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Watts 3/8 SD3-FN Carbonated Water Line Dual Check Backflow Preventer - Carbonated Water Line Dual Check Backflow Preventers
WattsCarbonated Water Line Dual Check Backflow Preventers

Watts 3/8 SD3-FN Carbonated Water Line Dual Check Backflow Preventer

<p>The Watts 3/8 SD3-FN is a dual check backflow preventer specifically designed for carbonated water lines. With a 3/8-inch FNPT connection and a flow rate of 2.5 gallons per minute, this compact unit (3 inches…

SKU 3G-OTH-428547

Also listed as: 38SD3FN · 3 8 SD3 FN · 3-8-SD3-FN

Brand
Watts
Item
3/8 SD3-FN Carbonated Water Line Dual Check Backflow Preventer
Part Number
3/8 SD3-FN
Category
Carbonated Water Line Dual Check Backflow Preventers
Available to Order
Also known as:3/8 SD3-FNWatts
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Technical specs
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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
3/8 SD3-FN
Type
FNPT x FNPT
Overall Lg
3 in
Pipe Size
3/8 in
Flow Rate
2.5 gpm
Connection Type
FNPT x FNPT

Technical Documents

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

Product Description

<p>The Watts 3/8 SD3-FN is a dual check backflow preventer specifically designed for carbonated water lines. With a 3/8-inch FNPT connection and a flow rate of 2.5 gallons per minute, this compact unit (3 inches overall length) ensures reliable protection against backflow in beverage dispensing systems. It is ideal for commercial kitchens, restaurants, and food service operations that require safe carbonated water supply.</p><p>As a Singapore-based supplier, 3G Electric offers this Watts backflow preventer with worldwide shipping. Request an SGD quote for your project, and enjoy GST handling for local buyers plus fast delivery across Singapore and Southeast Asia.</p>

Frequently Asked Questions

What are the key specifications of the Watts 3/8 SD3-FN?

The Watts 3/8 SD3-FN has a 3/8-inch FNPT connection, a flow rate of 2.5 gpm, and an overall length of 3 inches. It is designed for carbonated water lines.

Can I get a quote in SGD and fast delivery in Singapore?

Yes, 3G Electric provides SGD quotes on request. For Singapore buyers, GST is handled, and we offer fast delivery across 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 carbonated water line dual 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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Watts SD2-MF is a dual check backflow preventer for carbonated water lines. It features 3/8" flare x flare connections, a flow rate of 2.5 gpm, and an overall length of 3 inches. Used in soda fountains, beverage dispensers, and commercial kitchens to prevent reverse flow of carbonated water into potable water lines
Watts
Watts SD2-MF is a dual check backflow preventer for carbonated water lines. It features 3/8" flare x flare connections, a flow rate of 2.5 gpm, and an overall length of 3 inches. Used in soda fountains, beverage dispensers, and commercial kitchens to prevent reverse flow of carbonated water into potable water lines

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