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Watts Double Check Valve Assembly: 757, 2 1/2 in Pipe Size, Flange x Flange - Watts Double Check Backflow Preventers
WattsWatts Double Check Backflow Preventers

Watts Double Check Valve Assembly: 757, 2 1/2 in Pipe Size, Flange x Flange

The Watts 757 Double Check Valve Assembly is a Watts Double Check Backflow Preventer with a 2 1/2 in pipe size and flange x flange connections. It features an OSY gate valve shut-off type and has an overall length of…

SKU 3G-OTH-434579

Also listed as: 212757OSY · 21 2 757 OSY · 21-2-757-OSY

Brand
Watts
Item
Double Check Valve Assembly: 757, 2 1/2 in Pipe Size, Flange x Flange
Category
Watts Double Check Backflow Preventers
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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
21/2 757 OSY
Type
Flange x Flange
Overall Lg
30.75 in
Pipe Size
2 1/2 in
Connection Type
Flange x Flange
Shut-Off Valve Type
OSY Gate Valve

Technical Documents

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

Product Description

The Watts 757 Double Check Valve Assembly is a Watts Double Check Backflow Preventer with a 2 1/2 in pipe size and flange x flange connections. It features an OSY gate valve shut-off type and has an overall length of 30.75 in. This assembly is designed for backflow prevention applications.

Frequently Asked Questions

What is the Watts 757 Double Check Valve Assembly used for?

The Watts 757 Double Check Valve Assembly is used for backflow prevention in industrial water systems. It protects potable water supplies from contamination by preventing reverse flow, commonly installed in commercial, municipal, and process piping applications.

What are the specifications of the Watts 757 Double Check Valve Assembly?

The Watts 757 has a 2 1/2 in pipe size, flange x flange connections, and an OSY gate valve shut-off type. Overall length is 30.75 in. It is a double check backflow preventer designed for reliable backflow protection in industrial settings.

Where to buy the Watts 757 Double Check Valve Assembly worldwide?

3G Electric supplies the Watts 757 Double Check Valve Assembly 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 backflow preventer.

How to install the Watts 757 Double Check Valve Assembly?

Install the Watts 757 with flange x flange connections using compatible gaskets and bolts. Ensure flow direction matches the arrow on the body. Follow local plumbing codes and manufacturer guidelines for proper backflow prevention installation and testing.

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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