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Series D637-P - Proportional Direct Driven Valve (DDV) for flow control with analog and optional fieldbus interface

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The Moog D637 Proportional Valve delivers high‑performance digital motion control through its advanced direct‑drive design and fully integrated electronics. Engineered for applications requiring fast dynamics, precise positioning, and exceptional reliability, the D637 leverages a permanent‑magnet linear force motor to achieve pressure‑independent performance and a strong actuation force.

Its digital control platform provides powerful functionality, including diagnostics, monitoring, configurable dynamic behavior, and seamless integration with modern fieldbus systems. Offering high flow capacity in an ISO 4401 Size 05 footprint, the D637 is ideal for demanding industrial environments that require both accuracy and adaptability. Backed by Moog’s decades‑long leadership in motion control, the D637 helps elevate machine performance while simplifying system integration and maintenance.

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Features:

  • High‑dynamic direct‑drive performance delivering strong actuation force and pressure‑independent dynamic response for superior motion control.
  • Fully integrated digital control electronics enable diagnostics, monitoring, and configurable dynamic behavior, enhancing machine performance and simplifying commissioning.
  • Fieldbus connectivity for modern automation: Optional interfaces such as CANopen, Profibus, and EtherCAT allow seamless integration into networked control architectures.
  • High flow capacity in a compact NG10 package with rated flows up to 100 L/min and maximum flows up to 180 L/min.
  • Fast step‑response time of approximately 14 ms ensures high‑bandwidth control performance for position, velocity, pressure, and force applications.
  • Energy‑efficient, pilot‑less operation by using direct drive technology to eliminate pilot oil consumption and reduce leakage, improving overall system efficiency and lowering long‑term operating costs.

 

Specifications
Control Functions Flow, Pressure, Flow & Pressure (p/Q), Axis (Position, Velocity, Force)
Mounting Pattern ISO 4401 Size 05 (NG10)
Hydraulic Data
Rated Flow at ∆p 35 bar (500 psi) per land up to 160 l/min  (42.3 gpm) 
Maximum Flow 180 l/min (47.6 gpm)
Maximum Operating Pressure Port P, A, B - 350 bar (5,000 psi)
Step Response Time for 0 to 100% Step 20 ms
Electrical Data
Supply Voltage 24 VDC (19 to 32 VDC)
Rated Signal Options +/-10 V, +/-10 mA and 4 to 20 mA
Electrical Connectors 6+PE, 11+PE

 

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