5100-102E, USDA FOREST SERVICE SPECIFICATION: COUPLINGS, FIRE AND SUCTION HOSE (JAN-2007)

5100-102E, USDA FOREST SERVICE SPECIFICATION: COUPLINGS, FIRE AND SUCTION HOSE (JAN-2007)., The couplings described in this specification are for use on USDA Forest Service fire hose and suction hose. Coupling thread series designations are 1 inch 11-1/2 NPSH, 1-1/2 inches 9 NH and 2-1/2 inches 7-1/2 NH.