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Watts 774-NRS Double Check Valve Assembly - Watts Double Check Backflow Preventers
WattsWatts Double Check Backflow Preventers

Watts 774-NRS Double Check Valve Assembly

The Watts 774 Double Check Valve Assembly (MPN 774-NRS) is a 12-inch pipe size backflow preventer with flange x flange connections. It features NRS gate valve shut-off valves and has an overall length of 57.5 inches.

SKU 3G-OTH-434596

Also listed as: 774NRS · 774 NRS

Brand
Watts
Item
774-NRS Double Check Valve Assembly
Part Number
774-NRS
Category
Watts Double Check Backflow Preventers
Available to Order
Also known as:774-NRSWatts
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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
774-NRS
Type
Flange x Flange, 774
Overall Lg
57.5 in
Pipe Size
12 in
Connection Type
Flange x Flange
Shut-Off Valve Type
NRS Gate Valve

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

Product Description

The Watts 774 Double Check Valve Assembly (MPN 774-NRS) is a 12-inch pipe size backflow preventer with flange x flange connections. It features NRS gate valve shut-off valves and has an overall length of 57.5 inches.

Frequently Asked Questions

What is the Watts 774 Double Check Valve Assembly used for?

The Watts 774 Double Check Valve Assembly is used to prevent backflow of non-potable water into potable water supplies in commercial, industrial, and municipal water systems. It is suitable for low-hazard cross-connections where backpressure or backsiphonage may occur, ensuring water safety in pipelines.

What are the specifications of the Watts 774 Double Check Valve Assembly?

The Watts 774 Double Check Valve Assembly (MPN 774-NRS) has a 12-inch pipe size, flange x flange connections, and an overall length of 57.5 inches. It features NRS gate valve shut-off valves and is designed for backflow prevention in water systems. The assembly is manufactured by Watts.

Where to buy the Watts 774 Double Check Valve Assembly worldwide?

You can source the Watts 774 Double Check Valve Assembly worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this backflow preventer.

How to install the Watts 774 Double Check Valve Assembly?

Install the Watts 774 Double Check Valve Assembly in a horizontal or vertical position with adequate clearance for maintenance. Ensure flange connections are properly aligned and gasketed. Follow local plumbing codes and manufacturer guidelines for testing and commissioning. Always consult a qualified technician for installation.

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 watts double check backflow preventers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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