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Watts Backflow Preventer: SD-3, 3/8 in Pipe Size, FNPT x FNPT, 2.5 gpm Flow Rate - Carbonated Water Line Dual Check Backflow Preventers
WattsCarbonated Water Line Dual Check Backflow Preventers

Watts Backflow Preventer: SD-3, 3/8 in Pipe Size, FNPT x FNPT, 2.5 gpm Flow Rate

The WATTS SD-3 is a carbonated water line dual check backflow preventer with a 3/8 in pipe size and FNPT x FNPT connections. It has a flow rate of 2.5 gpm and an overall length of 3 in (MPN 3/8 SD3-FN).

SKU 3G-OTH-428547

Brand
Watts
Item
Backflow Preventer: SD-3, 3/8 in Pipe Size, FNPT x FNPT, 2.5 gpm Flow Rate
Category
Carbonated Water Line Dual Check Backflow Preventers
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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
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Watts Products
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 FNPT connections. It has a flow rate of 2.5 gpm and an overall length of 3 in (MPN 3/8 SD3-FN).

Used in

Common applications for Watts
Industrial burner gas safety systems — Watts HF2000 filters with GF-series seal kits maintain clean, regulated gas supply to burner pilot and main flame controls
Commercial heating and boiler installations — Modular filter assemblies support preventive maintenance and component replacement without full system shutdown
Process gas delivery pipelines — DN25 through DN125 filter bodies accommodate varying flow rates and inlet pressures across manufacturing and chemical processes
Gas pressure regulation benches — Multi-stage Watts filter platforms integrate with pressure reducers and safety shutoff valves in test and calibration environments
Equipment retrofit and upgrade projects — Available connection sizes and seal kits enable adaptation of newer Watts components into legacy gas control systems
Planned maintenance and spare-parts inventory — Filter seal kits allow facilities to stock consumables in advance, reducing downtime during scheduled gas system servicing

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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