4 WATTS LF909-DOSY-FS BACKFLOW PREVENTER

This 4 IN lead-free reduced pressure zone backflow preventer assembly prevents the reverse flow of polluted water from entering into the potable water supply due to back siphonage and or backpressure. It is ideal for protection in continuous pressure piping applications and at cross-connections identified as health hazards. This assembly consists of an epoxy coated cast iron body, domestic outside stem and yoke resilient seated gate valves, captured spring check valves, replaceable seats, top mounted test cocks, and a field reversible pressure differential relief valve. The coating on this backflow assembly uses ArmorTek, a patented 3-part advanced epoxy coating system designed to limit both microbial induced (MIC) and exposed metal substrate corrosion. This backflow assembly contains a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve. When activated through an add-on sensor connection kit, the flood sensor relays a signal that triggers notification of potential flooding to service personnel. The add-on sensor connection kit is available for building management systems and cellular communication.

Watts Reduced Pressure Zone Assembly With Resilient Seated Shutoff Valve And Flood Sensor, Type: Backflow Preventer, Reduced Pressure Zone Assembly With Resilient Seated Shutoff Valve And Flood Sensor, Series/Model: Series LF909 Large/Model LF909-DOSY-FS, 4 IN Nominal, Connection Type: Flanged Joint, 175 PSI, 33 - 110 DEG F, Cast Iron Body, Tee Handle Operator, Stainless Steel Trim, Stainless Steel Seat, Finish/Color: Epoxy Coated, Industry Standards: ASSE 1013, CSA B64.4, FM Approved, cULus Listed, AWWA C511-92, IAPMO PS-31 Certified, SBCCI, USC Manual For Cross-Connection Control, Certified To ANSI/NSF Standard 61-G, 67-7/16 IN Width, Lead Free: Yes, 470.000 LB Weight

• Features a flood sensor with SentryPlus Alert technology to detect excessive water discharges from the relief valve
• Alert features available with add-on sensor connection kit
• Utilizes advanced ArmorTek coating technology to resist corrosion of internals
• Cast iron body construction with patented 3-part advanced epoxy coating system designed to limit both microbial induced (MIC) and exposed metal substrate corrosion
• Unique patented air-in and water-out design provides high capacity relief valve discharge performance during emergency conditions
• Domestic outside stem and yoke gate valves

• Brochure/Catalog Name https://www.macombgroup.com//ASSETS/DOCUMENTS/ITEMS/EN/WATTSLF909DOSY10_Broc.pdf
• Installation Instruction Name https://www.macombgroup.com//ASSETS/DOCUMENTS/ITEMS/EN/WATTSLF909DOSY10_Inst.pdf
• Specification Name https://www.macombgroup.com//ASSETS/DOCUMENTS/ITEMS/EN/WATTSLF909DOSY10_Spec.pdf