Controlling your fluid level with a pump or valve can easily be achieved by combining your SMD Fluid Controls product with a Double Pole Double Throw (DPDT) relay. By using two single point float level switches or a multilevel float switch, we can help you configure your tank system to automatically pump-up or pump-down to provide a more complete solution. This method allows you to automatically control a pump or valve to fill or drain as needed. Let us assist you by providing you with accessories to complete your application. Contact SMD to configure your application or see these figures below to design your own automatic level control using SMD fluid control products.