Watts 3 757 OSY Double Check Valve Assembly, 3 in, Flange x Flange, PPO
The Watts 757 Double Check Valve Assembly is a 3-inch backflow preventer with flange x flange connections and an OSY gate valve shut-off. This assembly, identified by MPN 3 757 OSY, measures 31.75 inches in overall…
SKU 3G-OTH-434583
Also listed as: 3757OSY · 3-757-OSY
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The Watts 757 Double Check Valve Assembly is a 3-inch backflow preventer with flange x flange connections and an OSY gate valve shut-off. This assembly, identified by MPN 3 757 OSY, measures 31.75 inches in overall length and is constructed from PPO.
Frequently Asked Questions
What is a Watts 757 double check valve assembly used for?
The Watts 757 double check valve assembly prevents backflow of non-potable water into potable water supplies in commercial and industrial plumbing systems. It is commonly installed on fire sprinkler lines, irrigation systems, and boiler feed lines to protect against cross-connection contamination.
What are the specifications of the Watts 757 3 inch double check valve?
The Watts 757 double check valve assembly has a 3-inch pipe size with flange x flange connections and an OSY gate valve shut-off. Overall length is 31.75 inches, body material is PPO, and the manufacturer part number is 3 757 OSY. It is designed for backflow prevention in water lines.
Where to buy a Watts 757 double check valve assembly worldwide?
3G Electric supplies the Watts 757 double check valve assembly worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your site. Contact us for a quote on the 3-inch flange x flange model with OSY gate valve (MPN 3 757 OSY).
How to install a Watts 757 double check valve assembly?
Install the Watts 757 double check valve assembly in a horizontal or vertical orientation with flow arrow pointing downstream. Ensure flange gaskets are properly seated and bolts torqued evenly. Always install test cocks and shut-off valves per local plumbing codes. Consult the manufacturer's installation manual for specific torque values.
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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.
