Hangzhou Qiwei Instrument Co., Ltd. is one of the leading manufacturers and suppliers of laboratory oil-free vacuum pump in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to wholesale bulk laboratory oil-free vacuum pump in stock here from our factory. We also accept customized orders.
A laboratory vacuum pump with oil-free is a practical vacuum source for regular laboratory tasks that call for vacuum filtration, suction, or vacuum assistance. An oil-free design does not depend on the gas-handling path's circulating pump oil, unlike an oil-lubricated vacuum pump. This lessens the need for frequent vacuum oil changes and reduces the possibility of oil-related contaminants.
Five versions, including XZ-1+, XZ-2+, XZ-3+, XZ-4+, and XZ-6+, are included in the QIWEILAB Laboratory Oil-Free Vacuum Pump line. The series offers various capacity choices for laboratory users with flow rates listed between 10 and 60 L/min. For suitable laboratory applications, the pump can provide positive pressure or both positive and negative pressure, depending on the model and the pump's pressure configuration.
Its light weight, simple procedure, and compact design make it suitable for laboratories, academic institutions, research facilities, and quality control departments looking for a realistic vacuum solution.
product key technologies

The oil-free vacuum pump has adjustable pressure, featuring a simple structure, convenient operation, high vacuum degree, long service life, and good durability. It is also a dual-purpose vacuum pump for vacuuming and compression. It has a wide range of applications; when combined with corresponding equipment, it can be used in oxygenators, nitrogen blowers, solid phase extraction instruments, thin-layer colorimetric spraying, solvent filters, atmospheric samplers, and to meet various other vacuum requirements. According to the needs of different operators, different materials and different filter pore diameters of filter membranes can be selected. This achieves the effect of removing impurities in solvents, purifying, and disinfection.
Advantage
A pumping system that doesn't use lubricating oil in the air-handling path produces suction through an oil-free vacuum pump. The pressure inside the system drops as air is drawn from the linked gear, creating the vacuum needed for purification or other lab procedures.
Users may avoid program oil changes and save money on maintenance costs related to oil replacement, oil disposal, and oil leakage because the pumping process doesn't require vacuum oil. The attached laboratory setup is also protected from oil vapor thanks to its oil-free design.
Users should check the supporting tubes and fittings for leakage, follow the manufacturer's inspection instructions, and maintain air inlet and ventilation clear for daily operation. Oil-related repair is lessened when oil-free operation is in place, but this does not imply that the pump is uninsightly or careless.
Technical Parameter
| Model | XZ-1+ | XZ-2+ | XZ-3+ | XZ-4+ | XZ-6+ |
| Vacuum Pressure | ≤80 Kpa | ||||
| Positive / Negative Pressure | Negative Pressure | Positive / Negative Pressure | |||
| Flow Rate | 10 L/min | 35 L/min | 40 L/min | 60 L/min | |
| Power | 80W | 85W | 140W | 300W | |
| Power Supply | AC220V/50HZ | ||||
| Size | 250×145×235mm | 260×145×235mm | 300×250×280mm | 400×250×320mm | |
| Weight | 3.2 kg | 3.5 kg | 10.5 kg | 12.5 kg | 18.5 kg |
Application
Vacuum Filtration
Appropriate solvent filtration assemblies, filtration holders, and filtration flasks can be filtered out of the pump's vacuum source. It facilitates program test preparation, solution clarification, and laboratory filtration workflows by creating bad pressure, which aids in the passage of liquid through a filter membrane.
Rotary Evaporation and Solvent Evaporation
A vacuum source can support liquid evaporation in rotational evaporator systems and different evaporation setups by lowering the operating pressure. Users should check the injector required vacuum level with its actual performance to make sure it is appropriate for the liquid vapor and operating conditions before connecting the pump.
Other Laboratory Equipment
The collection may also be considered for suitable solid-phase extraction tools and other laboratory tools that require vacuum assistance, depending on the required pressure and flow rate. Before purchasing, users may check the relationship size, pressure, and chemical compatibility.
FAQ
1. What is the main advantage of an oil-free vacuum pump?
In the gas-handling way, it runs without vacuum oil, thereby reducing the risk of oil-related contamination and replacing it frequently with vacuum oil.
2. Can this pump be used for vacuum filtration?
Appropriate filter holders, filter assemblies, and filtration flasks can be used as a vacuum source. The chosen model may meet the desired vacuum level and flow rate.
3. Can it be connected to a rotary evaporator?
When the equipment's requirements for both its suction performance and chemical compatibility are met, rotational evaporator systems may be considered. Before selecting, please verify the required working vacuum.
4. How do I choose between the XZ-1+ and XZ-6+ models?
Examine the installation space, vacuum level, pressure function, and flow rate requirements. The flow rates for the XZ-1+ and XZ-2+ are listed at 10 L/min, with the XZ-6+ reaching 60 L/min.
5. Does an oil-free vacuum pump require maintenance?
Users may also check the inlet, tubing, fittings, and ventilation area in accordance with the working instructions, though it doesn't need regular vacuum oil changes.
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