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Prevents polluted water from entering your potable water supply due to back-siphonage or backpressure, in accordance with national plumbing codes and water authority requirements
Ideal for continuous pressure piping applications, at cross-connections identified as non-health hazards and for contaminants at service line entrances
Features a lead-free, cast copper silicon alloy body; NPT end connections; quarter-turn ball valve shutoffs; top mounted test cocks; two in-line independent positive seating check modules; captured stainless steel springs, and replaceable check discs and seats
Compact modular design and single access cover facilitate easy maintenance and in-line repairs
Size is 6.5 x 6.5 x 17.5 inches
The Febco 0683043 LF850-QT Double Check Backflow Valve Quarter Turn Shutoff works within a temperature range of 32 to 140 degrees F. Maximum working pressure is 175 PSI and hydrostatic test pressure is 350Psi. Weighs 23.4 pounds. From the manufacturer: NPT ANSI/asme B1.20.12. Complies with lead free installation requirements.