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Watts 1/2 800M4-QT Pressure Vacuum Breaker, FNPT x FNPT, High Health Hazard - Pressure Vacuum Breakers
WattsPressure Vacuum Breakers

Watts 1/2 800M4-QT Pressure Vacuum Breaker, FNPT x FNPT, High Health Hazard

The WATTS 1/2 800M4-QT is a pressure vacuum breaker designed for water media in high health hazard applications. This unit features FNPT x FNPT connections and operates within a temperature range of 33°F to 140°F.

SKU 3G-OTH-430701

Also listed as: 12800M4QT · 1 2 800M4 QT · 1-2-800M4-QT

Brand
Watts
Item
1/2 800M4-QT Pressure Vacuum Breaker, FNPT x FNPT, High Health Hazard
Part Number
1/2 800M4-QT
Category
Pressure Vacuum Breakers
Available to Order
Also known as:1/2 800M4-QTWatts
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Delivery
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
1/2 800M4-QT
Type
FNPT x FNPT, For Water Media, 33°F – 140°F, High Health Hazard
Connection Type
FNPT x FNPT

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

Product Description

The WATTS 1/2 800M4-QT is a pressure vacuum breaker designed for water media in high health hazard applications. This 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 1/2 800M4-QT pressure vacuum breaker used for?

The WATTS 1/2 800M4-QT pressure vacuum breaker prevents backflow of contaminated water into potable supplies in high health hazard applications. It is used in commercial and industrial water systems where cross-connection control is critical, such as irrigation, boiler feed, and process lines.

What are the specifications of the WATTS 1/2 800M4-QT?

The WATTS 1/2 800M4-QT has FNPT x FNPT connections, operates with water media from 33°F to 140°F, and is rated for high health hazard protection. The manufacturer part number is 1/2 800M4-QT. It is a pressure vacuum breaker designed for backflow prevention in demanding environments.

Where to buy the WATTS 1/2 800M4-QT worldwide?

3G Electric supplies the WATTS 1/2 800M4-QT pressure vacuum breaker to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this high health hazard backflow prevention device.

How to install a WATTS pressure vacuum breaker?

Install the WATTS pressure vacuum breaker in an accessible, vertical position with the inlet below the outlet. Ensure the unit is protected from freezing and debris. Follow local plumbing codes and the manufacturer's instructions for proper support and testing. Always verify flow direction and pressure ratings before commissioning.

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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