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Part Details: Watts Series 9D Backflow Preventers #270298, 270299

Backflow preventers are a critical aspect of any chemical dilution equipment. The Watts Series 9D Dual Check Valve with Intermediate Atmospheric Vent is suitable for many installation situations.

Key Features

  • Designed for use on non-health-hazard, continuous pressure, point-of-use applications for protection against backsiphonage and backpressure.
  • When installed upstream of a water-driven foamer or sprayer this part will prevent chemical solution and/or compressed air from backing-up into the water source in the event of reverse suction (power failure, improper operation, failure to close inlet ball valves, etc.)
  • In the event of reverse suction, backwards flowing water, chemical, and/or compressed air will discharge from a vent on the side of the backflow preventer.  If desired, this vent can be plumbed to direct the discharge to an appropriate drainage area.
  • May be mounted horizontally or vertically.
  • Available for 1/2″ or 3/4″ plumbing.

**Install in accordance with local plumbing codes**

Available Sizes

DescriptionLafferty Part Number
1/2″ (Watts 9DM2)270298
3/4″ (Watts 9DM3)270299

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