Product Description


Product Description

GWSP Oil free Scroll Vacuum Pump

Working principle:
GWSP oil free scroll vacuum pump is constructed with pump head assembly, crank pin assembly, bracket assembly, air flush assembly,and exhaust valve assembly.Two spiral cylinders, 1 offset and orbiting against the other fixed with an offset of 180° to form several crescent-shaped pockets of different sizes. By means of an eccentric drive, the orbiting scroll is made to orbit about the fixed scroll, reducing the volume of the pockets and compressing gas from outside towards the inside thereby pumping the gas from vacuum chamber.

Basic informations:
1) Model: GWSP75 Oil free scroll vacuum pump
2) Ultimate vacuum pressure: 8.0Pa/0.08 mbar (abs.)
3) Max suction capacity: 50Hz-1.0L/s 60Hz-1.2L/s

Safety Precautions:
The GWSP series oil free scroll vacuum pumps are suitable for clean processes only.
Do not pump toxic, explosive, flammable or corrosive substances or substances which contain chemicals, solvents or particles.GEOWELL will not perform maintenance work on pumps which have used special gases or other hazardous substances.
Be sure the inlet gas temperature must be lower than 122 °F.

Technical Specifications

Technical Specifications:

  Model GWSP40 GWSP75 GWSP150 GWSP300 GWSP600 GWSP1000
  Displacement 50Hz l/s 0.5 1.0  2.0  4.3 8.7 16.6
m3/h 1.8 3.6 7.2 15.5 31.3 59.8
cfm 1.1 2.1 4.3 9.3 18.7 35.8
60Hz l/s 0.6 1.2 2.4 5.1 10.4 20.0 
m3/h 2.2 4.3 8.6 18.3 37.4 71.6
cfm 1.3 2.5 5.1 10.9 22.3 42.8
  Ultimate Pressure Torr   ≤1.1*10-1   ≤6.0*10-2   ≤4.5*10-2   ≤1.9*10-2   ≤7.5*10-3   ≤7.5*10-3
psi   ≤2.2*10-3   ≤1.2*10-3   ≤9.0*10-4   ≤3.8*10-4   ≤1.5*10-4   ≤1.5*10-4
Pa   ≤15   ≤8   ≤6   ≤2.6   ≤1   ≤1
mbar   ≤1.5*10-1   ≤8.0*10-2   ≤6.0*10-2   ≤2.6*10-2   ≤1.0*10-2   ≤1.0*10-2
  Noise Level dB(A)   ≤54   ≤57   ≤57   ≤60   ≤61   ≤65
  Leakage mbar·l/s 1*10-7
  Max. Inlet/Exhaust Pressure MPa 0.1 / 0.13
  Ambient Operation Temp. ºF 41~104
  Motor 1 phase Power kW 0.25 0.55 0.55 0.55 0.75 --
Voltage V   110~115 (60Hz),200~230 (50Hz) --
Speed rpm 1425(50Hz),1725(60Hz) --
Plug   North America, Europe, UK/Ireland, India --
  Motor 3 phase Power kW -- 0.55 0.55 0.55 0.75 1.5
Voltage V -- 200~230 or 380~415 (50Hz),200~230 or 460 (60Hz)
Speed rpm --      1425 (50Hz),1725 (60Hz)
  Inlet/Exhaust Flange   KF25/KF16 KF40/KF16 KF40/KF16*2
  Dimensions 1 phase mm 326*212*253 450*260*296 455*260*296 493*297*334 538*315*348 --
3 phase mm -- 450*260*296 455*260*296 493*297*334 538*315*348 576*450*402
  Net Weight 1 phase kg 15 21 22 29 36 --
3 phase kg -- 20 21 28 31 54
  Cooling Type   Air cooled
  Others   With air flush

Features & Benefits

Features & Benefits:

No oil clean vacuum.
No oil back-diffusion, no oil mist exhaust, provide clean vacuum environment
Wide product lineup.
Pumping speed covers 3~60 m3 /h, limited vacuum level 1~8 Pa
Suitable for all type of power supply around the world.
110/220/380/460V, 50/60Hz for choose
Low vibration, low noise.
57~65 dB(A), smooth operation
High efficiency, ease of maintenance.
No water cooled, no oil lubricated, no daily maintenance



Quality Control

CMM inspection system assures
fixed tolarance on dimension&shape

Pump Testing


Analyzing instrument and device.
Spectroscopy/scHangZhou electron microscopy.
Space environment simulation machine.
Helium Leak detector.
Mass spectrometer.
Cryopump regeneration.

Food and drug industry.
Freezing dryer.
Vacuum storage.
Medical equipment
Low temperature plasma sterilizer.
Vacuum storage.
Dental equipment.

Vacuum equipment.
Oil free ultrahigh vacuum unit
Oil free vacuum unit

Company Profile

Company Profile
GEOWELL VACUUM CO.,LTD. is a HI-TECH enterprise in China dedicating in manufacturing, research and development, marketing of oil free scroll vacuum pumps and vacuum compressors since 2002. GEOWELL has been providing users and partners with premium quality products that are efficient and dependable, GEOWELL believe the integration of high performance and high reliability product and service will bring the highest value to both our customers and ourselves.


Q: How long can I get the feedback after we sent the inquiry?
A: We will reply you within 12 hours in working day.
Q: Are you direct manufacturer?
A: Yes, we are direct manufacturer with factory and international department; we manufacture and sell all our products by ourselves.
Q: When can you delivery the product to us?
A: Since we are a factory with large warehouse, we have abundant products in store, so we can delivery within 7 days after get your deposit.
Q: Can I add logo to the products?
A: Of course, but we usually have quantity requirement. You can contact with us for details.
Q: How to guarantee the quality and after sales service of your products?
A: We conduct strict detection during production from raw material come in to product delivering shipment. Every product must go through 4 steps inspection from casting, machining, assembling, and performance testing within our factory before shipment, also intact packaging test are insured.
Q: What is your warranty term?
A: There is a 12 months warranty for our export products from the date of shipment. If warranty has run out, our customer should pay for the replacement part.
Q: Is the sample available?
A: Yes, usually we send our samples by Fedex, DHL, TNT, UPS, EMS, SF, Depon, it will take around 3 to 4 days for our customer receive them, but customer will charge all cost related to the samples, such as sample cost and air freight. We will refund our customer the sample cost after receiving the order.

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After-sales Service: Yes
Warranty: 1 Years
Oil or Not: Oil Free
Structure: Scroll Pump
Exhauster Method: a Pair of Vortex Plates
Vacuum Degree: Low Vacuum


scroll vane pump

Can scroll vacuum pumps be integrated into existing industrial systems and processes?

Yes, scroll vacuum pumps can be integrated into existing industrial systems and processes. Here's a detailed explanation:

Scroll vacuum pumps offer several features and characteristics that make them well-suited for integration into existing industrial systems and processes:

1. Compact Design:

Scroll vacuum pumps have a compact design and a smaller footprint compared to some other types of vacuum pumps. This makes them easier to install in existing systems where space may be limited. The compact size allows for flexible placement and integration into different configurations.

2. Versatility:

Scroll vacuum pumps are versatile and can handle a wide range of applications and processes across various industries. They are compatible with processes such as vacuum deposition, drying, degassing, distillation, and more. This versatility makes it easier to integrate scroll pumps into existing systems that may have diverse process requirements.

3. Multiple Connection Options:

Scroll vacuum pumps are designed to offer multiple connection options. They typically have standard inlet and outlet connections, allowing for easy integration into existing vacuum systems or processes. These connections can be customized or adapted as needed to ensure compatibility with the existing system's piping and components.

4. Control and Monitoring Capabilities:

Many scroll vacuum pumps come with built-in control and monitoring features. These can include digital interfaces, remote control capabilities, and real-time monitoring of operating parameters. These features facilitate the integration of scroll pumps into existing industrial systems and allow for seamless communication with other system components and control systems.

5. Retrofitting Options:

In some cases, scroll vacuum pumps can be retrofitted into existing systems as a replacement for older or less efficient vacuum pumps. Retrofitting involves modifying or adapting the system to accommodate the new pump. This can be a cost-effective solution for upgrading the vacuum performance of an existing system without significant redesign or disruption.

6. Compatibility with Different Environments:

Scroll vacuum pumps are designed to operate reliably in a wide range of environments, including industrial settings. They can withstand demanding conditions such as high temperatures, humidity, or vibration, which are commonly encountered in industrial processes. This compatibility ensures that scroll pumps can seamlessly integrate into existing systems without compromising performance or reliability.

When considering the integration of scroll vacuum pumps into existing industrial systems, it is important to assess specific requirements, such as the required pumping speed, ultimate vacuum level, compatibility with process gases, and any specific environmental considerations. Consulting with the pump manufacturer or a knowledgeable supplier can provide valuable guidance on selecting the appropriate scroll pump model and optimizing its integration into the existing system.

By leveraging the compact design, versatility, connection options, control capabilities, retrofitting possibilities, and compatibility with different environments, scroll vacuum pumps can be successfully integrated into existing industrial systems and processes, enhancing their vacuum performance and overall efficiency.

scroll vane pump

Can scroll vacuum pumps be used in laboratory applications?

Yes, scroll vacuum pumps can be used in laboratory applications. Here's a detailed explanation:

Scroll vacuum pumps offer several features and advantages that make them suitable for various laboratory applications:

1. Oil-Free Operation:

Many laboratory applications require a clean and oil-free vacuum environment to maintain the integrity of samples, prevent contamination, and ensure accurate results. Scroll vacuum pumps are available in oil-free versions, eliminating the risk of oil vapor or particles contaminating the vacuum system and samples.

2. Low Vibration and Noise:

In laboratory settings where precision and sensitive measurements are crucial, low vibration and noise levels are important considerations. Scroll vacuum pumps operate with minimal vibration and produce less noise compared to some other types of vacuum pumps, making them suitable for laboratory environments.

3. Compact and Space-Efficient:

Laboratories often have limited space, and equipment that is compact and space-efficient is desirable. Scroll vacuum pumps are relatively compact in size and can be easily integrated into laboratory setups without occupying excessive space.

4. Ease of Use:

Scroll vacuum pumps are known for their user-friendly nature. They typically have simple operating procedures, require minimal adjustments or tuning, and are easy to install and operate. This is advantageous in laboratory settings where researchers and technicians may need to work with multiple instruments simultaneously.

5. Versatile Applications:

Scroll vacuum pumps find applications in a wide range of laboratory processes, including:

- Vacuum filtration

- Rotary evaporation

- Freeze drying

- Glove box systems

- Vacuum ovens

- Vacuum distillation

- Vacuum degassing

- Mass spectrometry

- Electron microscopy

- Gas chromatography

- and many more.

It's important to note that the suitability of a scroll vacuum pump for a specific laboratory application depends on the desired vacuum level, required pumping speed, compatibility with the gases or vapors being handled, and any additional requirements specific to the experimental or analytical techniques being employed.

Before selecting a scroll vacuum pump for laboratory use, it is advisable to consult the manufacturer's specifications and guidelines to ensure that the pump meets the specific requirements of the intended application.

China Custom Gwsp75 Low Noise Low-Energy Maintenance-Free No Oil Scroll Vacuum Pump   wholesaler China Custom Gwsp75 Low Noise Low-Energy Maintenance-Free No Oil Scroll Vacuum Pump   wholesaler
editor by Dream 2024-05-06