![Bitzer Screw Compressor OSK[A] Ex - OSK7471ex-K](images/osk-a-ex-series.png)
Screw Compressor OSK[A] Ex - OSK7471ex-K
OS screws in our special explosion-proof design set the bar worldwide for technical innovation, diversity and efficiency
- High system output
- Optimal capacity adjustment and minimal energy requirements under full- and part-load
- Combination of various compressor sizes
- Large bearings
- Coupling and coupling housing for direct drive with IEC motors
- Special NH₃ variant with adapted internal Vi for optimal efficiency
| Type | Displacement | Allowed speed range | Sens of rotation (compressor) | Weight | Max. pressure (LP/HP) | Connection suction line | Connection suction line (NH3) | Connection discharge line | Connection discharge line (NH3) | Oil type R22 | Oil type R134a/R404A/R507A/R407A/R407F | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2900 RPM 50Hz | 3500 RPM 60Hz | |||||||||||
| SI | 250 m³/h | 302 m³/h | 1450 .. 4000 min-1 | links / counter-clockwise | 188 kg | 19 / 28 bar | 76 mm - 3 1/8'' | DN 80 | 54 mm - 2 1/8'' | DN 50 | B150SH, B100 (Option) | BSE170 (Option) |
| IP | 8820 CFH | 10680 CFH | 1450 .. 4000 min-1 | links / counter-clockwise | 388 lb | 275 / 400 psi | 76 mm - 3 1/8'' | DN 80 | 54 mm - 2 1/8'' | DN 50 | B150SH, B100 (Option) | BSE170 (Option) |
Extent of delivery (Standard)
| Type | Oil flow control | Built in oil filter | Protective charge | Suction shut-off valve | Pressure relief valve | Check valve | Oil injection kit | Discharge gas temperature sensor | Start unloading | Capacity control | Sight glass |
|---|---|---|---|---|---|---|---|---|---|---|---|
| SI | Standard | Standard | Standard | Standard | Standard | Standard | Standard | Standard | Standard | 100-75-50% (Standard) | Standard |
| IP | Standard | Standard | Standard | Standard | Standard | Standard | Standard | Standard | Standard | 100-75-50% (Standard) | Standard |
Available Options
| Type | Coupling housing | Discharge shut-off valve | ECO connection with shut-off valve | Adapter/shut-off valve for ECO |
|---|---|---|---|---|
| SI | Option | Option | Option | 22 mm - 7/8'' (Option) |
| IP | Option | Option | Option | 22 mm - 7/8'' (Option) |