Spool hydraulic directional control valve 79-200

pilotelectro-hydraulic3-way

Product description
Flow-control servo valves of the Moog Series 79 are spool-type valves for 3- and preferentially 4-way applications. These three-stage servo valves are designed for systems that require high flow rates and high power. They are suitable for electrohydraulic position, velocity, pressure or force control systems demanding high dynamic performance.

Features

• Three-stage flow-control servo valves for applications requiring high flow and high power
• High coil drive forces and robust design for extended service life
• Electrical feedback on the main spool for low hysteresis and excellent linearity
• Optional external pilot supply and return ports

Specifications
Hydraulic data
Rated flow*: 400 to 1000 l/min
Standard configurations: 400, 800, 1000 l/min
Max. operating pressure: 210, 310 or 350 bar

Performance data
100% step response**: 6 to 15 ms
Frequency response***: 55 to 110 Hz

Electrical data
Rated signal****: 8 to 50 mA
Standard configurations: 15, 40 mA

Physical data
Size (mounting pattern): Moog Standard
Weight: 16.1 kg
Additional options: Additional flow, pressure and other configuration options available

* @ ∆p 70 bar (1,000 psi)
** Response at 3,000 psi System Pressure
*** at 90° Phase Lag
**** Single Coil

Resources - literature and installation drawing

• Catalog: 79 Series Servo Valves
• Manual: 79-200 Series Servo Valves
• Installation drawing: 79-200 Series Servo Valve
• Product line overview: Feedback Servo Valves (Overview)
• Datasheet: Three Keys to Specifying Long‑Lived Servo Valves (Overview)
• Whitepaper: Designing Long‑Lived Servo Valves

Characteristics / Technical specifications

• Type: Three-stage flow-control servo valves
• Rated flow: 400–1000 l/min
• Standard flows: 400, 800, 1000 l/min
• Max. operating pressure: 210 / 310 / 350 bar
• 100% step response: 6–15 ms
• Frequency response: 55–110 Hz
• Rated electrical signal: 8–50 mA (standard 15 or 40 mA)
• Weight: 16.1 kg