We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

3G Electric
RFQ CartGet a QuoteSign inSign up
Watts Anti-Siphon Backflow Preventer: 3/4 LF800M4-QT-FZ, FNPT x FNPT, For Water Media - Lead-Free Pressure Vacuum Breakers
WattsLead-Free Pressure Vacuum Breakers

Watts Anti-Siphon Backflow Preventer: 3/4 LF800M4-QT-FZ, FNPT x FNPT, For Water Media

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

Brand
Watts
Item
Anti-Siphon Backflow Preventer: 3/4 LF800M4-QT-FZ, FNPT x FNPT, For Water Media
Category
Lead-Free Pressure 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
3/4 LF800M4-QT-FZ
Type
FNPT x FNPT, For Water Media, 33°F – 140°F
Connection Type
FNPT x FNPT
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 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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
WATTS Anti-Siphon Backflow Preventer: 3/4 800M4-QT-FZ, FNPT x FNPT, For Water Media, 33°F – 140°F. Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
Watts
WATTS Anti-Siphon Backflow Preventer: 3/4 800M4-QT-FZ, FNPT x FNPT, For Water Media, 33°F – 140°F. Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
WATTS Anti-Siphon Backflow Preventer: 3/4 LF 008PCQT-3/4", FNPT x FNPT, For Water Media, Bronze, NPT. Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
Watts
WATTS Anti-Siphon Backflow Preventer: 3/4 LF 008PCQT-3/4", FNPT x FNPT, For Water Media, Bronze, NPT. Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
WATTS Anti-Siphon Backflow Preventer: 1/2 LF 008PCQT-1/2", FNPT x FNPT, For Water Media, Bronze, NPT. Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
Watts
WATTS Anti-Siphon Backflow Preventer: 1/2 LF 008PCQT-1/2", FNPT x FNPT, For Water Media, Bronze, NPT. Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
WATTS Vacuum Breaker: 1 LF800M4-FR, FNPT x FNPT, For Water Media, 33°F – 140°F, High Health Hazard. Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
Watts
WATTS Vacuum Breaker: 1 LF800M4-FR, FNPT x FNPT, For Water Media, 33°F – 140°F, High Health Hazard. Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
WATTS Anti-Siphon Pressure Vacuum Breaker: 1 800M4-QT-FZ, FNPT x FNPT, For Water Media, 33°F – 140°F. Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
Watts
WATTS Anti-Siphon Pressure Vacuum Breaker: 1 800M4-QT-FZ, FNPT x FNPT, For Water Media, 33°F – 140°F. Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
WATTS Pressure Vacuum Breaker: 2" LF800M4-QT, FNPT x FNPT, For Water Media, 33°F – 140°F, Bronze. Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
Watts
WATTS Pressure Vacuum Breaker: 2" LF800M4-QT, FNPT x FNPT, For Water Media, 33°F – 140°F, Bronze. Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.

More from Watts

View all Watts parts →
WATTS Anti-Siphon Backflow Preventer: 1 LF 008PCQT-1", FNPT x FNPT, For Water Media, 33°F – 180°F. Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
Watts
WATTS Anti-Siphon Backflow Preventer: 1 LF 008PCQT-1", FNPT x FNPT, For Water Media, 33°F – 180°F. Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
WATTS Vacuum Breaker: 3/4 LF800M4-FR, FNPT x FNPT, For Water Media, 33°F – 140°F, High Health Hazard. Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
Watts
WATTS Vacuum Breaker: 3/4 LF800M4-FR, FNPT x FNPT, For Water Media, 33°F – 140°F, High Health Hazard. Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
WATTS Vacuum Breaker: 1/2 LF800M4-FR, FIP x FIP, For Water Media, 33°F – 140°F, High Health Hazard. Key specifications — Brand: WATTS; Connection Type: FIP x FIP.
Watts
WATTS Vacuum Breaker: 1/2 LF800M4-FR, FIP x FIP, For Water Media, 33°F – 140°F, High Health Hazard. Key specifications — Brand: WATTS; Connection Type: FIP x FIP.
WATTS Vacuum Breaker: 1/2 LF800M4-QT, FNPT x FNPT, For Water Media, 33°F – 140°F, High Health Hazard. Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
Watts
WATTS Vacuum Breaker: 1/2 LF800M4-QT, FNPT x FNPT, For Water Media, 33°F – 140°F, High Health Hazard. Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
WATTS Vacuum Breaker: 2 LF800M4-FR, FNPT x FNPT, For Water Media, 33°F – 140°F, High Health Hazard. Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
Watts
WATTS Vacuum Breaker: 2 LF800M4-FR, FNPT x FNPT, For Water Media, 33°F – 140°F, High Health Hazard. Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
WATTS Vacuum Breaker: 1 1/2 LF800M4-QT, FNPT x FNPT, For Water Media, 33°F – 140°F, Back-Siphonage (MPN 1-1/2 LF800M4-QT). Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
Watts
WATTS Vacuum Breaker: 1 1/2 LF800M4-QT, FNPT x FNPT, For Water Media, 33°F – 140°F, Back-Siphonage (MPN 1-1/2 LF800M4-QT). Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
WATTS Vacuum Breaker: 1 1/4 LF800M4-QT, FIP x FIP, For Water Media, 33°F – 140°F, High Health Hazard (MPN 1-1/4 LF800M4-QT). Key specifications — Brand: WATTS; Connection Type: FIP x FIP.
Watts
WATTS Vacuum Breaker: 1 1/4 LF800M4-QT, FIP x FIP, For Water Media, 33°F – 140°F, High Health Hazard (MPN 1-1/4 LF800M4-QT). Key specifications — Brand: WATTS; Connection Type: FIP x FIP.
WATTS Anti-Siphon Pressure Vacuum Breaker: 1 LF800M4-QT-FZ, FNPT x FNPT, For Water Media, Bronze. Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.
Watts
WATTS Anti-Siphon Pressure Vacuum Breaker: 1 LF800M4-QT-FZ, FNPT x FNPT, For Water Media, Bronze. Key specifications — Brand: WATTS; Connection Type: FNPT x FNPT.