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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-bodied unit features FNPT x FNPT connections and is rated for operating temperatures from 33°F to 140°F.

SKU 3G-OTH-430704

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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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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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. Its bronze body and FNPT connections suit outdoor or unheated installations where temperatures range from 33°F to 140°F.

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

The WATTS 800M4-FR has a bronze body, FNPT x FNPT connections, and is rated for water media from 33°F to 140°F. It is a freeze-resistant pressure vacuum breaker, model 800M4-FR, designed for reliable backflow prevention in low-temperature environments.

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 backflow preventer.

How to install the 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 and test for leaks after installation. Follow local plumbing codes and the manufacturer's instructions for freeze protection.

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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