Marine screw & piston compressors
GRF-10C to GRF-350C screw packages (7.5–250 kW) and ZFC / VFC / WFC piston compressors for 3.0 MPa starting air — designed, built and surveyed to classification-society rules.
Water-Cooled Packages
Seawater/fresh-water cooled units for continuous marine duty; three-stage oil separation keeps carry-over below 3 ppm.
Air-Cooled Screw · Enclosed
The blue enclosed canopy packages are air-cooled: sound-attenuated, controller-integrated, delivered as box or complete skid with class-certified pressure parts.
Marine Piston Compressors
Open-frame air-cooled piston sets ZFC / VFC / WFC for 3.0 MPa engine starting air — high pressure, intermittent duty, the highest reliability requirement on board.
Marine-grade build
- Corrosion-protected components
- Low vibration & noise
- Auto control & protection
Clean air for N₂ plants
- Three-stage oil separation
- < 3 ppm oil carry-over
- Stable feed pressure
Class certification
- CCS / BV / RS / ABS approvals held
- 10+ society rules covered
- CE & ECM approved
Starting air
- WFC-90 starting sets
- With air receivers
- Up to 30 bar duty
GRF series — air-cooled & water-cooled
Capacities at 12.5 / 10 / 8 bar. Switch units between m³/min and CFM, or search a model.
Marine screw compressor data
| Model | Motor (kW) | 12.5 bar (m³/min) | 10 bar (m³/min) | 8 bar (m³/min) | Weight (kg) | Outlet | L×W×H (mm) |
|---|---|---|---|---|---|---|---|
| Belt driven · air cooled · 7.5–45 kW | |||||||
| GRF-10C | 7.5 | 0.7 | 0.8 | 1.1 | 320 | 3/4" | 1100×800×1000 |
| GRF-15C | 11 | 1.0 | 1.2 | 1.6 | 320 | 3/4" | 1100×800×1000 |
| GRF-20C | 15 | 1.5 | 1.8 | 2.4 | 350 | 3/4" | 1100×800×1000 |
| GRF-25C | 18.5 | 1.7 | 2.0 | 2.8 | 550 | 1" | 1280×1000×1150 |
| GRF-30C | 22 | 2.6 | 3.1 | 3.4 | 600 | 1" | 1280×1000×1150 |
| GRF-40C | 30 | 3.2 | 3.8 | 5.0 | 750 | 1" | 1280×1000×1150 |
| GRF-50C | 37 | 4.8 | 5.6 | 6.4 | 850 | 1 1/4" | 1500×1100×1350 |
| GRF-60C | 45 | 5.3 | 6.2 | 7.6 | 900 | 1 1/4" | 1500×1100×1350 |
| Direct driven · air cooled · 55–110 kW | |||||||
| GRF-75C | 55 | 7.2 | 8.5 | 9.5 | 1700 | DN50 | 1750×1250×1520 |
| GRF-100C | 75 | 8.5 | 10.0 | 12.4 | 1900 | DN50 | 1750×1250×1520 |
| GRF-120C | 90 | 11.1 | 13.0 | 15.0 | 2250 | DN65 | 2250×1330×1650 |
| GRF-150C | 110 | 13.2 | 15.5 | 19.3 | 2350 | DN65 | 2250×1330×1650 |
| Model | Motor (kW) | 12.5 bar (m³/min) | 10 bar (m³/min) | 8 bar (m³/min) | Weight (kg) | Outlet | L×W×H (mm) |
|---|---|---|---|---|---|---|---|
| Belt driven · water cooled · 22–45 kW | |||||||
| GRF-30C | 22 | 2.5 | 3.1 | 3.4 | 850 | DN40 | 1700×1100×1350 |
| GRF-40C | 30 | 3.3 | 3.8 | 5.0 | 900 | DN40 | 1700×1100×1350 |
| GRF-50C | 37 | 4.5 | 5.6 | 6.4 | 950 | DN40 | 1700×1100×1350 |
| GRF-60C | 45 | 5.2 | 6.2 | 7.6 | 980 | DN40 | 1700×1100×1350 |
| Direct driven · water cooled · 55–250 kW | |||||||
| GRF-75C | 55 | 6.5 | 8.5 | 9.3 | 1250 | DN50 | 2200×1400×1410 |
| GRF-100C | 75 | 8.9 | 9.5 | 12.4 | 1350 | DN50 | 2200×1400×1410 |
| GRF-120C | 90 | 10.8 | 13.0 | 15.0 | 1850 | DN65 | 2200×1400×1410 |
| GRF-150C | 110 | 14.0 | 15.0 | 19.3 | 2150 | DN65 | 2200×1400×1410 |
| GRF-175C | 132 | 17.5 | 19.5 | 22.5 | 2800 | DN80 | 2500×1550×1690 |
| GRF-220C | 160 | 21.2 | 24.5 | 26.7 | 3000 | DN80 | 2500×1550×1690 |
| GRF-250C | 185 | 21.2 | 26.7 | 30.0 | 3200 | DN80 | 2500×1550×1690 |
| GRF-270C | 200 | 26.7 | 29.0 | 32.5 | 3500 | DN100 | 2800×2000×1831 |
| GRF-300C | 220 | 28.8 | 32.2 | 37.5 | 3800 | DN100 | 2800×2000×1831 |
| GRF-350C | 250 | 31.6 | 37.5 | 40.0 | 4000 | DN100 | 2800×2000×1831 |
- Capacities measured at standard conditions (suction 20 °C, 0.1 MPa abs., 0 % RH), tolerance ±5 %.
- Air-cooled units are limited to 110 kW (GRF-150C); 132 kW and above are water-cooled only.
- Standard discharge pressures are 12.5 / 10 / 8 bar; up to 15 bar on request, agreed in the order technical agreement.
- Air-cooled units recommended for ambient ≤ 45 °C with good ventilation. Weights and dimensions refer to the skid-mounted unit, excluding dryers and receivers; actual delivery prevails.
- Parameters are for reference; the company reserves the right to change them without notice.
Marine piston compressors — ZFC / VFC / WFC
A screw machine excels at continuous, medium-pressure, high-flow duty; a piston machine at high pressure, intermittent, low flow — exactly what engine starting air demands above 30 bar, with the highest reliability requirement on board. Three air-cooled series, seven ratings.
Piston compressor data · 3.0 MPa starting air · air cooled
| Model | Flow capacity | Pressure (MPa) | Motor (kW) | Cooling | Speed (r/min) | Weight (kg) | L×W×H (mm) |
|---|---|---|---|---|---|---|---|
| ZFC series · single-cylinder arrangement | |||||||
| ZFC-33# | 14.5 m³/h | 3.0 | 4 | Air cooled | 1500 | 243 | 1215×520×637 |
| ZFC-33# | 22.0 m³/h | 3.0 | 5.5 | Air cooled | 1500 | 265 | 1215×520×637 |
| VFC series · two-cylinder arrangement | |||||||
| VFC-43# | 30.0 m³/h | 3.0 | 7.5 | Air cooled | 1500 | 325 | 1215×520×637 |
| VFC-43# | 44.0 m³/h | 3.0 | 11 | Air cooled | 1500 | 450 | 1500×800×1100 |
| WFC series · three-cylinder arrangement | |||||||
| WFC-90 | 1.0 m³/min (60 m³/h) | 3.0 | 15 | Air cooled | 1460 | 450 | 1500×800×1100 |
| WFC-90 | 1.6 m³/min (96 m³/h) | 3.0 | 18.5 | Air cooled | 1460 | 600 | 1600×900×1100 |
| WFC-90 | 2.0 m³/min (120 m³/h) | 3.0 | 22 | Air cooled | 1460 | 650 | 1600×900×1100 |
- ZFC / VFC capacities are stated in m³/h; WFC-90 follows the manufacturer's piston table in m³/min with the m³/h equivalent in brackets. The screw range uses m³/min — bases differ and are not directly comparable.
- Z / V / W denote one- / two- / three-cylinder arrangements; motor power and capacity combinations are selected against bottle charging time.
- Dedicated solutions exist for blackout recovery, water-mist firefighting and breathing-air (SCBA / EEBD) charging.
- Parameters are for reference only; the company reserves the right to change them without notice.
Selected marine references
Wison F462, 45,000 m³ FSRU
GRF-300DSCW two-stage + GRF-300C, GRF-120C and WFC-90 on one vessel.
PETRONAS Sepat FPSO
220 kW utility/instrument air skids, 690 V, 30-year design life.
MSC fleet retrofits
30 sets on 20+ container vessels with EN/CN documentation.