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The outside diameter of a 1
If debris larger than the drilled holes should enter from the dry hydrant outlet located roadside it would not be able to be flushed out into the water source
National Stock Number (NSN 4210-00-975-2969)
5 inch NPT or NPSH male hose coupling is 1
Female 1 1/2 inch NH
4" Storz Coupling Set Origin_Made in the USA The outside diameter of aThese 4 inch storz replacement couplings come complete with hose shank, removable collars and set screws. Collar screws take a 5 16 inch allen wrench. These will fit most rubber covered LDH firefighting grade supply hose and are the OEM couplings for Key Fire Hose Pro Flow LDH. Storz couplings comes as a set with one coupling for each hose end. Couplings will NOT fit discharge hoses such as the common blue and red discharge hose which are thinner