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Product details

Series 9D is suitable for use on hot or cold water and can be used under continuous pressure. It features a primary check valve utilizing a rubber disc seating against a mating rubber part to ensure tight closing. A secondary check valve utilizes a rubber disc-to-metal seating. In the event of fouling of the downstream check valve, leakage would be vented to atmosphere through the vent port thereby safeguarding the potable water system. Construction is brass body with stainless steel working parts, integral strainer and durable rubber discs. Female union inlet and outlet connections. Sizes 1/2" (15 mm) and 3/4" (20 mm). Drain is 1/2" (15 mm) thread connection.

  • Dual check valves with intermediate atmospheric vent prevent the reverse flow of hot or cold polluted water from entering into the potable water supply
  • Consists of an integral strainer and two durable, tight-sealing, check valves
  • True line-sized construction allows the check modules to open further allowing dirt and debris to pass more freely reducing check fouling
  • Maximum flow at low pressure drop
  • Furnished with union connections to facilitate removal and replacement for maintenance
  • Compact for economy combined with performance
  • Design simplicity for easy maintenance
  • Can be installed vertically or horizontally
  • Technical Specs

    SKU: 84234
    Model: 9DM3-S
    pressure rating: 25 - 175 psi connection size: 1/2"
    length: 4-3/8" temperature rating: 3 to 250 deg F
    product type: Backflow Preventers type: Non-Potable
    product upc code: 098268028508 material: Forged Brass
    prop65 warning: California Proposition 65 Warning, This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to series: 9D Series
    country of origin: US connection type: Union End Solder
    height: 2-9/16 Inch

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