This oil sealed rotary vacuum pump is also been called as Oil-lubricated rotary vacuum pump, which is a positive-displacement pump that consists of vanes mounted to a rotor rotating inside of a circular casing.
The Strong water vapor extraction ability makes the rotary vane pump the best solution for CZPT drying, such as the flower CZPT drying, milk CZPT drying, meat CZPT drying, fruit CZPT drying, coffee CZPT drying and food CZPT drying, etc.
The evacuation chamber is filled with a specifically formulated mineral oil which acts as a sealant and lubricant between the vanes and vacuum pump chamber housing. It is the typical one-stage Rotary Vane Vacuum Pump which could also be widely used in various applications.
Features & Highlights
Rugged casing, made of High Purity Aluminum
Compact design to save installation spaces
High efficiency, benefits from the direct drive mechanism and compact structure
Pure copper motor and big air fans to make it run in long time without interruption
Multi-rotating vanes and rubber pads are installed at the bottom, the operation is stable and the vibration is small
German technology support
Custom logo and color are accepted, CZPT even could provide laser caved logo or engraved logo on the pump body or shell
Available in stock for wholesale
|Exhaust rate-50Hz (m³/h)
|Exhaust rate-60Hz (m³/h)
|Limiting pressure (mbar)
|Motor power (kw)
|220-240 / 380-415
|220-240 / 380-415
|220-240 / 380-415
|380-415 / 660-720
|380-415 / 660-720
|380-415 / 660-720
|380-415 / 660-720
|Motor speed-50HZ (r/min)
|Motor speed-60HZ (r/min)
|Steam permissible pressure (mbar)
|Suction rate of steam (kg/h)
|Operating humidity (ºC)
|Operating Temperature (ºC)
|Ambient temperature (ºC)
|Oil capacity (L)
|Weight approx (kg)
|Type of protection (IP)
|Overall dimensions LxWxH(mm)
Markets & Applications
Thermoforming (blister, air pressure, foam) molding
Vacuum packaging equipment and food processing technology
Vacuum degassing, defoaming, impregnation, concentration, drying
Vacuum adsorption, fixtures, spreaders, suction cups
Vacuum lamination, shaping, filming
Vacuum crystallization, distillation, injection, cooling
Vacuum packaging and food processing machinery
Why choose us?
Germany technology supported
OEM service for different types of vacuum solutions
Sample is available
24 hours technical support
Tips for rotary vane vacuum pumps
The rotary vane vacuum pump should be placed horizontally. Generally speaking, there’s no need to fix pump to the floor since there’s no vibration while the pump is running. There are metric screw holes on the damping pads at the bottom of rotary vane vacuum pump to fix the pump. Do not push or pull the pump on the ground to avoid damaging the damping pads.
For more information about the vacuum pump installation, maintainance, the Common faults and troubleshooting, please check our FAQ page, or contact us directly. We would like to provide the tech support ASAP.
Q: Is CZPT a vacuum pump Manufacturer or a trading company?
A: CZPT is the authentic vacuum pump factory located in China; our aim is to produce the cost-effective vacuum pump with good quality.
Q: Can we have a visit to your factory?
A: Yes, welcome to our factory anytime
We also could have video meeting if you like.
Q: How many workers do you own?
A: CZPT owns more than 20 professional workers right now.
Q: Can I have my own color?
A: Yes, we could print any other colors as client’s requests; there will be extra cost for that.
Q: Can I have my own design/printing on vacuum pump?
A: Yes, we could print your own label on pump body; there will be extra cost and the MOQ.
Q: Can I have an engraved logo on the vacuum pump shell?
A: It’s not easy to have engraved logo on the pump body/shell, but we still could add your engraved logo on it if you like, there will be extra cost!
Q: Do you accept OEM service?
A: Yes, OEM requests are welcomed, we provide OEM service
Q: What’s the Sample policy?
A: We could provide sample with the bulk price, please note that the freight cost is more expensive for sample.
Q: What’s the Payment term?
A: 30% advanced; balance after goods been finished and before the shipment.
Q: How do you ensure the quality?
A: No need to worry about the quality, we will do Test run for more than 10 hours before packaging. Including the noise test, Stationarity Test,
Quality report and the CE certification also could be provided.
Q: How to become the agent and what could I benefit from that?
A: Welcome to be our agent or distributor!
Please send your contact information to us via E-mail, we will check and feedback ASAP.
Q: What’s the MOQ?
A: For general order, you could order 1 set to test the quality, and please consider the shipping cost for small volume.
For custom/OEM order, The MOQ should be at least 10 sets, and there will be extra cost for the logo, color and others.
Q: Do you attend in any shows or exhibition?
A: We are eager to show our cost-effective vacuum pump all over the world, you could join in our mailing list, and we will notice you once we get the invitation in your country or region.
Q: How can we get a vacuum pump Catalogue or Price list?
A: Please contact us via e-mail or some other ways, we will send you the catalogue to you, or you could download them from our official website.
Q: What are the usual Shipping ways?
A: To Asia, mainly by land transportation, to Vietnam, our shipping forwarder could provide the 1 stop service
Q: Where can I buy the spare parts or accessories?
A: CZPT could provide the original vacuum pump spare parts with cost price.
Q: Shall I pay for the income taxes if I order the vacuum pump from you?
A: Please check with the shipping forwarder in your country, since the import is not the same in different countries.
Welcome to join us!
Join CZPT and become our distributors or agent in your region, and share the discount prices!
|Oil or Not:
|Rotary Vacuum Pump
|Kinetic Vacuum Pump
Types of vacuum pumps
A vacuum pump is a device that draws gas molecules from a sealed volume and leaves a partial vacuum in its wake. Its job is to create a relative vacuum within a specific volume or volume. There are many types of vacuum pumps, including centrifugal, screw and diaphragm.
Forward centrifugal pump
Positive displacement centrifugal vacuum pumps are one of the most commonly used pump types in the oil and gas industry. Their efficiency is limited to a range of materials and can handle relatively high solids concentrations. However, using these pumps has some advantages over other types of pumps.
Positive displacement pumps have an enlarged cavity on the suction side and a reduced cavity on the discharge side. This makes them ideal for applications involving high viscosity fluids and high pressures. Their design makes it possible to precisely measure and control the amount of liquid pumped. Positive displacement pumps are also ideal for applications requiring precise metering.
Positive displacement pumps are superior to centrifugal pumps in several ways. They can handle higher viscosity materials than centrifuges. These pumps also operate at lower speeds than centrifugal pumps, which makes them more suitable for certain applications. Positive displacement pumps are also less prone to wear.
Positive displacement vacuum pumps operate by drawing fluid into a chamber and expanding it to a larger volume, then venting it to the atmosphere. This process happens several times per second. When maximum expansion is reached, the intake valve closes, the exhaust valve opens, and fluid is ejected. Positive displacement vacuum pumps are highly efficient and commonly used in many industries.
Self-priming centrifugal pump
Self-priming centrifugal pumps are designed with a water reservoir to help remove air from the pump. This water is then recirculated throughout the pump, allowing the pump to run without air. The water reservoir can be located above or in front of the impeller. The pump can then reserve water for the initial start.
The casing of the pump contains an increasingly larger channel forming a cavity retainer and semi-double volute. When water enters the pump through channel A, it flows back to the impeller through channels B-C. When the pump is started a second time, the water in the pump body will be recirculated back through the impeller. This recycling process happens automatically.
These pumps are available in a variety of models and materials. They feature special stainless steel castings that are corrosion and wear-resistant. They can be used in high-pressure applications and their design eliminates the need for inlet check valves and intermediate valves. They can also be equipped with long intake pipes, which do not require activation.
Self-priming centrifugal pumps are designed to run on their own, but there are some limitations. They cannot operate without a liquid source. A foot valve or external liquid source can help you start the self-priming pump.
The mechanical and thermal characteristics of a screw vacuum pump are critical to its operation. They feature a small gap between the rotor and stator to minimize backflow and thermal growth. Temperature is a key factor in their performance, so they have an internal cooling system that uses water that circulates through the pump’s stator channels. The pump is equipped with a thermostatically controlled valve to regulate the water flow. Also includes a thermostatic switch for thermal control.
Screw vacuum pumps work by trapping gas in the space between the rotor and the housing. The gas is then moved to the exhaust port, where it is expelled at atmospheric pressure. The tapered discharge end of the screw further reduces the volume of gas trapped in the chamber. These two factors allow the pump to work efficiently and safely.
Screw vacuum pumps are designed for a variety of applications. In some applications, the pump needs to operate at very low pressures, such as when pumping large volumes of air. For this application, the SCREWLINE SP pump is ideal. Their low discharge temperature and direct pumping path ensure industrial process uptime. These pumps also feature non-contact shaft seals to reduce mechanical wear. Additionally, they feature a special cantilever bearing arrangement to eliminate potential sources of bearing failure and lubrication contamination.
Screw vacuum pumps use an air-cooled screw to generate a vacuum. They are compact, and clean, and have a remote monitoring system with built-in intelligence. By using the app, users can monitor pump performance remotely.
Diaphragm vacuum pumps are one of the most common types of vacuum pumps found in laboratories and manufacturing facilities. The diaphragm is an elastomeric membrane held in place around the outer diameter. While it is not possible to seal a diaphragm vacuum pump, there are ways to alleviate the problems associated with this design.
Diaphragm vacuum pumps are versatile and can be used in a variety of clean vacuum applications. These pumps are commercially available with a built-in valve system, but they can also be modified to include one. Because diaphragm pumps are so versatile, it’s important to choose the right type for the job. Understanding how pumps work will help you match the right pump to the right application.
Diaphragm vacuum pumps offer a wide range of advantages, including an extremely long service life. Most diaphragm pumps can last up to ten thousand hours. However, they may be inefficient for processes that require deep vacuum, in which case alternative technologies may be required. Additionally, due to the physics of diaphragm pumps, the size of these pumps may be limited. Also, they are not suitable for high-speed pumping.
Diaphragm vacuum pumps are a versatile subset of laboratory pumps. They are popular for their oil-free construction and low maintenance operation. They are available in a variety of styles and have many optional features. In addition to low maintenance operation, they are chemically resistant and can be used with a variety of sample types. However, diaphragm pumps tend to have lower displacements than other vacuum pumps.
Atmospheric pressure is a key factor in a vacuum pump system
Atmospheric pressure is the pressure created by the collision of air molecules. The more they collide, the greater the pressure. This applies to pure gases and mixtures. When you measure atmospheric pressure, the pressure gauge reads about 14.7 psia. The higher the pressure, the greater the force on the gas molecules.
The gas entering the vacuum pump system is below atmospheric pressure and may contain entrained liquids. The mechanism of this process can be explained by molecular kinetic energy theory. The theory assumes that gas molecules in the atmosphere have high velocities. The resulting gas molecules will then start moving in random directions, colliding with each other and creating pressure on the walls of the vacuum vessel.
Atmospheric pressure is a critical factor in a vacuum pump system. A vacuum pump system is useless without proper atmospheric pressure measurement. The pressure in the atmosphere is the total pressure of all gases, including nitrogen and oxygen. Using total pressure instead of partial pressure can cause problems. The thermal conductivity of various gases varies widely, so working at full pressure can be dangerous.
When choosing a vacuum pump, consider its operating range. Some pumps operate at low atmospheric pressure, while others are designed to operate at high or ultra-high pressure. Different types of pumps employ different technologies that enhance their unique advantages.
The screw pump is less efficient in pumping gases with smaller molecular weight
Vacuuming requires a high-quality pump. This type of pump must be able to pump gas of high purity and very low pressure. Screw pumps can be used in laboratory applications and are more efficient when pumping small molecular weight gases. Chemical resistance is critical to pump life. Chemical resistant materials are also available. Chemically resistant wetted materials minimize wear.
Gear pumps are more efficient than screw pumps, but are less efficient when pumping lower molecular weight gases. Gear pumps also require a larger motor to achieve the same pumping capacity. Compared to gear pumps, progressive cavity pumps also have lower noise levels and longer service life. In addition, gear pumps have a large footprint and are not suitable for tight spaces.
Progressive cavity pumps have two or three screws and a housing and side cover. They are also equipped with gears and bearings. Their mechanical design allows them to operate in high pressure environments with extremely low noise. The progressive cavity pump is a versatile pump that can be used in a variety of applications.
Dry screw compressors have different aspect ratios and can operate at high and low pressures. The maximum allowable differential pressure for screw compressors ranges from 0.4 MPa for 3/5 rotors to 1.5 MPa for 4/6 rotors. These numbers need to be determined on a case-by-case basis.
editor by CX 2023-07-11