To meet the higher-pressure requirements of today’s water infrastructure systems, all 2- to 12-inch Mueller UL/FM swing check valves are now rated at 350 psig cold working pressure (CWP).
In addition, 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.
