FEBCO 3/4″ 805YB – DC BACKFLOW ASSEMBLY, LESS BALL VALVES *ASSEMBLY BODY ONLY* (CONTAINS LEAD)

Description

This device consists of two independently operating poppet type check valves. Each check valve is spring loaded to maintain a minimum of 1 PSIG differential pressure across the check in a no-flow condition. In a normal flow condition the checks open an amount corresponding to the flow rate. During a backflow (backpressure) situation the seat discs close and seal to prevent any flow reversal. Sizes 3/4″ through 2″ (805Y, 805YB, 805YS, 805YR) include two spring-loaded, Y-pattern bronze check valves, two bronze shut-off valves and four testcocks for field testing. All valves are threaded type and the unit is shipped completely assembled.