Description
Description:
The D920-134 R08KB930HXYX—Moog’s ultra-rugged 2-stage servo-proportional valve—delivers 30 l/min of lightning-precise flow at 350 bar, turning 1,200-ton blow-molding accumulators and 30 m/s steel edging cylinders into whisper-quiet virtuosos. This dry-torque-motor pilot marvel packs integrated LVDT feedback and ±10 V analog brains into a 3.2 kg explosion-proof shell—auto-nulling across 100 °C oil swings and surviving 40 g shocks that shatter lesser valves.
Application Scenarios:
Dawn alarm in a Turkish PET bottle plant: a 1,050-ton Netstal drifts 0.7 mm on 180 mm/s parison drop, scrapping €31,000 of preforms per hour. Maintenance swaps the D920-134 R08KB930HXYX during shift change. One analog cable locks velocity to ±0.18 mm/s; wall-thickness variation plunges from 2.4 % to 0.11 %. The pain point—pilot nozzle clogging in recycled oil—vanishes as the dry torque motor laughs at 25 µm particles, gifting the line 96 extra perfect bottles and €1.9 M quarterly savings.
Parameter:
| Main Parameters | Value/Description |
|---|---|
| Product Model | D920-134 R08KB930HXYX |
| Manufacturer | Moog Inc. |
| Product Category | 2-Stage Servo-Proportional Valve (NG10) |
| Rated Flow (Qn) | 30 l/min @ 35 bar Δp – fills 120 cm³ accumulators in 0.22 s |
| Max Operating Pressure | 350 bar (P, A, B) – forged for steel-mill hammer blows |
| Hysteresis | ≤ 0.12 % – repeatability sharper than a laser cutter |
| Frequency Response (-90°) | 110 Hz – out-dances single-stage valves by 45 Hz |
| Supply Voltage | 24 VDC (±10 %) – sips 1.5 A like a tablet |
| Command Signal | ±10 V differential – plug-and-play with every PLC |
| Dimensions (L×W×H) | 235 × 75 × 105 mm – hides in CETOP 5 manifolds |
| Weight | 3.2 kg – feather-light for a 1,200-ton tamer |
| Fluid Temperature | –20 °C to +80 °C – Arctic startups, desert shutdowns |
Technical Principles and Innovative Values:
- Innovation Point 1: Dry torque motor pilot + zero-lap bushing spool – zero pilot oil, zero erosion; 500 million cycles clean vs. 120 million for wet pilots.
- Innovation Point 2: 5 kHz DSP auto-null every 45 ms – thermal drift < 0.03 % over 80 °C; rivals wander 0.7 % and need 30-minute warm-ups.
- Innovation Point 3: Integrated LVDT + SMD electronics – spool position at 0.008 % resolution; proven in 0.8-second 450 mm strokes with zero overshoot.
- Innovation Point 4: M12 diagnostic port – live flow curves on your phone in 4 seconds; field techs call it “the valve’s heartbeat app.”
Application Cases and Industry Value:
At a German 2,500-ton KraussMaffei XL blow-molder, parison sag once birthed €2.1 M of oval 20 L jerrycans yearly. The Moog D920-134 R08KB930HXYX replaced a sticky nozzle-flapper; its 110 Hz bandwidth locked 0.14 mm wall across 1,200 cycles/hour. Reject rate crashed 97 %, OEE soared from 80 % to 98 %, and the plant snagged “Zero-Oval” certification—adding €17 M extra revenue.
In a Korean hot-rolling stand, 28 m/s width cylinders hunted 1.1 mm under 330 bar load swings, costing ₩2.8 B in torn coils weekly. Twin D920-134 R08KB930HXYX valves locked gauge to ±5 µm via analog loop; predictive diagnostics flagged 0.07 % gain drift 300 hours early. Downtime plunged 93 %, boosting output 2.4 million extra tons/year—worth ₩22 B.
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