Febco® MasterSeries® Lead Free Double Check Valve Assembly, In-Line Large Diameter, Series: LF850, 4 in Nominal, Flange, 10 to 175 psi Working, 32 to 140 deg F Continuous, Resilient Wedge Gate Valve Ball Valve/Gate Valve type, Ductile Iron Body, Fused Epoxy Coated, 46-1/4 in L
This 4 in lead free MasterSeries® double check valve assembly is designed to prevent the backflow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. Its compact modular design facilitates easy maintenance for in-line repairs. It is ideal for protection in continuous pressure piping applications and at cross-connections identified as non-health hazards and for other non-toxic contaminants at the service line entrance. This assembly consists of a fused epoxy ductile iron body, domestic outside stem and yoke resilient seated gate valves, top mounted test cocks, two in-line independent positive seating check modules, captured springs and replaceable check discs and seats.