MARSHALL EXCELSIOR COMPANY MEC DOUBLE CHECK FILL VALVE, 3-1/4 IN. M. ACME X 3 IN. MNPT, INCLUDES CAP & CHAIN ASSEMBLY

High flow single & double back check valves provide back flow protection to container openings or liquid lines where flow is intended in one direction | Double check primary seat creates metal to metal seating surface | Double check secondary seat is a soft seat for a leak free seal | Maximum product flow achieved by full port and maximum stem travel design | All models feature a brass stem, stainless steel spring and bronze valve guide in body check assembly | For use with LP Gas Only|Built in hydrostatic relief valve|For use with LP Gas only|Primary seat creates metal to metal seating surface|Secondary seat bonded nitrile soft seat for a leak proof seal