Series D636 and D637 - Direct Driven Valves (DDV) for flow control with analog and optional fieldbus interface

The Moog D636 and D636 series valves are direct operated servo valves with integrated electronics and optional fieldbus interface. The servo valves of the D636 and Moog D637 series offer a direct drive with a permanent magnet linear motor, which moves the valve spool directly and eliminates the need for pilot oil. They are available in nominal sizes 03 (D636) and 05 (D637) in accordance with ISO 4401.

The servo valves were developed with the most demanding customer requirements in mind and are characterized by high functional flexibility, pressure-independent dynamics, high actuating force and low power consumption.

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Features:

  • Directly driven by linear force motor with no pilot flow required
  • Linear force motor with high force range, offering no flow limitations
  • Directly driven design means pressure-independent dynamic performance
  • Low current consumption at and near hydraulic null

 

Specifications
  D636 D637
Control Functions Flow, Pressure, Flow&Pressure (p/Q), Pressure Compensated Flow, Axis (Position, Velocity, Force)
Mounting Pattern ISO 4401 Size 03 (NG6) ISO 4401 Size 05 (NG10)
Hydraulic Data
Rated Flow at ∆p 35 bar (500 psi) per land up to 40 l/min  (10.6 gpm)  up to 100 l/min (26.4 gpm)
Maximum Flow 75 l/min (19.8 gpm) 180 l/min (47 gpm)
Maximum Operating Pressure Port P, A, B - 350 bar (5,000 psi)
Port T without Y - 50 bar (725 psi)
Port T with Y - 350 bar (3,000 psi) Port T with Y - 210 bar (3,000 psi)
Step Response Time for 0 to 100% Step 8 ms 14 ms
Electrical Data
Supply Voltage 24 VDC (18 to 32 VDC)
Rated Signal Options +/-10 V, +/-10 mA and 4 to 20 mA
Electrical Connectors 6+PE, 11+PE
Options
Interfaces Fieldbus Interface
Additional Analoge Transducer Interfaces