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Watts 800M4-FR Freeze-Resistant Pressure Vacuum Breaker, FNPT x FNPT, Bronze - Pressure Vacuum Breakers
WattsPressure Vacuum Breakers

Watts 800M4-FR Freeze-Resistant Pressure Vacuum Breaker, FNPT x FNPT, Bronze

The WATTS 800M4-FR is a freeze-resistant pressure vacuum breaker designed for water media. This bronze-bodied unit features FNPT x FNPT connections and is rated for operating temperatures from 33°F to 140°F.

SKU 3G-OTH-430702

Also listed as: 800M4FR · 800M4 FR

Brand
Watts
Item
800M4-FR Freeze-Resistant Pressure Vacuum Breaker, FNPT x FNPT, Bronze
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
800M4-FR
Type
FNPT x FNPT, For Water Media, 33°F – 140°F, Bronze
Connection Type
FNPT x FNPT

Technical Documents

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

Product Description

The WATTS 800M4-FR is a freeze-resistant pressure vacuum breaker designed for water media. This bronze-bodied unit features FNPT x FNPT connections and is rated for operating temperatures from 33°F to 140°F.

Frequently Asked Questions

What is the WATTS 800M4-FR freeze resistant vacuum breaker used for?

The WATTS 800M4-FR is a freeze-resistant pressure vacuum breaker designed to protect potable water systems from backflow in cold climates. It is suitable for water media and operates between 33°F and 140°F, making it ideal for outdoor or unheated installations.

What are the specifications of the WATTS 800M4-FR?

The WATTS 800M4-FR has a bronze body with FNPT x FNPT connections. It is rated for water media at temperatures from 33°F to 140°F. The manufacturer part number is 800M4-FR. This freeze-resistant design helps prevent damage in freezing conditions.

Where to buy the WATTS 800M4-FR worldwide?

3G Electric supplies the WATTS 800M4-FR freeze resistant vacuum breaker to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this bronze-bodied backflow prevention device.

How to install a WATTS 800M4-FR freeze resistant vacuum breaker?

Install the WATTS 800M4-FR in a vertical position with the inlet below the outlet to ensure proper drainage. Use pipe thread sealant on the FNPT connections. Follow local plumbing codes and the manufacturer's instructions for freeze protection and testing requirements.

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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Compatible alternatives & equivalents

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The Watts 800M4-FR is a freeze-resistant pressure vacuum breaker constructed of bronze with female NPT connections on both ends. 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 in outdoor or cold-weather installations such as irrigation systems, to protect potable water supplies from contamination
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The Watts 800M4-FR is a freeze-resistant pressure vacuum breaker constructed of bronze with female NPT connections on both ends. 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 in outdoor or cold-weather installations such as irrigation systems, to protect potable water supplies from contamination
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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 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
This pressure vacuum breaker features FNPT x FNPT connections and is designed for water media in high health hazard applications. It operates within a temperature range of 33°F to 140°F, providing backflow prevention in irrigation, industrial process lines, and commercial plumbing systems
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This pressure vacuum breaker features FNPT x FNPT connections and is designed for water media in high health hazard applications. It operates within a temperature range of 33°F to 140°F, providing backflow prevention in irrigation, industrial process lines, and commercial plumbing systems

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The Watts 800M4-FR is a freeze-resistant pressure vacuum breaker with a bronze body and 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 systems to protect potable water supplies, particularly in outdoor or unheated installations where freezing conditions may occur
Watts
The Watts 800M4-FR is a freeze-resistant pressure vacuum breaker with a bronze body and 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 systems to protect potable water supplies, particularly in outdoor or unheated installations where freezing conditions may occur
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Pressure vacuum breaker for water media in high health hazard applications. FNPT x FNPT connections. Temperature range 33°F to 140°F. Used in backflow prevention systems for cross-connection control in commercial and industrial water lines
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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 to prevent backflow in cross-connection control systems
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
Watts
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
Watts
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
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
Watts
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 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