3/4" x 3/4", FPT Union x Union, 175 PSI, 20 GPM, Bronze, In-Line, Compact, Dual Check Valve Backflow Preventer with Intermediate Atmospheric Vent
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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; 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; Meets Requirements of the Buy American Act
Dual Check Valve Backflow Preventer; Type Atmospheric Vent, Dual Check Valve, Continuous Pressure; Valve Configuration In-Line; Nominal Size 3/4 Inch x 3/4 Inch; End Connection Union Female Threaded x Union Threaded; End to End Distance 4-1/2 Inch; Body Material Brass; Disc/Poppet Material Rubber; Seat Material Rubber; Temperature Rating 33 to 250 Deg F; Pressure Rating 175 PSI; Inclusions/Features Strainer; Exclusions Shut-Off Valve, Cap and Tether, Elbow Fitting, Hot and Harsh Water, Polymer Coating, Bypass, Hydrant Connection; Application Non-Health Hazard; Protection Type Backpressure and Backsiphonage
This 3/4 inch dual check valve backflow preventer with atmospheric vent prevents the reverse flow of hot or cold polluted water from entering into the potable water supply. This valve is designed for continuous pressure non-health hazard applications in smaller supply lines, such as laboratory equipment, processing tanks, sterilizers, dairy equipment, and specifically for boiler feed lines. It consists of a brass body with stainless steel internal parts, integral strainer, two durable tight seating rubber check valves, and NPT female inlet and outlet connections.
