Abstract: A foam generating apparatus can be attached to a water bearing hose and comprises an eductor nozzle to receive water and foam concentrate, and a foam generating nozzle to discharge a foam/water mixture therethrough. A foam concentrate conduit delivers concentrate to a manifold extending peripherally around a suction port of the eductor nozzle, and foam concentrate is drawn into the eductor nozzle to mix with water and to be discharged as a foam/water mixture to the foam generating nozzle. The nozzle has an agitator jet orifice for agitating the mixture, and an air entrainment opening to admit air into the agitated mixture. The agitator jet orifice has inlet and outlet jet openings interconnected in series, the outlet jet opening being larger than the inlet jet opening to provide a diverging passage with at least one step between the inlet and outlet jet openings to agitate the flow.

Abstract: A foam generating apparatus can be attached to a water bearing hose and comprises an eductor nozzle to receive water and foam concentrate, and a foam generating nozzle to discharge a foam/water mixture therethrough. A foam concentrate conduit delivers concentrate to the eductor nozzle and has a concentrate valve to control flow therethrough, e.g. a one-way check valve to prevent water from passing outwardly through the foam concentrate conduit to dilute the concentrate. A delivery manifold communicates the foam concentrate conduit with a suction port of the eductor nozzle and extends peripherally around the suction port to permit foam concentrate to be drawn into the eductor nozzle for discharge therethrough. The foam generating nozzle receives the foam/water mixture and has air entrainment openings to admit air into the mixture and an agitator jet orifice for agitating the mixture located generally adjacent the air entrainment openings.

Abstract: Hose winding apparatus comprises a first portion having a body and a first handle extending therefrom, and a second portion having a reel portion and a second handle cooperating with the reel portion. Each portion has reel journalling structure for journalling the first and second portions for relative rotation about a reel axis. A latching structure releasably latches together the first and second portions to permit the said relative rotation without unintentional separation of the first and second portions. A wound-up hose coil is retained tightly wound-up after the removal from the reel portion by fitting a resilient band to extend across opposite locations of the reel portion, and winding the hose onto the reel portion with a first face of the wound-up hose being adjacent a first length of the band. This is followed by drawing and stretching a second length of the band from the reel, and positioning the second length closely adjacent a second face of the coil.

Abstract: A pump apparatus dispenses a liquid and additive mixture and has a pump cylinder with intake and discharge ports with associated valves. An additive supply communicates with the pump cylinder to supply additive with liquid drawn into the pump during an intake stroke prior to a discharge stroke during which a mixture of additive and liquid is discharged from the pump. The additive is mixed in the liquid prior to passing into the intake port and is metered to attain the desired concentration. An aerating nozzle receives mixture discharged from the discharge port to produce foam for various applications, such as fire fighting. The aerating nozzle has a restrictor orifice located adjacent and upstream from air entainment opening in the nozzle. The restrictor orifice can be a simple non-tapered cylindrical passage, but for improved foam generation, the orifice can be a diverging passage with a step between inlet and outlet portions of the passage.