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

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

The WATTS SD-3 is a carbonated water line dual check backflow preventer with a 3/8 in pipe size and FNPT x MNPT connections. It has a 2.5 gpm flow rate and an overall length of 4.5 in.

SKU 3G-OTH-428541

Also listed as: SD3MF38 · SD3 MF 3 8 · SD3-MF-3-8

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

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3G Electric (S) Pte. Ltd. — Singapore

Product Description

The WATTS SD-3 is a carbonated water line dual check backflow preventer with a 3/8 in pipe size and FNPT x MNPT connections. It has a 2.5 gpm flow rate and an overall length of 4.5 in.

Frequently Asked Questions

What is a WATTS SD-3 dual check valve used for?

The WATTS SD-3 is a carbonated water line dual check backflow preventer. It protects potable water supplies from backflow contamination in beverage dispensing systems, soda fountains, and commercial kitchens where carbonated water is used.

What are the specifications of the WATTS SD-3 dual check valve?

The WATTS SD-3 has a 3/8 in pipe size with FNPT x MNPT connections, a 2.5 gpm flow rate, and an overall length of 4.5 in. It is designed specifically for carbonated water lines to prevent backflow.

Where to buy a WATTS SD-3 dual check valve worldwide?

3G Electric supplies the WATTS SD-3 dual check valve to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this carbonated water line backflow preventer.

How to install a WATTS SD-3 dual check valve?

Install the WATTS SD-3 in a vertical or horizontal position with flow direction matching the arrow on the body. Use thread sealant on the FNPT x MNPT connections and ensure the valve is accessible for periodic testing and maintenance per local codes.

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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