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Watts 800M4-FR Freeze-Resistant Pressure Vacuum Breaker - Pressure Vacuum Breakers
WattsPressure Vacuum Breakers

Watts 800M4-FR Freeze-Resistant Pressure Vacuum Breaker

The WATTS 800M4-FR is a freeze-resistant pressure vacuum breaker designed for water media. This bronze unit features FNPT x FNPT connections and operates within a temperature range of 33°F to 140°F.

SKU 3G-OTH-430703

Also listed as: 800M4FR · 800M4 FR

Brand
Watts
Item
800M4-FR Freeze-Resistant Pressure Vacuum Breaker
Part Number
800M4-FR
Category
Pressure Vacuum Breakers
Available to Order
Also known as:800M4-FRWatts
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

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

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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 unit features FNPT x FNPT connections and operates within a temperature range of 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 FNPT x FNPT connections, a bronze body, and a temperature range of 33°F to 140°F. It is designed for water media and carries manufacturer part number 800M4-FR. This freeze-resistant model prevents damage from ice formation in backflow prevention assemblies.

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 FNPT x FNPT 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 vent facing downward to allow proper drainage. Ensure the supply line is flushed before installation. Follow local plumbing codes and the manufacturer's instructions for freeze-resistant backflow preventers to maintain reliable operation between 33°F and 140°F.

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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