The W series pumps are single-stage oil lubricated rotary vane vacuum pumps.
The flanged electric motor is coupled by means of an elastic coupling.
Cooling is ensured by a water / oil exchanger connected to a thermostatic valve that regulates the passage of water inside the circuit.
An integrated non-return valve prevents the oil from rising and the air from returning to the chamber to be emptied during the stop phase.
A system for separating the oil mist from the exhaust air is present in the tank; such filtered oil is then recovered by the pump automatically.
Gas ballasts prevent condensation inside the pump when small amounts of vapour are sucked.
The W Series pumps are suitable for the evacuation of closed systems or to operate at a constant vacuum included in the following range:
EU 300W, PVL 541W from 0.5 to 300 mbar (absolute)
EU 300BW, PVL 541BW from 10 to 850 mbar (absolute)
EU 650W from 0.5 to 850 mbar (absolute)
ACCESSORIES
The following useful accessories are available for installation and for controlling the pump operating parameters:
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External inlet filter
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Vacuum gauges / vacuum switches
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Manometers / pressure switches
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Thermostat
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Minimum oil level switch
| Parameter | EU 300W | PVL 54HW | EU 660W |
| Pumping Speed (m³/h) 50Hz | 300 | 533 | 660 |
| Pumping Speed (m³/h) 60Hz | 360 | 640 | 760 |
| Ultimate Pressure with Gas Ballast (abs.) (mbar) | ≤10 | ≤10 | ≤15 |
| Ultimate Pressure (abs.) (mbar) | ≤0.5 | ≤0.5 | ≤0.5 |
| Motor Power (kW) 50Hz | 7.5 | 15 | 18.5 |
| Motor Power (kW) 60Hz | 7.5 | 15 | 18.5 |
| Motor Speed (rpm) 50Hz | 1500 | 1500 | 1500 |
| Motor Speed (rpm) 60Hz | 1800 | 1800 | 1800 |
| Max. Water Vapour Tolerance (mbar) | 80 | 80 | 80 |
| Water Vapour Pumping Capacity (kg/h) | 21 | 37 | 37 |
| Lubricant Charge (l) | 7 | 12 | 12 |
| Sound Pressure Level (dB(A)) 50Hz | 68 | 72 | 72 |
| Sound Pressure Level (dB(A)) 60Hz | 70 | 74 | 74 |
| Dimensions (L × B × H) mm 50Hz | 1102×525×523 | 1245×700×543 | 1408×823×563 |
| Dimensions (L × B × H) mm 60Hz | 1102×525×523 | 1377×700×543 | 1484×823×563 |
| Weight (kg) 50Hz | 240 | 450 | 610 |
| Weight (kg) 60Hz | 240 | 450 | 610 |
| Connections | Inlet: 2" GasOutlet: 2" Gas | Inlet: 3" GasOutlet: 3" Gas | Inlet: 3" GasOutlet: 3" Gas |