Pneumatic solenoid valves can be categorized into two basic types, Direct Acting and Pilot Operated, each with characteristics and advantages, depending on your requirements.
Direct Acting Pneumatic
Solenoid Valve advantages:
• Capable
of operation under a full pressure range, including low pressure and vacuum.
• Simple,
reliable construction with few parts. Low cost.
• More
tolerant in poor or unstable media conditions.
• Versatile,
and valves can be tailored to specific applications.
Pilot Operated Solenoid Valves use
a Direct Acting Solenoid Valve as a pilot operator. The pilot operator
functions to shift a larger directional control valve of piston poppet or
spool design. Pilot Operated Pneumatic Solenoid Valves advantages:
•Designed primarily for efficient control of air cylinders &
air actuators.
•Achieves high flow capacity relative to physical size.
•Consumes less current (amperage) relative to flow capacity.
•Many configurations to select from, particularly in four
way functions.
