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Watts 3/4 LF800M4-QT-FZ Lead-Free Pressure Vacuum Breaker, FNPT x FNPT - Lead-Free Pressure Vacuum Breakers
WattsLead-Free Pressure Vacuum Breakers

Watts 3/4 LF800M4-QT-FZ Lead-Free Pressure Vacuum Breaker, FNPT x FNPT

The WATTS Anti-Siphon Backflow Preventer, model 3/4 LF800M4-QT-FZ, is a lead-free pressure vacuum breaker designed for water media. It features FNPT x FNPT connections and operates within a temperature range of 33°F…

SKU 3G-OTH-446150

Also listed as: 34LF800M4QTFZ · 3 4 LF800M4 QT FZ · 3-4-LF800M4-QT-FZ

Brand
Watts
Item
3/4 LF800M4-QT-FZ Lead-Free Pressure Vacuum Breaker, FNPT x FNPT
Category
Lead-Free Pressure Vacuum Breakers
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

Watts
Manufacturer Part Number
3/4 LF800M4-QT-FZ
Type
FNPT x FNPT, For Water Media, 33°F – 140°F
Connection Type
FNPT x FNPT

Technical Documents

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

Product Description

The WATTS Anti-Siphon Backflow Preventer, model 3/4 LF800M4-QT-FZ, is a lead-free pressure vacuum breaker designed for water media. It features FNPT x FNPT connections and operates within a temperature range of 33°F to 140°F.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the WATTS 3/4 LF800M4-QT-FZ anti-siphon backflow preventer used for?

The WATTS 3/4 LF800M4-QT-FZ is a lead-free pressure vacuum breaker that prevents backflow of contaminated water into potable water lines. It is used in commercial and residential irrigation, industrial process water, and plumbing systems where anti-siphon protection is required.

What are the specifications of the WATTS LF800M4-QT-FZ backflow preventer?

The WATTS LF800M4-QT-FZ is a 3/4-inch lead-free pressure vacuum breaker with FNPT x FNPT connections. It is rated for water media and operates within a temperature range of 33°F to 140°F. The manufacturer part number is 3/4 LF800M4-QT-FZ.

Where to buy the WATTS LF800M4-QT-FZ backflow preventer worldwide?

3G Electric supplies the WATTS LF800M4-QT-FZ backflow preventer to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this lead-free pressure vacuum breaker.

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

Install the WATTS LF800M4-QT-FZ in an accessible location at least 12 inches above the highest downstream outlet. Ensure FNPT connections are properly sealed with thread tape. Follow local plumbing codes and the manufacturer's instructions for orientation and testing to maintain backflow protection.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
This pressure vacuum breaker is designed for water media to prevent backflow in plumbing systems. It features FNPT x FNPT connections and operates within a temperature range of 33°F to 140°F. Suitable for use in irrigation and other water supply applications where backflow prevention is required
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This pressure vacuum breaker is designed for water media to prevent backflow in plumbing systems. It features FNPT x FNPT connections and operates within a temperature range of 33°F to 140°F. Suitable for use in irrigation and other water supply applications where backflow prevention is required
This lead-free pressure vacuum breaker is designed for water media to prevent back-siphonage in plumbing systems. It features FNPT x FNPT connections and a bronze body with NPT threading. Suitable for commercial and residential applications where backflow protection is required
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This lead-free pressure vacuum breaker is designed for water media to prevent back-siphonage in plumbing systems. It features FNPT x FNPT connections and a bronze body with NPT threading. Suitable for commercial and residential applications where backflow protection is required
This lead-free pressure vacuum breaker is constructed of bronze with NPT threads and features FNPT x FNPT connections. It is designed for water media to prevent backflow in plumbing systems. Commonly used in irrigation and residential or commercial water supply lines
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This lead-free pressure vacuum breaker is constructed of bronze with NPT threads and features FNPT x FNPT connections. It is designed for water media to prevent backflow in plumbing systems. Commonly used in irrigation and residential or commercial water supply lines
Lead-free pressure vacuum breaker for water media in high health hazard applications. FNPT x FNPT connections. Temperature range 33°F – 140°F. Used in commercial and industrial plumbing systems to prevent backflow and protect potable water supplies
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Lead-free pressure vacuum breaker for water media in high health hazard applications. FNPT x FNPT connections. Temperature range 33°F – 140°F. Used in commercial and industrial plumbing systems to prevent backflow and protect potable water supplies
This pressure vacuum breaker is designed for water media to prevent backflow in potable water systems. It features FNPT x FNPT connections and operates within a temperature range of 33°F to 140°F. Typical applications include irrigation and commercial plumbing systems where backflow prevention is required
Watts
This pressure vacuum breaker is designed for water media to prevent backflow in potable water systems. It features FNPT x FNPT connections and operates within a temperature range of 33°F to 140°F. Typical applications include irrigation and commercial plumbing systems where backflow prevention is required
This lead-free pressure vacuum breaker is designed for water media and features FNPT x FNPT connections. Constructed from bronze, it operates within a temperature range of 33°F to 140°F. Suitable for backflow prevention in water systems
Watts
This lead-free pressure vacuum breaker is designed for water media and features FNPT x FNPT connections. Constructed from bronze, it operates within a temperature range of 33°F to 140°F. Suitable for backflow prevention in water systems

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This lead-free pressure vacuum breaker is designed for water media and prevents back-siphonage in plumbing systems. It features FNPT x FNPT connections and operates within a temperature range of 33°F to 180°F. Typical applications include irrigation and water supply lines where backflow protection is required
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This lead-free pressure vacuum breaker is designed for water media and prevents back-siphonage in plumbing systems. It features FNPT x FNPT connections and operates within a temperature range of 33°F to 180°F. Typical applications include irrigation and water supply lines where backflow protection is required
This lead-free pressure vacuum breaker is 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. Used to prevent backflow of contaminated water in plumbing systems
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This lead-free pressure vacuum breaker is 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. Used to prevent backflow of contaminated water in plumbing systems
Lead-free pressure vacuum breaker with FIP x FIP connections for water media. Rated for high health hazard applications and temperature range 33°F to 140°F. Used in plumbing systems to prevent backflow and protect potable water supplies
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Lead-free pressure vacuum breaker with FIP x FIP connections for water media. Rated for high health hazard applications and temperature range 33°F to 140°F. Used in plumbing systems to prevent backflow and protect potable water supplies
This lead-free pressure vacuum breaker is 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. Commonly used in plumbing systems to prevent backflow in cross-connection scenarios
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This lead-free pressure vacuum breaker is 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. Commonly used in plumbing systems to prevent backflow in cross-connection scenarios
Pressure vacuum breaker for water media in high health hazard applications. Automatically vents to atmosphere to prevent backflow contamination in potable water systems. Features FNPT x FNPT connections and operates from 33°F to 140°F. Lead-free construction
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Pressure vacuum breaker for water media in high health hazard applications. Automatically vents to atmosphere to prevent backflow contamination in potable water systems. Features FNPT x FNPT connections and operates from 33°F to 140°F. Lead-free construction
This lead-free pressure vacuum breaker is designed for back-siphonage prevention in water systems. It features FNPT x FNPT connections and is rated for operating temperatures from 33°F to 140°F. Suitable for use in irrigation, commercial, and industrial water lines to protect potable water supplies
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This lead-free pressure vacuum breaker is designed for back-siphonage prevention in water systems. It features FNPT x FNPT connections and is rated for operating temperatures from 33°F to 140°F. Suitable for use in irrigation, commercial, and industrial water lines to protect potable water supplies
Lead-free pressure vacuum breaker for water media in high health hazard applications. Features FIP x FIP connections and operates within 33°F to 140°F. Used to prevent backflow in plumbing systems where contamination protection is required
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Lead-free pressure vacuum breaker for water media in high health hazard applications. Features FIP x FIP connections and operates within 33°F to 140°F. Used to prevent backflow in plumbing systems where contamination protection is required
This lead-free pressure vacuum breaker is designed for water media to prevent backflow contamination in potable water systems. It features FNPT x FNPT connections and is constructed from bronze. Typical applications include irrigation and commercial water lines where anti-siphon protection is required
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This lead-free pressure vacuum breaker is designed for water media to prevent backflow contamination in potable water systems. It features FNPT x FNPT connections and is constructed from bronze. Typical applications include irrigation and commercial water lines where anti-siphon protection is required