MOOG Hydraulic Valve D633-178B
Product Details of MOOG Hydraulic Valve D633-178B
| Parameter | Value / Range |
|---|---|
| Valve type / design | Single-stage, spool & bushing design |
| Actuation | Directly driven by permanent-magnet linear force motor — no pilot supply needed |
| Mounting pattern | ISO 4401 – Size 03 (NG6) |
| Rated flow (at Δp = 35 bar per land) | 5 / 10 / 20 / 40 L/min (1.3 / 2.6 / 5.3 / 10.6 gpm) depending on spool version. |
| Maximum valve flow | 75 L/min (19.8 gpm) |
| Maximum operating pressure (P, A, B ports) | 350 bar (5,000 psi) |
| Port T (return) pressure | Without leakage-port (Y): 50 bar (725 psi); With Y port: 350 bar (5,000 psi) |
| Response time (0 → 100% stroke) | ≤ 12 ms (typical) |
| Electrical supply | 24 V DC (range 18 – 32 V DC) |
| Control signal options | ±10 V, ±10 mA, or 4–20 mA analog interface |
| Leakage flow (zero-lap spool, typical) | ~0.15 – 1.2 L/min depending on orifice (measured at 140 bar, oil viscosity 32 cSt, 40 °C) |
| Recommended hydraulic fluid | Hydraulic oil per DIN 52524 parts 1–3 or ISO 11158; viscosity 15–100 mm²/s (nominal) |
| Operating ambient temperature | –20 to +60 °C |
| Storage temperature | –40 to +80 °C |
| Mass | ~2.5 kg (5.5 lb) for standard size 03 version |