General

• Series: D634 (ISO 4401 Size 05 / NG10)

• Type: Single‑stage direct‑drive servo valve (DDV), 24 VDC integrated electronics, LVDT spool closed‑loop

• Model 1019: Ultra‑high‑flow, high‑power version, optimized for large actuators and high‑force hydraulic systems; designed for maximum flow capacity with good dynamic stability and low noise.

Hydraulic Data

• Max pressure (P, A, B): 350 bar (5,000 psi)Moog Inc.

• Port T (no Y): 50 bar (725 psi); (with Y): 350 barMoog Inc.

• Rated flow (Δp = 35 bar/land): 80–100 L/min (21.1–26.4 gpm)

• Max flow: ≈185 L/min (48.8 gpm)

• Internal leakage: ≤0.50 L/min

• Fluid: Mineral oil ISO 11158 / DIN 51524

• Fluid temp: −20 … +80 °C

• Cleanliness: ISO 4406 18/15/12 (recommended 17/14/11)

Performance (Typical for 1019)

• Step response (0→100%): ≈20 msMoog Inc.

• Hysteresis: <0.5% FS

• Resolution: <0.12% FS

• Null drift (ΔT = 60 K): <1.2%

• Frequency response (−3 dB): ≥70 Hz

Electrical Data

• Supply: 24 VDC (18–32 VDC)Moog Inc.

• Max current: 2.8 A

• Control signals (jumper select): ±10 V, ±10 mA, 4–20 mAMoog Inc.

• Spool feedback output: 0–10 VDC

• Connector: M18, 6+PE, IP65Moog Inc.

• Ambient temp: −20 … +60 °C

Key Features

• High rated flow (80–100 L/min) for large‑scale hydraulic systems

• Robust linear force motor for high‑power actuation

• Closed‑loop LVDT feedback for accurate spool positioning

• Spring‑centered fail‑safe design (spool returns to neutral on power loss)

• Integrated EMC‑compliant electronics for reliable industrial use

Applications