Backflow Preventer with Intermediate Atmospheric Vent Series 9D

Model #: 9DM3; Conn. Size: 1/2" x 1/2" Threaded;

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  • Suitable for working pressures up to 175 lbs. (minimum 25 PSI required)
  • Install either horizontally or vertically
  • For low-hazard applications and low-flow supply lines
  • Protects against both back-siphonage and back-pressure
  • Conn. Size: 1/2" x 1/2" Threaded
  • Recommended for residential boiler feed lines when supply pressure falls below heating system pressure

Model #: 9DM3; Conn. Size: 1/2" x 1/2" Threaded;

Product Specifications

Conn. Size1/2" x 1/2" Threaded
Model #9DM3
Shipping Weight1.10
Shipping Width2.60
Shipping Length5.98
Shipping Height2.36

Compliance & Notes

Harmonize Code8481.90.9090

See catalog page 469 for additional notes and/or restrictions.

Warranty Information

WARRANTY - Johnstone Supply will administer and promptly process all warranties in accordance with the manufacturer's specific warranty policies and procedures.

WHOLESALE ONLY - Identification is required of purchasers. Possession of Johnstone's catalog does not constitute an offer to sell by Johnstone or the right to purchase from us.

RETURNS - All returns are subject to a restocking charge.

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See other: Watts - Backflow Preventers
See all: Watts Products

Mfg. #: 061935