Easily convert between – Sleeve/Spool rated Nominal Flow @1000 psi ?p – Proportional rated Nominal Flow @ 145 psi ?p • Servo to Proportional nominal…
Very Fast Stroke Solenoid – Directly Positions Spool – No Flapper/Nozzle – No Jet-pipes – No Pilot Leakage Spool and Sleeve Assembly – Zero Overlap…
VT-VETSY-1-1X/1-2-1-1-0/USA – R978050422 Includes 24vdc power supply with US power cord, 2 cables for 7-pin, servo adapter, VET tester
Valve frequency response @ -3dB amplitude Phase Lag @ -90 degrees
Time for spool transition given a stepped input Standard test conditions (fluid temp, pressure) may not match your application If only given a time, you…
Hysteresis is max. position error which depends on direction history Reversal Error is the smallest signal that moves spool in the opposite direction Response Sensitivity…
R-spool: Internal hydraulic regeneration – Combines B to P in spool! – Blocked center, so cylinder could creep R3-spool: Internal regen – connects B-to-P path…
W3-spool: hydraulic regeneration extends cylinder quickly. Rod side is blocked by B port. High pressure on rod end pushes flow over external check valve –…
W6-spool: improved W-spool – crossover all ports are closed (to stop) – then decompress at center, open 2% A to T and B to T…
Asymmetric spools like E1-, W1-, V1- – 2:1 flow area (4 notches vs. 2 notches) – For differential area cylinders Balances ?p across each flow…