Aluminum Heavy-Duty 4" NH / NST 45 Degree Elbow Hose Size (ID)_1" Hoses Double check valves back flow

Double check valves back flow prevention assembly is used to protect water supplies from contamination or pollution due to back flow

Equivalent part number - FM2020

This kit does include a plastic FDC debris cover

Sign mounts using 2 approximately 3/8" holes aligned vertically along the center line

Aluminum Heavy-Duty 4" NH / NST 45 Degree Elbow Hose Size (ID)_1" Hoses Double check valves back flowElbows are used on pump discharge valves or suction inlets to minimize hose kinking. Should also be used when flushing hydrants or other water systems to protect the inner liner of the discharge hose from water pressure or debris damage.