Abstract: A flow switch for a high pressure washing system or other flow-related system is disclosed. The flow switch switches from an open to a closed position in the presence of adequate flow in a water or other fluid-carrying pipe. The flow switch includes a cartridge body, a sensor, a plunger, a magnet, and a spring. The cartridge body has an inlet port and an outlet port which allows fluid to flow into the cartridge body, through a flow chamber, and out of the cartridge body. The cartridge body also has a sensor chamber for accommodating the sensor. The sensor is positioned within the sensor chamber and is used to determine whether fluid is flowing through the flow chamber. A plunger is positioned within the flow chamber, and is responsive to fluid flow. Between the plunger and the sensor is a spring. The spring prevents the plunger from coming in close proximity to the sensor absent fluid flow.

Abstract: A stackable crate for transporting potted plants and the like includes opposing trays spaced apart by support structures. The trays form a top and bottom for the stackable crate. Each of the trays have side walls and end walls. The side walls are orthogonal to the end walls to thereby define four corners for the opposing trays. Each of the support structures has a plurality of upstanding panels which define interior and exterior walls for the stackable crate. Two of the upstanding panels are parallel and joined at their ends by one other upstanding panel of the plurality of upstanding panels so to form corners for the support structures. At least one of the corners so formed is an exterior corner for the stackable crate. The support structures are configured relative to the opposing trays such that each of the exterior corners are in substantial abutting alignment with each of the corners of the opposing trays to thereby form substantially closed ends and partially open sides for the stackable crate.