Bottom Distributor Basket for Fleck, Autotrol, Clack and Runxin Softener or Filter Valve Head Bottom distributor basket for Fleck, Clack, Autotrol and Runxin control valve heads that fits a standard riser tube (PVC riser pipe) of 3/4" diameter, (1.05" = 26.7mm OD). *Rise pipe not included. This bottom distributor basket strainer is designed to prevent any of the media from exiting your mineral tank. This bottom basket fits most of standard valve head brands for water softener, sand filter, carbon filter, DI Filter such as Fleck, Clack, Autotrol and Runxin. Fits manual valve heads, in - out heads. (Please check your exsiting valve head manual before purchasing). The bottom strainer screen works great for water softeners, iron filters, carbon filters, sediment filters, zeolite vessel, DI resin filter, pH filters, and all other backwashing and upflow tank filter systems. Glue type bottom basket.