upward. Use thread sealant on the FGHT x MGHT connections and tighten to manufacturer torque specs. Always test for backflow prevention after installation per local codes.

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
WATTS Dual Check Valve: LF7, 3/8 in Pipe Size, FNPT x FNPT, 10 gpm Flow Rate, 2.88 in Overall Lg (MPN 3/8 LF7). Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
Watts
WATTS Dual Check Valve: LF7, 3/8 in Pipe Size, FNPT x FNPT, 10 gpm Flow Rate, 2.88 in Overall Lg (MPN 3/8 LF7). Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
WATTS Dual Check Valve: LF7, 1 in Pipe Size, FNPT x FNPT, 3.88 in Overall Lg, Copper Silicon Alloy (MPN 1 LF7 U2-2). Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
Watts
WATTS Dual Check Valve: LF7, 1 in Pipe Size, FNPT x FNPT, 3.88 in Overall Lg, Copper Silicon Alloy (MPN 1 LF7 U2-2). Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
WATTS Backflow Preventer: LFN9, 1/2 in Pipe Size, FNPT x FNPT, 7 gpm Flow Rate, 2.38 in Overall Lg (MPN 1/2 LFN9-C). Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
Watts
WATTS Backflow Preventer: LFN9, 1/2 in Pipe Size, FNPT x FNPT, 7 gpm Flow Rate, 2.38 in Overall Lg (MPN 1/2 LFN9-C). Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
WATTS Dual Check with Atmospheric Vent: 9BD, 1/4 in Pipe Size, MNPT x MNPT, 2.5 gpm Flow Rate, Male. Key specifications — Brand: WATTS; Connection Type: MNPT x MNPT.
Watts
WATTS Dual Check with Atmospheric Vent: 9BD, 1/4 in Pipe Size, MNPT x MNPT, 2.5 gpm Flow Rate, Male. Key specifications — Brand: WATTS; Connection Type: MNPT x MNPT.
WATTS Backflow Preventer: LF7R, 1 in Pipe Size, FNPT x MNPT, 26 gpm Flow Rate, 1 in Overall Lg, EPDM (MPN 1X3/4 LF7RU4-3). Key specifications — Brand: WATTS; Connection Type: FNPT x MNPT.
Watts
WATTS Backflow Preventer: LF7R, 1 in Pipe Size, FNPT x MNPT, 26 gpm Flow Rate, 1 in Overall Lg, EPDM (MPN 1X3/4 LF7RU4-3). Key specifications — Brand: WATTS; Connection Type: FNPT x MNPT.
WATTS Dual Check with Atmospheric Vent: 9BD, 3/8 in Pipe Size, MNPT x MNPT, 2.5 gpm Flow Rate, Male. Key specifications — Brand: WATTS; Connection Type: MNPT x MNPT.
Watts
WATTS Dual Check with Atmospheric Vent: 9BD, 3/8 in Pipe Size, MNPT x MNPT, 2.5 gpm Flow Rate, Male. Key specifications — Brand: WATTS; Connection Type: MNPT x MNPT.

More from Watts

View all Watts parts →
WATTS Backflow Preventer: LF7R, 1 in Pipe Size, Female Meter Swivel x Union FNPT, 26 gpm Flow Rate (MPN 1X3/4 LF7R10-U2). Key specifications — Brand: WATTS; Connection Type: Female Meter Swivel x Union FNPT.
Watts
WATTS Backflow Preventer: LF7R, 1 in Pipe Size, Female Meter Swivel x Union FNPT, 26 gpm Flow Rate (MPN 1X3/4 LF7R10-U2). Key specifications — Brand: WATTS; Connection Type: Female Meter Swivel x Union FNPT.
WATTS Backflow Preventer: LF7, 1 1/4 in Pipe Size, Male Meter Swivel x FNPT, 33 gpm Flow Rate, Male (MPN 1-1/4X1 LF7 10-U2). Key specifications — Brand: WATTS; Connection Type: Male Meter Swivel x FNPT.
Watts
WATTS Backflow Preventer: LF7, 1 1/4 in Pipe Size, Male Meter Swivel x FNPT, 33 gpm Flow Rate, Male (MPN 1-1/4X1 LF7 10-U2). Key specifications — Brand: WATTS; Connection Type: Male Meter Swivel x FNPT.
WATTS Dual Check Vacuum Breaker: LFN9, 3/8 in Pipe Size, FNPT x FNPT, 7 gpm Flow Rate, Brass, Female (MPN 3/8 LF N9C - 3/8"). Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
Watts
WATTS Dual Check Vacuum Breaker: LFN9, 3/8 in Pipe Size, FNPT x FNPT, 7 gpm Flow Rate, Brass, Female (MPN 3/8 LF N9C - 3/8"). Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
WATTS Backflow Preventer: LF7R, 1 in Pipe Size, Female Meter Swivel x Union MNPT, 26 gpm Flow Rate (MPN 1X3/4 LF7R10-U3). Key specifications — Brand: WATTS; Connection Type: Female Meter Swivel x Union MNPT.
Watts
WATTS Backflow Preventer: LF7R, 1 in Pipe Size, Female Meter Swivel x Union MNPT, 26 gpm Flow Rate (MPN 1X3/4 LF7R10-U3). Key specifications — Brand: WATTS; Connection Type: Female Meter Swivel x Union MNPT.
WATTS Dual Check Valve: LF7, 3/4 in Pipe Size, FNPT x FNPT, 3.63 in Overall Lg, Copper Silicon Alloy (MPN 3/4 LF7 U2-2). Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
Watts
WATTS Dual Check Valve: LF7, 3/4 in Pipe Size, FNPT x FNPT, 3.63 in Overall Lg, Copper Silicon Alloy (MPN 3/4 LF7 U2-2). Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
WATTS Dual Check Valve: LF7R, 1/2 in Pipe Size, FNPT x FNPT, 15.5 gpm Flow Rate, 3.63 in Overall Lg (MPN LF7RU2-2). Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
Watts
WATTS Dual Check Valve: LF7R, 1/2 in Pipe Size, FNPT x FNPT, 15.5 gpm Flow Rate, 3.63 in Overall Lg (MPN LF7RU2-2). Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
WATTS Backflow Preventer: LF7R, 1 in Pipe Size, Female Meter Swivel x Union FNPT, 26 gpm Flow Rate (MPN 1X1 LF7R10-U2). Key specifications — Brand: WATTS; Connection Type: Female Meter Swivel x Union FNPT.
Watts
WATTS Backflow Preventer: LF7R, 1 in Pipe Size, Female Meter Swivel x Union FNPT, 26 gpm Flow Rate (MPN 1X1 LF7R10-U2). Key specifications — Brand: WATTS; Connection Type: Female Meter Swivel x Union FNPT.
WATTS Backflow Preventer: LF7R, 3/4 in Pipe Size, True Union FNPT, 15.5 gpm Flow Rate, Brass, EPDM (MPN 3/4X3/4 LF7RU2-U2). Key specifications — Brand: WATTS; Connection Type: True Union FNPT.
Watts
WATTS Backflow Preventer: LF7R, 3/4 in Pipe Size, True Union FNPT, 15.5 gpm Flow Rate, Brass, EPDM (MPN 3/4X3/4 LF7RU2-U2). Key specifications — Brand: WATTS; Connection Type: True Union FNPT.