Whisker Valve Controls Automated Machinery

Series 3 mechanically-operated sensor valve, also called a “whisker valve,” are used as a limit switch in applications where very low actuation forces and high-flow rates are required. Sensor valves are most commonly used to control automated machinery by detecting the presence, absence, passing, positioning, or end-of-travel of an object.

The actuation sensitivity, which is less than 0.5 lb (2N) at 90 psi, may be increased by adding a 3-mm dia. “whisker rod” to the pre-drilled hole at the end of the lever. When the mechanical lever of the Series 3 valve is actuated, it releases an internal pilot signal to atmosphere. The depressurization of the spool plunger allows the internal mechanical spring to shift the valve spool.