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Watts Dual Check w Atmospheric Vent: 9D, 1/2 in Pipe Size, FNPT x FNPT, 18.7 gpm Flow Rate - Continuous Pressure Dual Check Backflow Preventers
WattsContinuous Pressure Dual Check Backflow Preventers

Watts Dual Check w Atmospheric Vent: 9D, 1/2 in Pipe Size, FNPT x FNPT, 18.7 gpm Flow Rate

The WATTS 9D is a continuous pressure dual check backflow preventer with an atmospheric vent, featuring a 1/2 in pipe size and FNPT x FNPT connections. It has a flow rate of 18.7 gpm and is constructed from brass…

SKU 3G-OTH-430229

Brand
Watts
Item
Dual Check w Atmospheric Vent: 9D, 1/2 in Pipe Size, FNPT x FNPT, 18.7 gpm Flow Rate
Category
Continuous Pressure Dual Check Backflow Preventers
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Technical Specifications

Watts
Manufacturer Part Number
9D-M3-1/2"
Type
FNPT x FNPT, Brass
Pipe Size
1/2 in
Flow Rate
18.7 gpm
Connection Type
FNPT x FNPT
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Watts Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The WATTS 9D is a continuous pressure dual check backflow preventer with an atmospheric vent, featuring a 1/2 in pipe size and FNPT x FNPT connections. It has a flow rate of 18.7 gpm and is constructed from brass (MPN 9D-M3-1/2").

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 continuous pressure 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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