Technical Specifications Supply voltage: 24 V DC ±10%; control input: 4–20 mA analog; hydraulic supply pressure: 100–250 psi; maximum flow rating: 12 gpm at 100 psi differential; pressure rating: 300 psi maximum; operating temperature range: -40 °C to +80 °C; enclosure rating: IP65; control linearity: ±2% full scale; hysteresis: < 3% full scale.
Functional Features Analog proportional flow control; solenoid pilot actuation; zero and span adjustment via potentiometers; pressure-compensated flow regulation; built-in 10 micron inlet filter; soft shift response for stable actuation.
Application Scenarios Steam turbine governor control, hydro turbine wicket gate actuation, engine hydraulic fuel control, industrial hydraulic servo systems, process valve position control.
Performance Parameters Step response time: < 150 ms for 100% stroke; flow repeatability: ±1% full scale; null drift: < 1.5% per 10 °C; internal leakage: < 4% of full flow.
Material Composition Ductile iron valve body, stainless steel spool and sleeve, nitrile rubber seals, solenoid coil with copper winding, aluminum solenoid housing.
Structural Characteristics Subplate or inline mounting configuration; side-mounted solenoid assembly; top-mounted adjustment screws for zero and span; integral inlet filter; standard SAE hydraulic ports.
Working Principle The analog control signal varies current through the solenoid coil, creating proportional magnetic force that shifts the valve spool against spring force. Spool position regulates hydraulic flow direction and rate proportionally to the input signal, delivering controlled hydraulic power to the actuator.
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