Watts Double Check Valve Assembly: 774, 3 in Pipe Size, Flange x Flange, 38 in Overall Lg
The Watts 774 Double Check Valve Assembly is a 3-inch pipe size backflow preventer with flange x flange connections and an OSY gate valve shut-off. This model, MPN 774-OSY, has an overall length of 38 inches.
SKU 3G-OTH-434599
Also listed as: 774OSY · 774 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 774 Double Check Valve Assembly is a 3-inch pipe size backflow preventer with flange x flange connections and an OSY gate valve shut-off. This model, MPN 774-OSY, has an overall length of 38 inches.
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, industrial, and municipal plumbing systems. It is installed in cross-connection control applications to protect drinking water from contamination due to backpressure or backsiphonage.
What are the specifications of the Watts 774 double check valve assembly?
The Watts 774 double check valve assembly has a 3-inch pipe size with flange x flange connections and an OSY gate valve shut-off. Its overall length is 38 inches, and the manufacturer part number is 774-OSY. This Watts backflow preventer is designed for reliable backflow protection in water lines.
Where to buy the Watts 774 double check valve assembly worldwide?
You can source the Watts 774 double check valve assembly worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this Watts backflow preventer model 774-OSY.
How to install a Watts double check valve assembly?
Install the Watts 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 to secure connections. Always follow local plumbing codes and the manufacturer's instructions for proper backflow preventer installation.
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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.
