Moog G772K620A Servo Valve

Description:

Advantages of the Moog G772K620A Servo Valve

High Precision & Resolution
The double‑nozzle pilot stage and precision-machined spool deliver high dynamics, low hysteresis, and very fine control.
Rugged, Long‑Life Design
Built for durability with robust materials, it supports long service life even under heavy-duty cyclic use.
Wide Fluid Compatibility
Compatible with a variety of good-quality hydraulic fluids, thanks to MOOG’s 2‑stage design.
Fail-Safe Operation
In the event of signal loss, the spool returns to a zero (neutral) position, enhancing safety in critical systems.
Flexible Deployment

- Field‑adjustable null bias for calibration.
- Option for intrinsically safe or explosion-proof variants for hazardous environments.
- Compact size: mass ~ 0.86 kg.

Parameter	Specification / Detail
Valve Type	2‑stage Servo Valve, Flow‑Control
Model / Series	G772K620A (G772 Series)
Pilot Stage	Nozzle‑Flapper (driven by dry torque motor)
Mounting Surface	ISO 10372‑03‑03‑0‑92
Operating Pressure (Max)	Up to 210 bar in 771/772/773 series per MOOG spec.
Flow Range	Up to ~57 L/min for 772 series per MOOG catalog.
Step Response (0–100%)	~4 ms (G772) per MOOG datasheet.
Frequency Response	~115 – 215 Hz for G772 series per MOOG.
Rated Electrical Signal	Configurable; typical proportional signal (e.g., ± mA) — depends on variant.
Seals / Materials	Fluorocarbon (FKM, e.g., Viton B), robust spool and body design.
Null Bias	Factory set; field‑adjustable.
Fail‑Safe Feature	Loss of electrical signal → zero spool position.
Certifications / Options	Option for intrinsically safe or explosion-proof versions.
Weight	~0.86 kg (1.9 lb).
Temperature Range	Storage: –40 to +60 °C; Operating: –40 to +135 °C (per one spec sheet)
Applications	Industrial motion control, test stands, power generation, hydraulics, simulators, etc.