DFG-W Water-Cooled Direct-Drive Screw Air Compressor (55–450 kW)

Screw Air Compressor

Drive

Direct coupled through a flexible coupling. No gears, no belts.

Cooling

Water cooled. Requires a cooling water supply; we size the exchanger against your inlet water temperature.

Airend

Assembled and tested in our own plant. Rotors come from a qualified airend supplier; we do not claim in-house rotor development.

Bearings

SKF or NSK, depending on model and batch.

Electrical components

Schneider contactors and protective devices.

Control system

Siemens S7-200 SMART. Pressure band, loading hours and fault history readable on site.

Motor

Wolong or Wannan standard. Siemens or ABB, and IE4 / IE5 high-efficiency, available as options.

Testing before dispatch

Performance bench plus acoustic room. Records ship with the unit.

Product Advantages:

Water cooled: the cooler rejects heat to your water loop, so the compressor room stays quiet and cool.
Direct coupled through a flexible coupling: no belts to re-tension.
Assembled and tested in our own plant; rotors from a qualified airend supplier.
Bearings SKF or NSK, electrical components Schneider, control Siemens S7-200 SMART.
Performance run on our test bench and noise checked in our acoustic room before dispatch.
Test records travel with the shipment, so the numbers on this page can be checked against your unit.

Free Consultation:

If you are interested in our products, please contact us via email: info@example.com or send your inquiry in the form below, we will reply you within 24 hours.

DFG-W model range — 55 to 450 kW

Water cooled for rooms where air cooling cannot dump the heat. Same four pressure tiers as the air-cooled DFG.

Model	m³/min 0.7 MPa	m³/min 0.8 MPa	m³/min 1.0 MPa	m³/min 1.3 MPa	Motor kW	Weight kg	L×W×H mm	Outlet	Noise dB(A)
DFG-75W	10.8	10.1	8.50	7.69	55	1520	1700×1030×1490	DN50	65±2
DFG-120W	16.3	15.3	14.4	13.1	90	1680	2180×1260×1750	2"	68±2
DFG-150W	21.7	20.2	17.6	16.2	110	2110	1970×1330×1770	DN65	68±2
DFG-175W	25.3	24.1	21.2	18.4	132	3550	2625×1736×1905	DN65	72±3
DFG-200W	28.8	27.7	25.5	22.5	160	4050	2753×1768×1985	DN80	72±3
DFG-250W	32.6	30.9	28.3	25.2	185	4250	2753×1768×1985	DN80	72±3
DFG-300W	36.8	34.8	30.9	29.0	220	4600	3034×1944×2045	DN100	76±3
DFG-350W	42.8	40.9	38.2	34.9	250	5100	3034×1944×2045	DN100	76±3
DFG-380W	50.2	50.0	42.1	40.5	280	7800	3200×2180×2200	DN100	84±2
DFG-450W	57.1	56.1	50.0	42.0	315	8400	3200×2180×2200	DN100	84±2
DFG-480W	67.8	66.7	56.2	46.8	355	8800	3500×2200×2350	DN100	84±2
DFG-600W	83.1	81.2	71.5	62.2	450	9200	3500×2200×2350	DN100	84±2

Capacities to ISO 1217 Annex C. 380 V 3 phase 50 Hz. DFG-200W is rated at 1.2 MPa in the catalogue while the rest of the range is 1.3 MPa; the table reproduces the catalogue value. Cooling water inlet temperature and flow to be confirmed per site.

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DFG-W Water-Cooled Direct-Drive Screw Air Compressor (55–450 kW)