Full 5/2 & 3/2 range - pilot-operated, direct-acting, hand-lever, poppet and Namur designs.
A solenoid or directional control valve switches compressed air to a pneumatic actuator, determining when and which way it moves - the electrical-to-pneumatic interface in a valve automation system.
We supply the Duncan range end to end: solenoid-piloted 5/2 and 3/2 directional valves for actuator control, manually-operated hand and foot lever valves, and the midget and direct-acting range used for smaller cylinders and remote pilot duty.
Pilot the actuator - switch supply air between actuator ports to open, close or hold a valve.
High-performance miniature-size directional valve in ¼" and 1/8" port sizes, 5/2 and 3/2 versions.
IllustrationSingle-coil directional valve, spring-return to the de-energised position.
IllustrationTwo-coil directional valve - holds last position on power loss (memory/detent action).
Sliding-spool internal design for directional switching.
Poppet-seal internal design - fast response, good for low-lubrication air.
Manually switched directional valve for local, non-electric control.
IllustrationFoot-pedal switched directional valve for hands-free local control.
IllustrationManually actuated push-pull directional valve.
IllustrationAir-piloted directional valve for larger port sizes where direct solenoid actuation isn’t practical.
Direct-acting 2-way and 3-way valves for midget cylinders and remote pilot control of a main valve.
Direct-acting 2-way and 3-way solenoid valves used to operate midget cylinders or for remote control of a main valve.
IllustrationDirect-acting valve with no pilot stage - switches at any pressure including zero differential.
IllustrationPilot-operated valve using a diaphragm for the main flow path - higher flow capacity than direct-acting.
IllustrationFast-firing diaphragm valve for reverse-jet cleaning of bag filters and dust collectors.
IllustrationAir-piloted (non-electric) limit switch for position sensing in intrinsically-safe or electricity-free zones.
It denotes 5 ports and 2 switching positions - the standard configuration for piloting a double-acting actuator. A "3/2" valve has 3 ports and 2 positions, typically used for single-acting actuators or simple on/off air switching.
240 VAC and 110 VAC are standard, with 24 VDC and other voltages available on request - tell us your control-panel voltage and we’ll match the coil.
Send the duty, media and sizing you have - we target a quote inside 24 hours.
