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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
Category
Pressure Vacuum Breakers
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

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

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 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
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 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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The Watts 800M4-FR is a freeze-resistant pressure vacuum breaker constructed of bronze with FNPT x FNPT connections. Designed for water media, it operates within a temperature range of 33°F to 140°F. This device is used in backflow prevention applications, particularly on outdoor or commercial water lines where freezing conditions may occur
Pressure vacuum breaker with FNPT x FNPT connections for water media. Rated for high health hazard applications, operating from 33°F to 140°F. Used in backflow prevention assemblies to protect potable water supplies
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Pressure vacuum breaker with FNPT x FNPT connections for water media. Rated for high health hazard applications, operating from 33°F to 140°F. Used in backflow prevention assemblies to protect potable water supplies
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