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Watts Backflow Preventer: SD-2, 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-2, 3/8 in Pipe Size, FNPT x FNPT, 2.5 gpm Flow Rate

The WATTS SD-2 is a carbonated water line dual check backflow preventer with a 3/8 in pipe size and FNPT x FNPT connections. It has a 2.5 gpm flow rate and a 3 in overall length (MPN 3/8 SD2-FN).

SKU 3G-OTH-428540

Also listed as: 38SD2FN · 3 8 SD2 FN · 3-8-SD2-FN

Brand
Watts
Item
Backflow Preventer: SD-2, 3/8 in Pipe Size, FNPT x FNPT, 2.5 gpm Flow Rate
Category
Carbonated Water Line Dual Check Backflow Preventers
Available to Order
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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

Watts
Manufacturer Part Number
3/8 SD2-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

The WATTS SD-2 is a carbonated water line dual check backflow preventer with a 3/8 in pipe size and FNPT x FNPT connections. It has a 2.5 gpm flow rate and a 3 in overall length (MPN 3/8 SD2-FN).

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the WATTS SD-2 backflow preventer used for?

The WATTS SD-2 is a dual check backflow preventer designed specifically for carbonated water lines. It prevents reverse flow of carbonated water into potable water systems, commonly used in commercial beverage dispensers and soda fountains.

What are the specifications of the WATTS SD-2 backflow preventer?

The WATTS SD-2 has a 3/8 in pipe size with FNPT x FNPT connections, a flow rate of 2.5 gpm, and an overall length of 3 in. The manufacturer part number is 3/8 SD2-FN. It is a carbonated water line dual check backflow preventer from WATTS.

Where to buy the WATTS SD-2 backflow preventer worldwide?

3G Electric supplies the WATTS SD-2 backflow preventer worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to install the WATTS SD-2 backflow preventer?

Install the WATTS SD-2 in-line with the carbonated water supply, ensuring flow direction matches the arrow on the body. Use thread sealant on the FNPT connections and tighten to manufacturer torque specs. Test for leaks after installation per local plumbing codes.

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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