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Watts Double Check Valve Assembly: 774, 8 in Pipe Size, Flange x Flange, 52.5 in Overall Lg - Watts Double Check Backflow Preventers
WattsWatts Double Check Backflow Preventers

Watts Double Check Valve Assembly: 774, 8 in Pipe Size, Flange x Flange, 52.5 in Overall Lg

The WATTS Double Check Valve Assembly: 774 is a Watts Double Check Backflow Preventer with an 8 in pipe size and flange x flange connections. It features NRS gate valve shut-off valves and has a 52.5 in overall…

SKU 3G-OTH-434592

Brand
Watts
Item
Double Check Valve Assembly: 774, 8 in Pipe Size, Flange x Flange, 52.5 in Overall Lg
Category
Watts Double Check Backflow Preventers
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Technical Specifications

Watts
Manufacturer Part Number
774-NRS
Type
Flange x Flange, 774
Overall Lg
52.5 in
Pipe Size
8 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 Double Check Valve Assembly: 774 is a Watts Double Check Backflow Preventer with an 8 in pipe size and flange x flange connections. It features NRS gate valve shut-off valves and has a 52.5 in overall length, identified by manufacturer part number 774-NRS.

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 irrigation, fire sprinkler, and process water lines where low-hazard cross-connections exist.

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

The Watts 774 double check valve assembly has an 8 in pipe size with flange x flange connections. It includes NRS gate valve shut-off valves and has an overall length of 52.5 in. The manufacturer part number is 774-NRS. It is a Watts brand backflow preventer designed for low-hazard applications.

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 Watts backflow preventer to any country.

How to install a Watts 774 double check valve assembly?

Install the Watts 774 double check valve assembly in a horizontal position with adequate clearance for maintenance. Ensure flow direction matches the arrow on the body. Use flange gaskets and bolts per pipe pressure rating. After installation, test the check valves and shut-off valves per local plumbing codes.

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 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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