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Watts 1-1/2 LF800M4-FR Lead-Free Pressure Vacuum Breaker, FIP x FIP - Lead-Free Pressure Vacuum Breakers
WattsLead-Free Pressure Vacuum Breakers

Watts 1-1/2 LF800M4-FR Lead-Free Pressure Vacuum Breaker, FIP x FIP

The WATTS 1 1/2 LF800M4-FR is a lead-free pressure vacuum breaker designed for water media in high health hazard applications. This unit features FIP x FIP connections and is rated for operating temperatures from…

SKU 3G-OTH-446164

Also listed as: 112LF800M4FR · 1 1 2 LF800M4 FR · 1-1-2-LF800M4-FR

Brand
Watts
Item
1-1/2 LF800M4-FR Lead-Free Pressure Vacuum Breaker, FIP x FIP
Part Number
1-1/2 LF800M4-FR
Category
Lead-Free Pressure Vacuum Breakers
Available to Order
Also known as:1-1/2 LF800M4-FRWatts
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Technical Specifications

Watts
Manufacturer Part Number
1-1/2 LF800M4-FR
Type
FIP x FIP, For Water Media, 33°F – 140°F, High Health Hazard
Connection Type
FIP x FIP

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3G Electric (S) Pte. Ltd. — Singapore

Product Description

The WATTS 1 1/2 LF800M4-FR is a lead-free pressure vacuum breaker designed for water media in high health hazard applications. This unit features FIP x FIP connections and is rated for operating temperatures from 33°F to 140°F. The Watts-branded assembly is identified by manufacturer part number 1-1/2 LF800M4-FR.

Frequently Asked Questions

What is the WATTS 1 1/2 LF800M4-FR vacuum breaker used for?

The WATTS 1 1/2 LF800M4-FR is a lead-free pressure vacuum breaker used to prevent backflow of water in high health hazard applications. It is suitable for water media and operates between 33°F and 140°F, commonly installed in commercial or industrial plumbing systems to protect potable water supplies.

What are the specifications of the WATTS 1 1/2 LF800M4-FR?

The WATTS 1 1/2 LF800M4-FR has FIP x FIP connections, a 1 1/2-inch size, and is rated for water media from 33°F to 140°F. It is a lead-free pressure vacuum breaker designed for high health hazard backflow prevention. The manufacturer part number is 1-1/2 LF800M4-FR.

Where to buy the WATTS 1 1/2 LF800M4-FR worldwide?

You can source the WATTS 1 1/2 LF800M4-FR 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 on this Watts vacuum breaker.

How to install a WATTS pressure vacuum breaker like the LF800M4-FR?

Install the WATTS LF800M4-FR in an accessible location above the highest downstream outlet to ensure proper drainage. Use thread sealant on FIP connections and test for leaks after installation. Follow local plumbing codes and the manufacturer's instructions for backflow preventers to ensure safe operation.

Used in

Common applications for Watts
Commercial plumbing – Watts standard capacity water pressure regulators (3/8 LF 26AB) for stabilizing incoming water pressure
Industrial steam systems – Watts 152A series steam pressure regulators for pressure reduction in process and heating lines
Cross-connection control – Watts 757 double check backflow preventers for commercial and industrial water supply protection
Boiler safety – Watts ASME Section XIII temperature and pressure relief valves for overpressure protection in heating systems
Hydronic heating – Watts CP16 pilot-operated pressure regulators for maintaining consistent pressure in steam or water loops
Water hammer mitigation – Watts LF15M2-A water hammer arrestors for absorbing surges in quick-closing valve applications
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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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