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Watts 774-NRS Double Check Valve Assembly, 2 1/2 in, Flange x Flange - Watts Double Check Backflow Preventers
WattsWatts Double Check Backflow Preventers

Watts 774-NRS Double Check Valve Assembly, 2 1/2 in, Flange x Flange

The Watts 774 Double Check Valve Assembly is a flange x flange backflow preventer from the Watts Double Check Backflow Preventers product line. This model, identified by manufacturer part number 774-NRS, features a 2…

SKU 3G-OTH-434577

Also listed as: 774NRS · 774 NRS

Brand
Watts
Item
774-NRS Double Check Valve Assembly, 2 1/2 in, Flange x Flange
Part Number
774-NRS
Category
Watts Double Check Backflow Preventers
Available to Order
Also known as:774-NRSWatts
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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

Watts
Manufacturer Part Number
774-NRS
Type
Flange x Flange, 774
Overall Lg
37 in
Pipe Size
2 1/2 in
Connection Type
Flange x Flange
Shut-Off Valve Type
NRS Gate Valve

Technical Documents

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

Product Description

The Watts 774 Double Check Valve Assembly is a flange x flange backflow preventer from the Watts Double Check Backflow Preventers product line. This model, identified by manufacturer part number 774-NRS, features a 2 1/2 inch pipe size and a 37 inch overall length, and is equipped with NRS gate valve shut-off valves.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

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 and industrial plumbing systems. It is commonly installed in fire sprinkler systems, irrigation lines, and water mains to protect against cross-connection contamination.

What are the specifications of the Watts 774 double check valve assembly?

The Watts 774 double check valve assembly has a 2 1/2 in pipe size, flange x flange connection, and a 37 in overall length. It features NRS gate valve shut-off valves and is identified by manufacturer part number 774-NRS. This model is part of the Watts Double Check Backflow Preventers product line.

Where to buy the Watts 774 double check valve assembly worldwide?

3G Electric supplies the Watts 774 double check valve assembly 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; we source and deliver this backflow preventer to any international destination.

How to install a Watts 774 double check valve assembly?

Install the Watts 774 double check valve assembly in a horizontal or vertical position with flow direction matching the arrow on the body. Ensure adequate clearance for maintenance and testing. Use flange gaskets and bolts per local plumbing codes. Always consult the manufacturer's installation manual for torque specifications and testing procedures.

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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