It obtains that there is the free change of manifold for the fire hydrant of fire extinguishing because of diligent effort or obtains the free change of the fire hydrant manifold for fire extinguishing because of diligent effort

摘要

A swivel with, or for, a hydrant manifold for industrial fire fighting comprising a swivel providing an at least 6 inch flow conduit and preferably including mating male and female sleeves of stainless steel and preferably having at least two rings of stainless steel ball bearings and a location for an interior water seal.