Cla-Cal CF1-C1 Float Control - Open Tank Type, PVC Float Rob and SSTL Float Stock # 8901601J-OTC Accurate Liquid Level Control Fully Hydraulic Operation Simple Design, Easy Maintenance No Lubrication Necessary No Gears, No Mechanical Linkage Between Valve and Control The Cla-Val Model CF1-C1 Float Control is a float-actuated, multiport pilot control which provides non-modulating, two-position, on-off operation. It is used primarily to operate remotely located Cla-Val valves requiring three-way or four-way pilot valve operation.Designed for used in open tanks, this control operates on a minimum level change of approximately one inch. Maximum level change is nineteen inches. This level adjustment can be located up to 111⁄2 feet from the control by adding float rod extensions.The float moves freely on the float rod. On rising liquid level, the float contacts the upper stop and lifts the float linkage to the "UP" position.As the liquid level lowers, the control stays in the "UP" position until the float contacts the lower stop. The control then shifts to the"DOWN" position.