Product Details

MOOG 072-559A is a two-stage mechanical feedback electro-hydraulic servo valve from MOOG 72 series. It adopts dry torque motor and dual-nozzle flapper pilot stage structure, featuring high sensitivity, fast dynamic response and low hysteresis, which is widely applied in power plant turbine DEH control systems and precision hydraulic closed-loop control. This moog servo valve uses mechanical spool feedback design to maintain stable flow output without electronic position feedback. A replaceable first-stage filter is integrated inside the valve body, which can intercept solid contaminants in hydraulic oil, simplify field maintenance and reduce equipment downtime caused by oil pollution. The valve is compatible with fire-resistant hydraulic fluid, which is the typical medium used in turbine control systems. It accepts standard analog current control signal, continuously adjusting the spool opening and converting electrical command signals into proportional hydraulic flow output to accurately control displacement, speed and force of hydraulic actuators. The valve body is manufactured with high-strength alloy material and anti-corrosion surface treatment, and can operate reliably under long cyclic working conditions. This electro-hydraulic valve is mainly used in steam turbine DEH regulation systems, power generation equipment, material fatigue test benches and other heavy-duty hydraulic control scenarios. It can work with MOOG motion controllers to build complete closed-loop electro-hydraulic control systems for high stability power control projects.

Brand: MOOG

Model: 072-559A

Series: 72 Series

Product Type: Two-stage Mechanical Feedback Electro-hydraulic Servo Valve

Structure: Dry torque motor, dual-nozzle flapper pilot stage

Feedback Type: Mechanical spool feedback

Control Signal: Analog current signal

Max Working Pressure: 350 bar (5000 psi)

Built-in Component: Replaceable first-stage filter

Fluid Medium: Fire-resistant hydraulic fluid, mineral oil

Application: Steam turbine DEH system,power generation equipment,material fatigue test bench