Pressure Switch, 3-Way, Ruelco, 1/4", 50-450#

The Ruelco SS-2 high flow hydraulic pressure switch is a 3- way block-and-bleed valve that is operated by pressure acting on a piston opposing an adjustable spring force. It functions as either a normally closed or normally open valve, depending on which of the two inlet ports the in- strument pressure is supplied. These ports are marked as HI IN and LO IN on the switch body. The output port, marked OUT on the switch body, is the same for either mode of operation. Pressure applied to the sense port will cause the valve to operate.