Abstract: A system for automatically controlling a pumping unit used in fire suppression comprises a pumping unit, a water flow sensor and a pump controller. The pumping unit has a pump with a suction inlet configured to receive water from an upstream pumping unit and an engine to run the pump. The water flow sensor senses water flow into the suction inlet of the pumping unit. The pump controller receives a water flow sensor signal from the water flow sensor and controls an on/off state of the engine based on the water flow sensor signal.

Abstract: A backpack adapter comprising a generally L-shaped frame having a user side and a load side. The user side is provided with at least two coupling means for coupling a shoulder strap means thereon, the coupling means being spaced apart from each other. The L-shaped frame comprises a top L portion and a bottom L portion and the shoulder strap assembly is placed on either coupling means in order to either have the bottom L portion closer to the ground than the top L portion or reversibly have the top L portion positioned closer to the ground. The adapter can be used in at least two significantly different configurations: one by which the bottom L portion is used to carry a load on an upper side of said bottom L portion, the other by which the bottom L portion is used as a rack from which objects are hung.

Abstract: Methods and systems for a flexible hose assembly are provided. The flexible hose assembly includes a core tube including a substantially fluid-impervious body including an inner surface and an outer surface, and an aramid sleeve including aramid yarn, the aramid sleeve circumferentially covering the core tube.

Abstract: A method and apparatus are disclosed for controlling a relay pumping setup comprising an upstream pumping unit for pumping a liquid into a relay reservoir and a downstream pumping unit for pumping from said relay reservoir to a given location, the method comprising receiving a relay reservoir liquid level indication indicative of a liquid level in the relay reservoir and providing a control signal to at least one of the upstream pumping unit and the downstream pumping unit depending on the received relay reservoir liquid level indication.

Abstract: A method and apparatus are disclosed for filtering out particles in a fluid, the method comprising providing the fluid, creating a turbulent flow in the fluid, and collecting the particles.