Description
MOOG CZ1008DVA
Technical Specifications Electrical command input ±10 V DC; integrated on-board drive electronics; spring-centered spool returns to neutral on loss of power; two-stage pilot control with torque motor; rated flow matched to model calibration; operating hydraulic fluid temperature -20 ℃ to +80 ℃; recommended fluid cleanliness ISO 4406; electrical connector rated for industrial cabinet wiring; vibration resistance for machinery mounting.
Functional Features High dynamic response for closed-loop hydraulic control; internal spool position feedback stabilises valve gain; built-in gain and offset adjustment; continuous spool fault monitoring; zero-lap spool design reduces static positioning error; fail-safe spring centering cuts actuator motion when command signal is lost.
Application Scenarios Material fatigue test machines, flight simulator hydraulic motion platforms, metal forming hydraulic presses, steam turbine hydraulic bypass control, structural seismic test rigs.
Material Composition Valve body: precision machined high-strength alloy steel; torque motor magnetic assembly with permanent magnets; spool and sleeve hardened and lapped for minimal clearance; aluminium electronics housing; gold-plated electrical connector pins; high-temperature seal elastomers compatible with mineral hydraulic oil.
Structural Characteristics Monoblock hydraulic valve body with standard hydraulic port pattern; upper section houses torque motor pilot stage and integrated electronic amplifier; lower section contains main spool and sleeve assembly; electrical connector mounted on side of electronics housing.
Working Principle Analogue ±10 V command signal is processed by onboard amplifier and drives the torque motor. Torque motor deflects the pilot flapper-nozzle stage, creating differential pilot pressure that shifts the main spool. Spool displacement modulates hydraulic flow to actuator. Internal spool feedback closes the control loop to match spool position to electrical command.
Installation Requirements Mount valve with clean, filtered hydraulic supply meeting specified ISO cleanliness class; use compatible hydraulic fluid; route electrical command cable away from high-current power cables; torque hydraulic fittings to manufacturer specified value; perform zero and gain adjustment after installation.
Operation Notes Flush hydraulic circuit before valve commissioning to remove particulate contamination; do not apply command signal without pressurised supply fluid; inspect seals and connector pins during scheduled machine overhaul.
