vacuum pump & cold trap chiller
Oil Free Diaphragm Vacuum Pump for Laboratory and Industrial Use
Item Number : KT-VP
Price varies based on specs and customizations
- Pumping Speed
- 20~70 L/min
- Ultimate Vacuum
- < 2~100 mbar
- Power
- 90~320W
Shipping:
Contact us to get shipping details Enjoy On-time Dispatch Guarantee.
Why Choose Us
Reliable PartnerEasy ordering process, quality products, and dedicated support for your business success.
Applications
Our oil-free diaphragm vacuum pumps are engineered for versatility and purity, making them the preferred choice for a wide range of scientific and industrial processes. Their clean, contaminant-free operation is essential for:
- Laboratory & Research: Ideal for vacuum filtration, solid-phase extraction (SPE), gel drying, rotary evaporation, and vacuum ovens.
- Analytical Instrumentation: Providing fore-vacuum for turbomolecular pumps, and serving as a standalone pump for mass spectrometers, electron microscopes, and surface analyzers.
- Medical & Pharmaceutical: Used in aspiration, degassing of liquids, and sterile environments where product purity is paramount.
- Chemical & Biotech: Safely handling solvent vapors and aggressive media in chemical synthesis, distillation, and biotechnology applications.
- Industrial Processes: Suitable for vacuum chucking, pick-and-place operations, and degassing of components.
Detail & Parts
Every component of our diaphragm pumps is selected for durability and performance, ensuring a long and reliable service life.
- Pump Heads: Precision-machined and designed for optimal gas flow and high compression. Multi-head designs increase pumping speed and improve ultimate vacuum.
- Diaphragm: A flexible, multi-layered diaphragm made from high-grade Polytetrafluoroethylene (PTFE) provides excellent chemical resistance and mechanical longevity.
- Valves: Constructed from perfluoroelastomer (FFKM/Kalrez®) or similar high-performance materials to ensure leak-tight operation and resistance to corrosive gases.
- Drive System: A balanced eccentric cam and connecting rod assembly translates motor rotation into linear diaphragm movement, optimized for low vibration and quiet operation.
- Housing: A compact and robust casing, often with integrated controls and carrying handles, designed to protect internal components and save valuable bench space.
Features
- 100% Oil-Free Operation: Guarantees a clean vacuum, preventing any contamination of your samples, processes, or environment.
- Superior Chemical Resistance: With gas-contacting parts made from PTFE and other fluoropolymers, the pumps can handle corrosive and aggressive vapors without damage.
- High Performance & Stability: Delivers consistent pumping speed and achieves deep, stable vacuum levels suitable for demanding applications.
- Quiet and Low-Vibration: Engineered with a focus on smooth operation, minimizing noise and vibration in the work environment.
- Compact & Maintenance-Free: The space-saving design requires no oil changes or regular lubrication, significantly reducing downtime and operational costs.
- Thermal Protection: An integrated thermal cutout automatically shuts down the motor to prevent overheating, ensuring safety and longevity.Technical Specifications
| Model | DVP-10 | DVP-20 | DVP-20C (Chemical-Resistant) | DVP-40C (Chemical-Resistant) |
|---|---|---|---|---|
| Pumping Speed | 20 L/min | 38 L/min | 38 L/min | 70 L/min |
| Number of Heads | 1 | 2 | 2 | 4 |
| Diaphragm Material | NBR | NBR | PTFE | PTFE |
| Valves Material | FKM | FKM | FFKM | FFKM |
| Ultimate Vacuum | < 100 mbar | < 10 mbar | < 8 mbar | < 2 mbar |
| Max. Pressure | 2.5 bar | 2.5 bar | 1.5 bar | 1.5 bar |
| Rated Motor Speed | 1500 rpm | 1500 rpm | 1500 rpm | 1500 rpm |
| Power Supply | AC 100-240V 50/60Hz | AC 100-240V 50/60Hz | AC 100-240V 50/60Hz | AC 100-240V 50/60Hz |
| Power | 90W | 180W | 180W | 320W |
| Net Weight | 5.5 Kg | 9.0 Kg | 9.5 Kg | 12.5 Kg |
| Dimensions (L×W×H) | 220×145×190 mm | 315×160×200 mm | 315×160×200 mm | 340×240×220 mm |
Please note: Specifications are subject to change without notice. Dimensions are approximate. Please refer to the official datasheet for certified values.
Principle
The oil-free diaphragm vacuum pump operates on the principle of positive displacement, similar to a piston pump, but with a flexible diaphragm isolating the mechanical components from the gas path.
- Eccentric Motion: An electric motor drives an eccentric cam.
- Diaphragm Movement: The eccentric is connected to the diaphragm via a connecting rod. As the eccentric rotates, it pushes the diaphragm up and down within a sealed pump head.
- Suction Stroke: As the diaphragm moves down, the volume of the pump chamber increases. This reduces the pressure, causing the inlet valve to open and draw gas in from the connected system.
- Compression Stroke: As the diaphragm moves up, the chamber volume decreases. This compresses the gas, forcing the inlet valve shut and the outlet valve open, expelling the gas.
- Continuous Cycle: This cycle repeats rapidly, continuously evacuating gas from the system to create a vacuum. Multi-stage pumps connect several heads in series to achieve a deeper ultimate vacuum.
Procedure
Operating the pump is straightforward and designed for immediate use.
- Setup: Place the pump on a flat, stable, and well-ventilated surface. Ensure it is not covered to allow for proper air cooling.
- Connection: Use appropriate vacuum-rated tubing to connect the pump's inlet port (marked 'IN' or 'VAC') to the apparatus you wish to evacuate. If your setup includes a condenser or cold trap, connect the pump after the trap.
- Operation: Plug the pump into a suitable power outlet and turn on the power switch. The pump will immediately begin to evacuate the connected system.
- Monitoring: Observe the vacuum level using a gauge on your system or an integrated gauge on the pump, if available.
- Shutdown: Once your process is complete, vent your system to atmospheric pressure before turning off the pump. This prevents any backflow and prolongs the life of the diaphragm and valves. Disconnect the tubing.
Advantages
Choosing an oil-free diaphragm vacuum pump offers significant benefits over traditional vacuum technologies:
- Purity: Eliminates the risk of oil-based contamination (backstreaming), crucial for sensitive analytical and high-purity applications.
- Low Maintenance: With no oil to monitor, change, or dispose of, maintenance is minimal and service intervals are long, leading to lower lifetime costs.
- Environmental & Safety: Creates no hazardous oil mist in the exhaust and avoids the costs and complexities of oil waste disposal.
- Cost-Effective: While the initial investment may be comparable to other pumps, the total cost of ownership is lower due to reduced maintenance, no oil consumption, and longer service life.
- Versatility: The ability to handle both clean and aggressive vapors makes it a flexible, all-in-one solution for diverse laboratory needs.
Our Commitment to Accuracy and Quality
We are dedicated to excellence in manufacturing. Each oil-free diaphragm vacuum pump is built with precision-engineered components and undergoes a multi-point quality control inspection before shipment. We verify pumping speed, ultimate vacuum, and leak integrity against our stringent specifications to ensure every unit delivers the performance and reliability you expect. Our use of premium materials, like chemically resistant PTFE, ensures our products stand up to the rigors of your application, providing accurate and repeatable results year after year.
Flexible Partnership & Supply Models
We cater to a wide spectrum of customer needs, from individual research labs to large-scale industrial integrations. We offer:
- Direct Sales: Purchase single or multiple units directly for your specific needs.
- OEM & Customization: We partner with instrument manufacturers to provide customized pump solutions, including tailored branding, form factors, and performance characteristics for seamless integration.
- Bulk & Distributor Pricing: Attractive pricing models are available for bulk orders and for our certified distribution partners worldwide.
- Global Logistics: Our established supply chain ensures timely and reliable delivery to any location across the globe.
4.8
out of
5
This pump is a game-changer! Super quiet and efficient—perfect for our lab needs.
4.7
out of
5
Fast delivery and excellent performance. Worth every penny!
4.9
out of
5
Impressed by the durability and oil-free operation. Highly recommend!
4.6
out of
5
Reliable and low maintenance. A solid investment for any lab.
4.9
out of
5
Cutting-edge technology with a compact design. Love it!
4.7
out of
5
Works flawlessly under heavy use. Great value for money.
4.8
out of
5
Silent yet powerful—exactly what we needed for sensitive experiments.
4.9
out of
5
The build quality is outstanding. No regrets at all!
4.7
out of
5
Easy to set up and use. Perfect for industrial applications.
4.8
out of
5
Consistent performance and energy-efficient. A top-tier product.
4.9
out of
5
Delivered ahead of schedule! The pump exceeds expectations.
4.6
out of
5
Robust and reliable. Ideal for long-term lab use.
4.8
out of
5
Innovative design with zero maintenance hassles. Brilliant!
4.7
out of
5
Sleek, efficient, and powerful. A must-have for any lab.
4.9
out of
5
The oil-free feature is a lifesaver. No more messy cleanups!
4.8
out of
5
Precision engineering at its best. Highly satisfied!
4.7
out of
5
Quick delivery and exceptional performance. A+ product.
4.9
out of
5
Perfect balance of power and quiet operation. Love it!
4.8
out of
5
Tech-savvy and durable. Exactly as advertised. Superb!
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