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Watts Dual Check Vacuum Breaker: 800M4-FR, FNPT x FNPT, For Water Media, 33°F – 140°F - Pressure Vacuum Breakers
WattsPressure Vacuum Breakers

Watts Dual Check Vacuum Breaker: 800M4-FR, FNPT x FNPT, For Water Media, 33°F – 140°F

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

SKU 3G-OTH-430705

Brand
Watts
Item
Dual Check Vacuum Breaker: 800M4-FR, FNPT x FNPT, For Water Media, 33°F – 140°F
Category
Pressure Vacuum Breakers
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Technical Specifications

Watts
Manufacturer Part Number
800M4-FR
Type
FNPT x FNPT, For Water Media, 33°F – 140°F, Bronze, NPT
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 dual check vacuum breaker, a type of pressure vacuum breaker designed for water media. This bronze 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 dual check vacuum breaker used for?

The WATTS 800M4-FR is a pressure vacuum breaker used to prevent backflow in water systems. It protects potable water supplies by venting air and stopping reverse flow, commonly installed in commercial or industrial irrigation and plumbing applications.

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

The WATTS 800M4-FR is a bronze dual check vacuum breaker with FNPT x FNPT connections. It is rated for water media and operating temperatures from 33°F to 140°F. The manufacturer part number is 800M4-FR.

Where to buy the WATTS 800M4-FR worldwide?

3G Electric supplies the WATTS 800M4-FR dual check vacuum breaker worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time.

How to install the WATTS 800M4-FR vacuum breaker?

Install the WATTS 800M4-FR in a vertical position with the vent facing downward. Ensure FNPT connections are properly sealed with thread tape. Follow local plumbing codes and the manufacturer's instructions for correct orientation and clearance to maintain backflow protection.

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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