Abstract: A control system has been invented for feeding settled sludge to two filter presses without the use of a surge tank. The system provides for constant feed rates from a solids settling tank, even as filter press capacity decays and the filter press is taken off stream for dumping. This is accomplished by providing two modes of operation. The first mode provides for the feeding of a single filter press. The second mode provides control when both filter presses are fed. The second mode is actuated by elevated pressure differential across a filter press, which signals the valve to move, to bring a second filter press on line while compensating for flow rate and finally shuts down the first filter press after a timed interval.The need for a surge drum is eliminated by maintaining continuous upstream and downstream operation of the filter presses in a sludge dewatering process.