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maritime DC & PPE Information Center
1 3/4" x 50' Hose  (For submarine use)
NSN 4210-01-143-1404
(Hose Assembly, Nonmetalli)


The 1 3/4-inch by 50-foot synthetic double jacket soft hose is more efficient than the 1 1/2 inch hose, has less friction/higher volume flow rate and uses 1 1/2-inch NPSH fittings. It weighs approximately 28 pounds. The hose is manufactured to meet the requirements of MIL-H-24606 (14-SN6-D 1-¾-inch); maximum operating pressure is 270 psi with optimum hose handling occurring between 90 to 150 psi. Pressures above 150 psi could create hazardous conditions causing loss of nozzle control. The requirement for 1 3/4-inch hoses is optional and should be ordered in place of the 1 1/2-inch by 50-foot fire hose as necessary.

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