Abstract: A fluid treatment system, includes a pressurizable tank, a compressed air source, and a float disposed inside the tank, the float rising or falling in response to a level of fluid in the tank; and a float-actuated switch assembly connected to the float. The float-actuated switch assembly starts introduction of compressed air into the tank from the compressed air source. A purge valve may be provided to allow fluid to flow out of the tank during the introduction of compressed air into the tank. The float-actuated switch assembly may include a magnetic switch.

Abstract: A lifting system for moving mobile homes that includes wheeled jack assemblies, jack units assembled from such assemblies and a segmented track for supporting such assemblies and units. Each jack assembly preferably includes a jack rollingly carried on wheels, and a roller head operatively connected to the working end of the jack to move from a lowered position to a raised position. The wheels allow lateral adjustment of the home, while the roller head allows longitudinal adjustment of the home. In the preferred embodiment, each jack unit includes two jack assemblies, with one of the assemblies further including a drive motor operatively connected to its wheels. Furthermore, the assemblies are interconnected by a hydraulic power unit in the form of a housing that encloses and protects the hydraulics for controlling each jack and drive motor. Each segment in the segmented track generally includes a pair of rails structurally interconnected, with a hole formed adjacent each end of the segment.