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Watts 957-OSY 21/2 Reduced Pressure Zone Backflow Preventer with - Watts RPZ Backflow Preventers
WattsWatts RPZ Backflow Preventers

Watts 957-OSY 21/2 Reduced Pressure Zone Backflow Preventer with

<p>The Watts 957-OSY 21/2 Reduced Pressure Zone Backflow Preventer with Flood Detection Sensor is a critical safety device for protecting potable water supplies from contamination. This model features a 2 1/2-inch…

SKU 3G-OTH-444360

Also listed as: 957OSY212 · 957 OSY 21 2 · 957-OSY-21-2

Brand
Watts
Item
957-OSY 21/2 Reduced Pressure Zone Backflow Preventer with
Part Number
957-OSY 21/2
Category
Watts RPZ Backflow Preventers
Available to Order
Also known as:957-OSY 21/2Watts
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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
957-OSY 21/2
Type
with Flood Detection Sensor
Pipe Size
2 1/2 in
Connection Type
Flange
Shut-Off Valve Type
OSY Gate Valve

Technical Documents

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

Product Description

<p>The Watts 957-OSY 21/2 Reduced Pressure Zone Backflow Preventer with Flood Detection Sensor is a critical safety device for protecting potable water supplies from contamination. This model features a 2 1/2-inch flanged connection and an OSY (Outside Stem and Yoke) gate valve for positive shut-off. The integrated flood detection sensor provides an early warning of any discharge, helping to prevent water damage and minimize downtime.</p><p>Designed for commercial and industrial applications, this backflow preventer is ideal for facilities requiring high-level protection, such as chemical plants, food processing, and multi-story buildings. As a Singapore-based supplier, 3G Electric offers this unit with SGD quotes on request, handles GST for local buyers, and provides fast delivery across Singapore and Southeast Asia.</p>

Frequently Asked Questions

What are the key specifications of the Watts 957-OSY 21/2 backflow preventer?

The Watts 957-OSY 21/2 is a reduced pressure zone backflow preventer with a flood detection sensor. It has a 2 1/2-inch pipe size, flanged connections, and an OSY gate valve for shut-off. The manufacturer part number is 957-OSY 21/2.

Can I get a quote in SGD and what about GST and delivery?

Yes, 3G Electric provides quotes in SGD upon request. For Singapore buyers, GST is handled accordingly. We offer fast delivery within Singapore and Southeast Asia.

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 rpz 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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This Watts reduced pressure zone backflow preventer features a bronze body, 1/2 in FNPT connections, an integral strainer, and a ball valve shut-off. It is designed to protect potable water supplies from cross-connection contamination in commercial and industrial plumbing systems, operating within a temperature range of 33°F to 180°F
Watts
This Watts reduced pressure zone backflow preventer features a bronze body, 1/2 in FNPT connections, an integral strainer, and a ball valve shut-off. It is designed to protect potable water supplies from cross-connection contamination in commercial and industrial plumbing systems, operating within a temperature range of 33°F to 180°F

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