The Series 3 mechanically operated sensor valve, also called a “whisker valve,” is designed to be used as a limit switch in applications in which very low actuation forces and high-flow rates are required. The actuation force of the valve’s mechanical lever is less than 0.5 lb (2 N) at 90-psi operating pressure. The actuation sensitivity may be increased by adding a 3-mm-dia. “whisker rod” to the predrilled hole at the end of the lever. When the valve’s mechanical lever is actuated, it releases an internal pilot signal to atmosphere. The spool plunger’s depressurization allows the internal mechanical spring to shift the valve spool.
