In order to meet all the higher pressure requirements that exist for today’s water infrastructure systems, Mueller’s UL/FM swing check valves are now rated at 350 psig cold working pressure (CWP). The product line has been expanded to include 2-, 14-, and 16-inch sizes (with the largest two sizes still rated at 250 psig CWP).
Standard features of Mueller UL-listed, FM-approved check valve product line now include all ductile iron construction, bronze to BUNA seating, lifting rings, PN16 drilling, bosses for bypass connections and a drain plug. With a gravity operated, swing check design, the valves are designed to allow access to all part through the top of the unit.
Image courtesy of Mueller