Orenco MFPBN-45FS Float Switch Assembly 45" Stem Field SetAll Orenco liquid level switches are UL listed and CSA certified for use in water or sewage. Floats are typically ordered in assemblies that include one or more floats mounted on a 1" PVC float stem. ABS float collars are used to provide secure mounting that is easily adjustable. Orenco Liquid Level Switch Assembly Typical Application Residential Septic Tank Effluent and Sewage Applications Float Switches are used to Signal Liquid Level Positions for