Description
Product introduction
The MOOG D662‑4709 (D02HYBW5NSX4‑O) is a high‑performance pilot‑operated servo‑proportional valve belonging to MOOG’s advanced D66x family. Designed for demanding industrial automation and motion‑control solutions, the D662‑4709 integrates a robust pilot stage with closed‑loop electronics and precision spool design. It is engineered to convert analog command signals into finely controlled hydraulic flow, making it ideal for applications that require both high throughput and accurate regulation.
As a D662‑series model, the D662‑4709 is tailored for higher flow and larger actuator loads compared to the smaller size valves. Its ISO 4401 Size 07 (NG16) mounting footprint ensures compatibility with standard hydraulic manifolds and simplifies replacement or retrofit. With a command interface suited to ±10 V or ±10 mA inputs, the valve slots cleanly into PLC or DCS‑based control loops, allowing machine builders and system integrators to deliver sophisticated hydraulic regulation with high repeatability.
In modern automation systems, the D662‑4709 acts as the hydraulic “engine” of motion control: receiving electrical set‑points, interpreting them through onboard electronics, and driving hydraulic actuators with precision. By using this valve, you achieve improved responsiveness, tighter control loops, fewer hydraulic stages and better overall system efficiency. The MOOG D662‑4709 (D02HYBW5NSX4‑O) thus becomes a key enabler for machine performance, flexibility and longevity.
Core advantages and technical highlights
Functional innovation: The D662‑4709 exchanges older open‑loop architectures for a closed‑loop pilot design with onboard feedback, enabling significantly lower hysteresis, better linearity and enhanced repeatability. The integrated electronics monitor spool position and correct dynamically for the command signal, meaning the valve delivers consistent output even as fluid conditions or ambient temperature vary.
High performance: Rated for up to ~350 bar and flows in the range of ~150‑250 L/min (depending on spool variant), this valve supports demanding actuator loads and fast motion sequences. Its analog command input (±10 V/±10 mA) ensures compatibility with standard industrial controllers, while the NG16 body size allows higher flows without moving to much larger valve footprints.
Reliability and robustness: Being part of MOOG’s D66x series, the D662‑4709 benefits from mature design practices—such as the ServoJet® pilot stage concept and high‑quality spool/bushing assembly. These result in superior contamination tolerance, reduced null shift over time and consistent long‑term performance under industrial duty cycles
Integration and ease of use: The valve’s standard mounting interface (ISO 4401 Size 07) and command signal standardization simplify machine design, retrofit drop‑in, and spare‑parts logistics. For users upgrading from older valve families, the D662‑4709 offers a clear upgrade path with minimal redesign.
System architecture simplification: By incorporating the pilot, main spool and electronics into one compact module, the D662‑4709 reduces the number of hydraulic control components. This leads to fewer leak paths, simplified piping, lower maintenance overhead and reduced total cost of ownership.
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