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Watts 3/4 800M4-QT-FZ Pressure Vacuum Breaker, FNPT x FNPT, 33°F – 140°F - Pressure Vacuum Breakers
WattsPressure Vacuum Breakers

Watts 3/4 800M4-QT-FZ Pressure Vacuum Breaker, FNPT x FNPT, 33°F – 140°F

The WATTS Anti-Siphon Backflow Preventer, model 3/4 800M4-QT-FZ, is a 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.

SKU 3G-OTH-430692

Also listed as: 34800M4QTFZ · 3 4 800M4 QT FZ · 3-4-800M4-QT-FZ

Brand
Watts
Item
3/4 800M4-QT-FZ Pressure Vacuum Breaker, FNPT x FNPT, 33°F – 140°F
Part Number
3/4 800M4-QT-FZ
Category
Pressure Vacuum Breakers
Available to Order
Also known as:3/4 800M4-QT-FZWatts
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Technical Specifications

Watts
Manufacturer Part Number
3/4 800M4-QT-FZ
Type
FNPT x FNPT, For Water Media, 33°F – 140°F
Connection Type
FNPT x FNPT

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

Product Description

The WATTS Anti-Siphon Backflow Preventer, model 3/4 800M4-QT-FZ, is a 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.

Frequently Asked Questions

What is the WATTS Anti-Siphon Backflow Preventer used for?

The WATTS Anti-Siphon Backflow Preventer, model 3/4 800M4-QT-FZ, is a pressure vacuum breaker used to prevent backflow of contaminated water into potable water supplies. It is commonly installed in irrigation, commercial, and residential plumbing systems to protect against cross-connections.

What are the specifications of the WATTS 3/4 800M4-QT-FZ backflow preventer?

This WATTS pressure vacuum breaker has FNPT x FNPT connections, is rated for water media, and operates in temperatures from 33°F to 140°F. The manufacturer part number is 3/4 800M4-QT-FZ. It is designed for anti-siphon backflow prevention in plumbing systems.

Where to buy the WATTS 3/4 800M4-QT-FZ backflow preventer worldwide?

You can source the WATTS 3/4 800M4-QT-FZ backflow preventer 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.

How to install a WATTS pressure vacuum breaker?

Install the WATTS pressure vacuum breaker vertically and at least 12 inches above the highest downstream outlet. Ensure the FNPT connections are properly sealed with thread tape. Test the device annually per local codes to confirm it prevents backflow. Always follow the manufacturer's instructions.

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 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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