This 1/2 IN dual check valve backflow preventer with atmospheric vent helps prevent 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.

Dual Check Valve With Intermediate Atmospheric Vent, Series/Model: Series 9D M3, Nominal Size: 1/2 IN, Connection Type: FNPT, Pressure Rating: 175 PSI, Temperature Rating: 33 - 250 DEG F, Forged Brass Body Material, Industry Standards: CSA Certified, ASSE 1012, CSA B64, NYC BSA 104-75-SM, 4-15/16 IN Width, 2-9/16 IN Height, Lead Free: No

• Horizontal or vertical installation
• Stainless steel internal parts
• Compact design
• Forged brass body for durability

• Brochure/Catalog https://macombstage.cimm2.com//ASSETS/DOCUMENTS/ITEMS/EN/050LF007QTBP_Broc.pdf
• Warranty Information https://macombstage.cimm2.com//ASSETS/DOCUMENTS/ITEMS/EN/Watts_0009108_Warranty_Information.pdf
• Instruction/Installation Manual https://macombstage.cimm2.com//ASSETS/DOCUMENTS/ITEMS/EN/Watts_0061888_Instruction_Installation_Manual.pdf
• Specification Sheet https://macombstage.cimm2.com//ASSETS/DOCUMENTS/ITEMS/EN/Watts_0061888_Specification_Sheet.pdf