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 Anti-Siphon Vacuum Breaker: FNPT x FNPT, 1/2 in Pipe Size, Polished Chrome - Atmospheric Vacuum Breakers
WATTSAtmospheric Vacuum Breakers

WATTS Anti-Siphon Vacuum Breaker: FNPT x FNPT, 1/2 in Pipe Size, Polished Chrome

The WATTS Anti-Siphon Vacuum Breaker (MPN LF288AC-1/2") is an atmospheric vacuum breaker with FNPT x FNPT connections, a 1/2 in pipe size, polished chrome finish, and is designed for water media. It is certified to…

SKU 3G-OTH-597030

Brand
WATTS
Item
Anti-Siphon Vacuum Breaker: FNPT x FNPT, 1/2 in Pipe Size, Polished Chrome
Category
Atmospheric Vacuum Breakers
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
LF288AC-1/2"
Type
Polished Chrome, For Water Media
Pipe Size
1/2 in
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 Anti-Siphon Vacuum Breaker (MPN LF288AC-1/2") is an atmospheric vacuum breaker with FNPT x FNPT connections, a 1/2 in pipe size, polished chrome finish, and is designed for water media. It is certified to NSF/ANSI 372.

Frequently Asked Questions

What is a WATTS anti-siphon vacuum breaker used for?

A WATTS anti-siphon vacuum breaker prevents backflow of contaminated water into potable supply lines. It is installed on outdoor faucets or irrigation systems to protect drinking water from pollutants. This model, LF288AC-1/2", is designed for water media and certified to NSF/ANSI 372.

What are the specifications of the WATTS LF288AC-1/2" vacuum breaker?

The WATTS LF288AC-1/2" is an atmospheric vacuum breaker with FNPT x FNPT connections, 1/2 in pipe size, polished chrome finish, and is designed for water media. It is certified to NSF/ANSI 372 and carries the WATTS brand. The manufacturer part number is LF288AC-1/2".

Where to buy a WATTS anti-siphon vacuum breaker worldwide?

3G Electric supplies the WATTS LF288AC-1/2" anti-siphon vacuum breaker to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us to order this NSF/ANSI 372 certified vacuum breaker for your backflow prevention needs.

How to install a WATTS atmospheric vacuum breaker?

Install the WATTS LF288AC-1/2" vacuum breaker at least 6 inches above the highest downstream outlet to ensure proper atmospheric venting. Use PTFE tape on the FNPT threads and tighten by hand plus a quarter turn. Always install with the flow arrow pointing downstream and test annually 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 atmospheric vacuum breakers. 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 →

More from WATTS

View all WATTS parts →
WATTS Vacuum Breaker: FNPT x FNPT, 3/4 in Pipe Size, For Water Media, Brass, 33°F – 180°F, Female (MPN 3/4 188A). Key specifications — attr1058597: WATTS; attr1096789: No.
WATTS
WATTS Vacuum Breaker: FNPT x FNPT, 3/4 in Pipe Size, For Water Media, Brass, 33°F – 180°F, Female (MPN 3/4 188A). Key specifications — attr1058597: WATTS; attr1096789: No.
WATTS Atmospheric Vacuum Breaker: FNPT x FNPT, 1/4 in Pipe Size, Polished Chrome, For Water Media (MPN 1/4 LFN388-C). Key specifications — attr1058597: WATTS; attr1096789: No.
WATTS
WATTS Atmospheric Vacuum Breaker: FNPT x FNPT, 1/4 in Pipe Size, Polished Chrome, For Water Media (MPN 1/4 LFN388-C). Key specifications — attr1058597: WATTS; attr1096789: No.
WATTS Anti-Siphon Vacuum Breaker: FNPT x FNPT, 1/4 in Pipe Size, For Water Media, Brass, Female, NPT (MPN LF288A-1/4"). Key specifications — attr1058597: WATTS; attr1096789: No; attr1096794: NSF/ANSI 372.
WATTS
WATTS Anti-Siphon Vacuum Breaker: FNPT x FNPT, 1/4 in Pipe Size, For Water Media, Brass, Female, NPT (MPN LF288A-1/4"). Key specifications — attr1058597: WATTS; attr1096789: No; attr1096794: NSF/ANSI 372.
WATTS Spill Resistant Vacuum Breaker: MNPT x MNPT, 3/4 in Pipe Size, For Water Media, Brass, Male (MPN LF289-3/4"). Key specifications — attr1058597: WATTS; attr1096789: No.
WATTS
WATTS Spill Resistant Vacuum Breaker: MNPT x MNPT, 3/4 in Pipe Size, For Water Media, Brass, Male (MPN LF289-3/4"). Key specifications — attr1058597: WATTS; attr1096789: No.
WATTS Vacuum Breaker: FNPT x FNPT, 2 in Pipe Size, For Water Media, Brass, 33°F – 180°F, Female, NPT (MPN 2 188A). Key specifications — attr1058597: WATTS; attr1096789: No.
WATTS
WATTS Vacuum Breaker: FNPT x FNPT, 2 in Pipe Size, For Water Media, Brass, 33°F – 180°F, Female, NPT (MPN 2 188A). Key specifications — attr1058597: WATTS; attr1096789: No.
WATTS Vacuum Breaker: FNPT x FNPT, 1 in Pipe Size, For Water Media, Brass, 33°F – 180°F, Female, NPT (MPN 1 188A). Key specifications — attr1058597: WATTS; attr1096789: No.
WATTS
WATTS Vacuum Breaker: FNPT x FNPT, 1 in Pipe Size, For Water Media, Brass, 33°F – 180°F, Female, NPT (MPN 1 188A). Key specifications — attr1058597: WATTS; attr1096789: No.
WATTS Vacuum Breaker: FNPT x FNPT, 2 in Pipe Size, For Water Media, Brass, 33°F – 180°F, Female, NPT (MPN 2 LF288AM2). Key specifications — attr1058597: WATTS; attr1096789: No; attr1096794: NSF/ANSI 372.
WATTS
WATTS Vacuum Breaker: FNPT x FNPT, 2 in Pipe Size, For Water Media, Brass, 33°F – 180°F, Female, NPT (MPN 2 LF288AM2). Key specifications — attr1058597: WATTS; attr1096789: No; attr1096794: NSF/ANSI 372.
WATTS Vacuum Breaker: FNPT x FNPT, 1 1/2 in Pipe Size, For Water Media, Brass, 33°F – 180°F, Female (MPN 1-1/2 LF288AM2). Key specifications — attr1058597: WATTS; attr1096789: No; attr1096794: NSF/ANSI 372.
WATTS
WATTS Vacuum Breaker: FNPT x FNPT, 1 1/2 in Pipe Size, For Water Media, Brass, 33°F – 180°F, Female (MPN 1-1/2 LF288AM2). Key specifications — attr1058597: WATTS; attr1096789: No; attr1096794: NSF/ANSI 372.