Hydraulic logic valve symbols

Learn about cartridge poppet logic valve symbols

Logic control valve symbols

logic valve symbol

Logic valves come in many different forms so we've only tried to cover a few of the main types here.

Top left is a directional control cartridge poppet valve with a 1:1 ratio, as shown by the straight nature of the spool/poppet body.

Top right is a directional control cartridge poppet valve with an area ratio =< 0.7

Bottom left is a directional control cartridge poppet valve with an area ratio > 0.7

Bottom right is a directional control cartridge poppet valve with an area ratio =< 0.7 but with a damped / throttle nose.

Learn more about logic valves