A high tension withstanding pull hose coupling including a first tubular water inlet pipe assembly mounted on a travelling support and including a rear inlet end opening outwardly in the direction opposite to the direction of movement of the support. The inlet end of the water inlet pipe assembly defines downstream tapering outer frusto-conical wedge surfaces and a wedge sleeve is loosely telescoped over the inlet end and includes downstream tapering inner frusto-conical wedge surfaces. An elongated tubular hose includes an outlet end telescoped over the outer wedge surfaces of the water inlet pipe assembly and the sleeve is telescoped over the hose outlet end with the wall portions of the hose outlet end clamped between the inner and outer conical surfaces of the sleeve and water inlet pipe assembly.