VT 4.2Pumping speed 1.9 m³/hUltimate pressure 400 mbar
VT 4.25 3Ph 190–255/330–440 V 50 Hz / 190–290/330–500 V 60 Hz, IP55
The Becker VT 4.25 is a dry-running rotary vane vacuum pump with a pumping speed of 25 m³/h at 50 Hz (30 m³/h at 60 Hz) and a vacuum down to 150 mbar absolute. It works oil-free, is air-cooled and comes with inlet filter and vacuum regulating valve already fitted. Ehrler & Beck advises on selection, accessories and service.
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- Pumping speed 25 m³/h 50 Hz 30 m³/h 60 Hz
- Ultimate pressure 150 mbar
- Rated motor power 0.75 kW 50 Hz 0.9 kW 60 Hz
| Motor variant | Motor order number |
|---|---|
| 3Ph 400 V 50 Hz / 230/460, 208, 400 V 60 Hz, UL/CSA | 41784407275114IL |
| 3Ph 200/350 V 50 Hz / 220/380–400, 200/350 V 60 Hz, UL/CSA | 41684453275114IL |
| 3Ph 190–255/330–440 V 50 Hz / 190–290/330–500 V 60 Hz, IP55 (selected) | 41614498275003CY |
| 3Ph 190–255/330–440 V 50 Hz / 190–290/330–500 V 60 Hz, IP54 | 41614498275 |
| 1Ph 230 V 50/60 Hz | 41624427275 |
Becker VT 4.25 – oil-free rotary vane vacuum pump for rough vacuum
The VT 4.25 delivers 25 m³/h at 50 Hz and 30 m³/h at 60 Hz and reaches a vacuum of 150 mbar absolute. The installed motor power is 0.75–0.8 kW at 50 Hz and 0.9–1.0 kW at 60 Hz (depending on the motor). The sound pressure level is 62 dB(A) (50 Hz) or 67 dB(A) (60 Hz), the weight with motor approx. 26–29 kg, depending on the motor. Dimensions 494 × 260–270 × 299 mm (L × W × H), suction connection G 3/4".Dry-running rotary vane principle
The pump is designed for continuous operation in the rough vacuum range. Its self-lubricating vanes run without oil – there is no oil change, and the conveyed air stays free of oil. This makes the VT 4.25 a solution for applications that require a clean environment. The operating point can be set with the integrated vacuum regulating valve.Design and equipment
The motor drives the rotor directly via the motor shaft – this keeps the pump compact and makes installation easier. The robust design is intended for long running times even under demanding conditions, and maintenance can be carried out on site.- Large integrated inlet filter
- Combined vacuum regulating and safety valve
- Noise-optimised blow-off valve
- Base with vibration dampers
Versions and accessories
- VX 4.25: X series: same size with low-wear special vanes, 100 mbar absolute
- External inlet filter: accessory, on request
- Acoustic hood SH 19: accessory, on request
- Further combinations: on request
Advice and service
Ehrler & Beck supports you in selecting the right size, supplies accessories and spare parts and carries out maintenance and repair.| Pumping speed 50Hz | 25 |
|---|---|
| Pumping speed 60Hz | 30 |
| Ultimate pressure | 150 |
| Rated motor power 50Hz | 0.75 |
| Rated motor power 60Hz | 0.9 |
| Weight | 29 |
| Length | 49.4 |
| Width | 27 |
| Height | 29.9 |
| Inlet connection flange | G 3/4" |
| Noise level | 62 dB(A) |
| Cooling method | Air cooling |
| Oil type | Oil-free |
Further technical data
| Motor | Data |
|---|---|
| Motor order number | 41614498275003CY |
| Pump types according to Becker | VT/VX 4.25 | DT/DX 4.25/0-80 | T/X 4.25 DV |
| Phases | 3~ (three-phase) |
| 50 Hz | 0.75 kW (1.0 hp) · Δ190–255/Y330–440 V · 1445 min⁻¹ · 3.8–5.5/2.2–3.2 A |
| 60 Hz | 0.90 kW (1.2 hp) · Δ190–290/Y330–500 V · 1735 min⁻¹ · 4.3–4.7/2.9–2.7 A |
| Version | CE IP55 • ISO F • PTO |
| Motor data according to | Becker Motor Specifications for Pumps and Blowers (09/2026), item 2-10 |
Additional technical data
| Technical data | Value |
|---|---|
| Design | Rotary vane vacuum pump, dry-running (oil-free), air-cooled |
| Pumping speed 50 Hz / 60 Hz | 25 / 30 m³/h |
| Vacuum (absolute) | 150 mbar |
| Installed motor power 50 Hz / 60 Hz | 0.75–0.8 / 0.9–1.0 kW |
| Sound pressure level 50 Hz / 60 Hz | 62 / 67 dB(A) (DIN EN ISO 3744, 1 m) |
| Weight with motor | approx. 26–29 kg (depending on the motor) |
| Dimensions L × W × H | 494 × 260–270 × 299 mm (with eye bolt; housing 253 mm) |
| Suction connection | G 3/4" |
| Reference data | 1000 mbar, 20 °C, tolerance ±5 % |
| Version / accessory | Description |
|---|---|
| VX 4.25 | X series: same size with low-wear special vanes, 100 mbar absolute |
| External inlet filter | Accessory, on request |
| Sound enclosure SH 19 | Accessory, on request |
| Further combinations | on request |
VT 4.2Pumping speed 1.9 m³/hUltimate pressure 400 mbar
VT 4.4Pumping speed 4.1 m³/hUltimate pressure 150 mbar
VT 4.8Pumping speed 8 m³/hUltimate pressure 150 mbar
VT 4.10Pumping speed 10 m³/hUltimate pressure 150 mbar
VT 4.16Pumping speed 16 m³/hUltimate pressure 150 mbar
VT 4.40Pumping speed 40 m³/hUltimate pressure 150 mbar