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Watts Vacuum Breaker: 1/2 LF800M4-QT, FNPT x FNPT, For Water Media, 33°F – 140°F - Lead-Free Pressure Vacuum Breakers
WattsLead-Free Pressure Vacuum Breakers

Watts Vacuum Breaker: 1/2 LF800M4-QT, FNPT x FNPT, For Water Media, 33°F – 140°F

The WATTS 1/2 LF800M4-QT is a lead-free pressure vacuum breaker designed for water media in high health hazard applications. It features FNPT x FNPT connections and operates within a temperature range of 33°F to 140°F.

SKU 3G-OTH-446147

Brand
Watts
Item
Vacuum Breaker: 1/2 LF800M4-QT, FNPT x FNPT, For Water Media, 33°F – 140°F
Category
Lead-Free Pressure Vacuum Breakers
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Technical Specifications

Watts
Manufacturer Part Number
1/2 LF800M4-QT
Type
FNPT x FNPT, For Water Media, 33°F – 140°F, High Health Hazard
Connection Type
FNPT x FNPT
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Watts Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The WATTS 1/2 LF800M4-QT is a lead-free pressure vacuum breaker designed for water media in high health hazard applications. It features FNPT x FNPT connections and operates within a temperature range of 33°F to 140°F.

Frequently Asked Questions

What is a WATTS 1/2 LF800M4-QT vacuum breaker used for?

The WATTS 1/2 LF800M4-QT is a lead-free pressure vacuum breaker used to prevent backflow of contaminated water in high health hazard applications. It protects potable water systems in industrial, commercial, and irrigation settings where cross-connection risks exist.

What are the specifications of the WATTS LF800M4-QT?

The WATTS LF800M4-QT has FNPT x FNPT connections, a 1/2-inch size, and operates with water media from 33°F to 140°F. It is rated for high health hazard applications and is lead-free, meeting safe drinking water requirements.

Where to buy a WATTS 1/2 LF800M4-QT worldwide?

3G Electric supplies the WATTS 1/2 LF800M4-QT vacuum breaker to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this lead-free pressure vacuum breaker.

How to install a WATTS pressure vacuum breaker?

Install the WATTS pressure vacuum breaker in a vertical position with the inlet and outlet connected via FNPT fittings. Ensure the unit is at least 12 inches above the highest downstream outlet. Follow local plumbing codes and test for proper backflow prevention after installation.

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 lead-free pressure 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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