Fire Hydrant Backflow Preventer Inlet Threads_NH / NST For common combustible fires in

For common combustible fires in businesses such as retail stores

both constructed of 2" nylon webbing

6" NH / NST male threads

easy to handle and fitted with threaded couplings

and manufacturing processes such as painting

Fire Hydrant Backflow Preventer Inlet Threads_NH / NST For common combustible fires inDouble check valves back flow prevention assembly is used to protect water supplies from contamination or pollution due to back flow. Three top mounted test cocks ensure easy access during repair and maintenance. Consists of two spring loaded poppet type check valves and a mechanically independent, hydraulically dependent pressure differential relief valve. Designed to give maximum protection against back flow caused by back pressure or back siphonage