DT 4.2Pumping speed 1.9 m³/h
DT 4.25 K 3Ph 400 V 50 Hz / 230/460, 208, 400 V 60 Hz, UL/CSA
The Becker DT 4.25 K is a dry-running rotary vane compressor with a blast air volume of 25 m³/h at 50 Hz (30 m³/h at 60 Hz) and up to +1.0 bar pressure. It works oil-free and delivers oil-free compressed air. Ehrler & Beck advises on selection, accessories and service.
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- Pumping speed 25 m³/h 50 Hz 30 m³/h 60 Hz
- Rated motor power 1.1 kW 50 Hz 1.3 kW 60 Hz
| Motor variant | Motor order number |
|---|---|
| 3Ph 400 V 50 Hz / 230/460, 208, 400 V 60 Hz, UL/CSA (selected) | 41984407275114IL |
| 3Ph 190–255/330–440 V 50 Hz / 190–290/330–500 V 60 Hz | 41814498275 |
| 1Ph 230 V 50 Hz | 41824427275 |
| 1Ph 220–240 V 60 Hz, UL/CSA | 41924418275114 |
Becker DT 4.25 K – oil-free rotary vane compressor
The DT 4.25 K delivers 25 m³/h at 50 Hz (30 m³/h at 60 Hz) and works up to +1.0 bar pressure. The installed motor power is 1.1 kW at 50 Hz and 1.3 kW at 60 Hz, the sound pressure level 65 / 67 dB(A). Weight: approx. 36.5–39 kg with motor. Dimensions: 539 × 321–328 × 299 mm, pressure connection G 3/4".Dry-running rotary vane principle
The compressor works without oil in the compression chamber; there are no oil changes, and the compressed air produced is oil-free. An integrated inlet filter and a pressure regulating valve are part of the equipment; the motor drives the rotor directly. The K version is equipped with a compressed air cooler.Versions and accessories
- DT 4.25/0-80: version without compressed air cooler, max. +0.6 bar, lower motor power and smaller dimensions
- External inlet filter: accessory, on request
- Acoustic hood SH 19: accessory, on request
Advice and service
Ehrler & Beck supports you in selecting the right size and pressure stage, supplies accessories and spare parts and carries out maintenance and repair.| Pumping speed 50Hz | 25 |
|---|---|
| Pumping speed 60Hz | 30 |
| Rated motor power 50Hz | 1.1 |
| Rated motor power 60Hz | 1.3 |
| Motor efficiency class | IE3 |
| Weight | 39 |
| Length | 53.9 |
| Width | 32.8 |
| Height | 29.9 |
| Outlet connection flange | G 3/4" |
| Noise level | 65 dB(A) |
| Cooling method | Air cooling |
| Oil type | Oil-free |
Further technical data
| Motor | Data |
|---|---|
| Motor order number | 41984407275114IL |
| Pump types according to Becker | DT/DX 4.25 K T/X 4.25 DSK |
| Phases | 3~ (three-phase) |
| 50 Hz | 1.1 kW (1.5 hp) · Y400 V · IE3 · 1440 min⁻¹ · 2.6 A |
| 60 Hz | 1.3 kW (1.7 hp) · YY230/Y460 V · IE3 · 1735 min⁻¹ · 5.0/2.5 A 1.3 kW (1.7 hp) · YY208 V · IE3 · 1730 min⁻¹ · 5.4 A 1.3 kW (1.7 hp) · Y400 V · 1725 min⁻¹ · 2.7 A |
| Version | CE • UL • CSA • CC IP55 • ISO F • PTO |
| Motor data according to | Becker Motor Specifications for Pumps and Blowers (09/2026), item 2-13 |
Additional technical data
| Technical data | Value |
|---|---|
| Design | Rotary vane compressor, dry-running (oil-free), air-cooled |
| Blast air volume 50 Hz / 60 Hz | 25 / 30 m³/h |
| Pressure stage +1.0 bar: motor power 50 / 60 Hz | 1.1 / 1.3 kW |
| Pressure stage +1.0 bar: sound pressure level 50 / 60 Hz | 65 / 67 dB(A) |
| Weight | approx. 36.5–39 kg with motor |
| Dimensions | 539 × 321–328 × 299 mm |
| Pressure connection | G 3/4" |
| Reference data | 1000 mbar, 20 °C |
| Becker data sheet | Dated 2026-02-20 |
| Version / accessory | Description |
|---|---|
| DT 4.25/0-80 | Version without compressed-air cooler, max. +0.6 bar, lower motor power and smaller dimensions |
| External inlet filter | Accessory, on request |
| Sound enclosure SH 19 | Accessory, on request |
