Hydraulic Proportional – 4WSE3E (16,25, 32) Servo

Flows to 1000 Lpm at 70 bar ?p
Sleeve/Spool in main stage
Cast body reduces weight & cost
Long life with HFC-water glycol, at high pressures
Small Signal Response 100 to 140 Hz @ -90 degree

So Many Proportional and Servo Valves
Where do I begin?

Most Important Issues Are
– Flow Requirement (Easy to Define)
* Cycle Time or Desired Actuator Speed
* Limits by Pump Flow, HP, Budget

Dynamic Performance
– Acceleration
– Repeatable Deceleration
– Fast and Accurate (Productivity)
– Especially in Closed Loop Applications
– Higher performance normally requires Closed Loop


Leave a Reply

Your email address will not be published. Required fields are marked *