Watts 0061935 9D Series , 9D M3 Backflow Preventer With Atmospheric Vent , 1/2 in Nominal , Union FNPT x Union Joint End Style , Forged Brass Body , Dual Check , Domestic


Backflow Preventers
MFG #: 0061935 Product ID:900557
Famous Supply
  • Dimensions: 4-15/16 in W x 2-9/16 in H
  • Media: Water
  • Pressure Rating: 175 psi
  • Series: 9D Series
  • Temperature Rating: 250 deg f
  • Nominal Size: 1/2 in
  • End Style: Union FNPT x Union Joint
  • Body Material: Forged Brass
  • Backflow Type: Dual Check
  • Domestic/Import: Domestic
Series 9D is specially made for smaller supply lines and ideally suited for laboratory equipment, processing tanks, sterilizers, dairy equipment and similar applications. It is particularly recommended for boiler feed lines to prevent backflow when supply pressure falls below system pressure. 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 in and 3/4 in. Drain is 1/2 in thread connection.
  • Features
  • Warranty
  • Standards & Approvals
  • Application
True line-sized construction allows the check modules to open further allowing dirt and debris to pass more freely reducing check fouling
Stainless steel internal parts
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
Durable, tight seating rubber check valve assemblies
ASSE 1012
PROP65: 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 non-health hazard applications in smaller supply lines, such as laboratory equipment, processing tanks, sterilizers, dairy equipment, and specifically for boiler feed lines