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WATTS Vacuum Breaker: FNPT x FNPT, 1 1/4 in Pipe Size, For Water Media, Brass - Atmospheric Vacuum Breakers
WATTSAtmospheric Vacuum Breakers

WATTS Vacuum Breaker: FNPT x FNPT, 1 1/4 in Pipe Size, For Water Media, Brass

The WATTS Vacuum Breaker (MPN 1-1/4 188A) is an atmospheric vacuum breaker for water media, constructed of brass with FNPT x FNPT connections and a 1 1/4 in pipe size. It operates within a temperature range of 33°F…

SKU 3G-OTH-597071

Brand
WATTS
Item
Vacuum Breaker: FNPT x FNPT, 1 1/4 in Pipe Size, For Water Media, Brass
Category
Atmospheric Vacuum Breakers
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Technical Specifications

WATTS
Manufacturer Part Number
1-1/4 188A
Type
For Water Media, Brass, 33°F – 180°F, Female
Pipe Size
1 1/4 in
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WATTS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The WATTS Vacuum Breaker (MPN 1-1/4 188A) is an atmospheric vacuum breaker for water media, constructed of brass with FNPT x FNPT connections and a 1 1/4 in pipe size. It operates within a temperature range of 33°F to 180°F.

Frequently Asked Questions

What is a WATTS atmospheric vacuum breaker used for?

A WATTS atmospheric vacuum breaker prevents back-siphonage of contaminated water into potable water lines. It is used in irrigation, industrial process water, and plumbing systems where a cross-connection hazard exists, protecting water quality by venting air when pressure drops.

What are the specifications of the WATTS 1-1/4 188A vacuum breaker?

The WATTS 1-1/4 188A vacuum breaker has a 1 1/4 in FNPT x FNPT pipe size, brass construction, and operates from 33°F to 180°F for water media. It is an atmospheric type with female connections, designed for reliable backflow prevention in commercial and industrial applications.

Where to buy a WATTS vacuum breaker worldwide?

3G Electric supplies the WATTS vacuum breaker (MPN 1-1/4 188A) to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact our team for a quote and lead time on this brass atmospheric vacuum breaker for water systems.

How to install a WATTS atmospheric vacuum breaker?

Install the WATTS vacuum breaker vertically above the highest downstream outlet, with the vent facing down. Ensure no shutoff valve downstream and that the device is not subjected to continuous pressure. Follow local plumbing codes and the manufacturer's instructions for proper backflow prevention.

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.

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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.
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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 188A). Key specifications — attr1058597: WATTS; attr1096789: No.
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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 188A). Key specifications — attr1058597: WATTS; attr1096789: No.
WATTS Anti-Siphon Vacuum Breaker: FNPT x FNPT, 3/8 in Pipe Size, Polished Chrome, For Water Media (MPN LF288AC-3/8"). Key specifications — attr1058597: WATTS; attr1096789: No; attr1096794: NSF/ANSI 372.
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WATTS Anti-Siphon Vacuum Breaker: FNPT x FNPT, 3/8 in Pipe Size, Polished Chrome, For Water Media (MPN LF288AC-3/8"). Key specifications — attr1058597: WATTS; attr1096789: No; attr1096794: NSF/ANSI 372.
WATTS Anti-Siphon Vacuum Breaker: FNPT x FNPT, 3/8 in Pipe Size, For Water Media, Brass, Female, NPT (MPN LF288A-3/8"). Key specifications — attr1058597: WATTS; attr1096789: No; attr1096794: NSF/ANSI 372.
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WATTS Anti-Siphon Vacuum Breaker: FNPT x FNPT, 3/8 in Pipe Size, For Water Media, Brass, Female, NPT (MPN LF288A-3/8"). Key specifications — attr1058597: WATTS; attr1096789: No; attr1096794: NSF/ANSI 372.
WATTS Vacuum Breaker: FNPT x FNPT, 2 1/2 in Pipe Size, For Water Media, Brass, 33°F – 180°F, Female (MPN 2-1/2 LF288AM2). Key specifications — attr1058597: WATTS; attr1096789: No; attr1096794: NSF/ANSI 372.
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WATTS Vacuum Breaker: FNPT x FNPT, 2 1/2 in Pipe Size, For Water Media, Brass, 33°F – 180°F, Female (MPN 2-1/2 LF288AM2). Key specifications — attr1058597: WATTS; attr1096789: No; attr1096794: NSF/ANSI 372.
WATTS Anti-Siphon Vacuum Breaker: FNPT x FNPT, 1 in Pipe Size, For Water Media, Brass, 33°F – 180°F (MPN LF288A-1"). Key specifications — attr1058597: WATTS; attr1096789: No; attr1096794: NSF/ANSI 372.
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WATTS Anti-Siphon Vacuum Breaker: FNPT x FNPT, 1 in Pipe Size, For Water Media, Brass, 33°F – 180°F (MPN LF288A-1"). Key specifications — attr1058597: WATTS; attr1096789: No; attr1096794: NSF/ANSI 372.
WATTS Anti-Siphon Vacuum Breaker: FNPT x FNPT, 1/4 in Pipe Size, Polished Chrome, For Water Media (MPN LF288AC-1/4"). Key specifications — attr1058597: WATTS; attr1096789: No; attr1096794: NSF/ANSI 372.
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WATTS Anti-Siphon Vacuum Breaker: FNPT x FNPT, 1/4 in Pipe Size, Polished Chrome, For Water Media (MPN LF288AC-1/4"). Key specifications — attr1058597: WATTS; attr1096789: No; attr1096794: NSF/ANSI 372.
WATTS Atmospheric Vacuum Breaker: FNPT x FNPT, 3/8 in Pipe Size, Polished Chrome, For Water Media (MPN 3/8 LFN388-C). Key specifications — attr1058597: WATTS; attr1096789: No.
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WATTS Atmospheric Vacuum Breaker: FNPT x FNPT, 3/8 in Pipe Size, Polished Chrome, For Water Media (MPN 3/8 LFN388-C). Key specifications — attr1058597: WATTS; attr1096789: No.