Core Product Advantages

Fully oil-free built-in vacuum pump, clean air source, multiple specifications and power supplies for integration into various equipment.

Fully Oil-free Reciprocating Piston Structure, Outputting Clean Air Source

The pump chamber requires no lubricating oil, and the output gas is free of oil mist contamination, suitable for supporting equipment with requirements for air source cleanliness.

Compact and Small Model, Convenient for Complete Machine Integration

Relatively small in size and weight, the mounting base has reserved fixing holes, convenient for integration into various equipment cabinets as a built-in negative pressure air source.

Two Versions: H High-Vacuum / V High-Flow

The H version focuses on higher ultimate negative pressure; the V version focuses on larger pumping flow; the corresponding model can be selected according to the process focus.

Rich Power Options: AC / DC Available

AC is suitable for factory mains power; DC 12V/24V/48V is suitable for vehicle-mounted, mobile, and battery-powered equipment.

Reasonable Noise, Low Maintenance Workload

The oil-free structure eliminates the need for regular pump oil filling; the cup seal is a wearing part and can be replaced on-site, reducing later maintenance difficulty.

Original Factory Accessories and Technical Support

Configurable intake filters and silencing components; equipment manufacturer selection evaluation, prototype matching, accessory supply, and troubleshooting consultation.

Two Main Product Classifications

Based on the same hardware platform, flexibly configured by power supply method and usage scenario to quickly match your working condition needs.

AC PIston Vacuum Pump

AC PIston Vacuum Pump

Mains-powered Fixed Equipment

  • Optimized silencing structure, low operating noise, suitable for noise-sensitive environments such as hospitals, laboratories, and homes

  • Fully oil-free piston structure, outputs clean compressed air, no risk of oil mist contamination

  • Mainly powered by AC mains, 110V / 220-240V optional, suitable for fixed equipment

  • Representative models: LP-0200C, LP-0300C, LP-0550C, LP-1400C

  • Suitable for scenarios such as oxygen generators, medical matching, instrumentation, laboratory silent air sources, and household/civil use

DC PIston Vacuum Pump

DC PIston Vacuum Pump

Vehicle-mounted Mobile Equipment

  • DC12V / DC24V / DC48V power supply, suitable for vehicle-mounted, mobile equipment, and battery-powered complete machines

  • Can operate without mains power, suitable for field, vehicle-mounted, and mobile operation scenarios

  • Fully oil-free reciprocating piston structure, outputs clean compressed air, compact body for easy integration

  • Representative models: LP-0300C DC12V, LP-0550C DC12V, LP-1400C DC24V, LP-2400C DC24V

  • Suitable for vehicle-mounted equipment, mobile medical, outdoor instruments, battery-powered complete equipment, and other scenarios

Vacuum Degree Performance Levels

  • H-High Vacuum Type (Model Suffix H) Focuses on Ultimate Negative Pressure

  • Focuses on ultimate negative pressure performance, with ultimate negative pressure up to -980mBar; suitable for working conditions with high requirements for negative pressure values and moderate flow requirements, such as negative pressure pumping of closed chambers and adsorption fixation.

  • V-High Flow Type (Model Suffix V) Focuses on Pumping Flow

  • Focuses on pumping flow, with ultimate negative pressure of -920mBar; suitable for processes requiring fast pumping and large ventilation volume, with moderate requirements for ultimate negative pressure.

Selection Tip: First confirm whether the working condition pursues higher negative pressure or larger pumping flow, then choose H type or V type. *(Note: The original text contains a typo "N type" instead of "V type", translated as "V type" for clarity)*

Overview of Main AC Model Parameters

Specifications overview of the oil-free vacuum pump series for quick matching and selection.

Product Model Motor Power Ultimate Vacuum Rated Voltage Rated Current Rated Flow Product Category

LP-0550H

 0.28 Kw -980 mBar 110V/220-240V 4.8 m3/h 1.3 A

AC PIston Vacuum Pump

LP-1400V

 0.45 Kw -920 mBar 110V/220-240V 9 m3/h 2.0 A

AC PIston Vacuum Pump

LP-1800H

 0.55 Kw 980 mBar 110V/220-240V 8.1 m3/h 5.0/2.5 A

AC PIston Vacuum Pump

LP-2400V

 0.9 Kw -920 mBar 110V/220-240V 14.4 m3/h 7.0/3.5 A

AC PIston Vacuum Pump

LP-3000V

 1.5 Kw -920 mBar 110V/220-240V 15.6 m3/h 6.8 A

AC PIston Vacuum Pump

The DC version has similar flow and pressure indicators at the same power level, powered by DC12/24/48V; HT50Z-01 oxygen generator compressor: power 0.06Kw, flow 0.6m³/h, DC12V.

Working Principle of Leynow Piston Oil-free Vacuum Pump

  • The Leynow piston oil-free vacuum pump is a positive displacement reciprocating piston pump. The motor drives the crankshaft connecting rod mechanism, which drives the piston to reciprocate inside the cylinder.

  • When the piston moves downward, the cylinder volume increases, the internal pressure decreases, the intake valve opens, and gas is drawn into the cylinder;

  • When the piston moves upward, the cylinder volume decreases, the gas in the cylinder is compressed, the exhaust valve opens, and the gas is discharged from the exhaust port;

  • Through the continuous reciprocating motion of the piston, the suction-compression-exhaust cycle is continuously completed to obtain negative pressure vacuum; the interior of the pump chamber relies on the self-lubrication of the piston cup seal, requiring no lubricating oil, and the output gas is free of oil contamination.

  • Note: The actual vacuum effect obtained is affected by external conditions such as pipelines, filtration, extracted media, and ambient temperature.

Technical Information & Materials

Compiled technical reference materials related to vacuum pumps for selection, equipment commissioning, and troubleshooting.

Project Selection Reference Suggestions
  • Confirm core indicators: required ultimate vacuum, actual pumping volume;
  • Clarify the extracted medium: water vapor, dust, corrosive gases, etc., to determine whether filtration, condensation, or explosion-proofing is needed;
  • Confirm the usage environment: indoor/outdoor, on ships, high temperature and humidity, dust environment;
  • Usage mode: intermittent use or long-term continuous operation;
  • Standalone equipment or a complete central vacuum station.

Applicable Industries and Typical Processes

The piston oil-free vacuum pump is compact, suitable for standalone use or embedded in complete equipment as a built-in negative pressure air source unit.

Applicable Scenarios

Medical Equipment Supporting Industry

Medical Equipment Supporting Industry

Negative pressure air source matching for various medical equipment.

Instrument Manufacturing Industry

Instrument Manufacturing Industry

Built-in negative pressure unit for analytical and testing instruments.

Packaging and Printing Industry

Packaging and Printing Industry

Vacuum adsorption, material adsorption and conveying.

Laboratory and Scientific Research Industry

Laboratory and Scientific Research Industry

Negative pressure pumping for small chambers, physical and chemical experiment assistance.

New Energy Equipment Industry

New Energy Equipment Industry

Degassing and adsorption tooling for small battery equipment.

Automation Equipment Industry

Automation Equipment Industry

Vacuum adsorption and fixing of fixtures and tooling.

Vehicle-mounted Mobile Equipment Industry

Vehicle-mounted Mobile Equipment Industry

DC models matched with vehicle-mounted mobile equipment.

Food and Light Industry

Food and Light Industry

Small vacuum adsorption, simple negative pressure processes.

Typical Processes

Medical Equipment Negative Pressure Suction Matching

Medical Equipment Negative Pressure Suction Matching

Negative pressure air source unit for medical equipment.

Built-in Vacuum Source for Instruments and Equipment

Built-in Vacuum Source for Instruments and Equipment

Micro negative pressure pump integrated inside the complete machine.

Vacuum Adsorption, Clamping, and Fixing of Workpieces

Vacuum Adsorption, Clamping, and Fixing of Workpieces

Negative pressure adsorption and positioning of workpieces by fixtures.

Pre-pumping Vacuum for Small Chambers in Laboratories

Pre-pumping Vacuum for Small Chambers in Laboratories

Negative pressure pre-treatment for small experimental chambers.

Material Adsorption and Conveying in Packaging Equipment

Material Adsorption and Conveying in Packaging Equipment

Adsorption and handling of paper and film in packaging machines.

Degassing Treatment of Small New Energy Components

Degassing Treatment of Small New Energy Components

Simple degassing of small battery components.

Negative Pressure Air Supply for Vehicle-mounted Mobile Equipment

Negative Pressure Air Supply for Vehicle-mounted Mobile Equipment

Negative pressure supply for DC pump vehicle-mounted and mobile equipment.

Small Negative Pressure Process Air Source for Light Industry

Small Negative Pressure Process Air Source for Light Industry

Negative pressure process matching for various small equipment.

Selection and Usage Tips:

  • H models focus on ultimate negative pressure; V models focus on pumping flow. Do not only look at power when selecting; match the two core parameters of negative pressure and flow;

  • When extracting gases containing dust and water vapor, always install filtration and gas-water separation devices at the front end to protect the cup seal wearing parts;

  • Piston pumps are prioritized for intermittent working conditions, and long-term uninterrupted 24h full-load continuous operation is not recommended; for high-frequency use, it is recommended to add intermittent start-stop control;

  • Actual negative pressure and flow are affected by pipe length, pipe diameter, joint leakage, and ambient temperature;

  • The cup seal is a wearing part and needs regular inspection and replacement according to working conditions.

Customer FAQs

Summary of common questions to help with quick selection.

How to choose between H model and V model?

If higher ultimate negative pressure is needed, prioritize H type; if larger pumping flow is needed and the negative pressure requirement is moderate, prioritize V type. Select based on working condition parameters.

Are the performances of DC pumps and AC pumps the same?

Under the same specification level, the performance indicators are similar; the difference lies in the power supply method; DC is suitable for vehicle-mounted mobile equipment, and AC is suitable for fixed mains power scenarios in factories.

Can the piston oil-free vacuum pump work continuously for 24 hours without stopping?

This series is mainly for intermittent working conditions; if long-term continuous operation is required, it is recommended to implement intermittent start-stop control to reduce component wear.

Which parts are wearing parts?

The piston cup seal is a consumable wearing part; the intake filter element also needs regular cleaning and replacement.

Can special voltages and customized interfaces be made?

You can submit requirements to evaluate customization feasibility, and contact the business department to obtain a solution.

Do you have any questions about vacuum pump systems and solutions?

Please fill in your requirements carefully, and we will contact you within 24 hours.

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