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Oil-Free Dry Scroll Vacuum Pump

Oil-Free Dry Scroll Vacuum Pump

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The S4R Oil-Free Dry Scroll Vacuum Pump provides clean, oil-free primary vacuum for laboratory, battery-research and materials-processing systems where contamination from conventional oil-sealed pumping technology must be avoided.

Available in 10, 15 and 20 m³/h configurations, the DSP Series combines dry scroll compression with ultimate pressures down to 1 Pa, standard KF25 vacuum connectivity and a universal 100–240 V, 50–60 Hz electrical supply.

The compact air-cooled platform operates at approximately 55 dBA and requires no vacuum oil in the pumping chamber, making it particularly suitable for clean vacuum chambers, glove-box systems, analytical instrumentation, tube-furnace lines, vacuum drying, turbomolecular-pump backing and other laboratory processes requiring a clean and dependable mechanical vacuum source.

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Oil-Free Dry Scroll Vacuum Pump

10–20 m³/h Clean Laboratory Vacuum

Oil-Free Primary Vacuum for Clean Laboratory and Materials-Research Systems

The S4R DSP Series Oil-Free Dry Scroll Vacuum Pump provides clean primary-vacuum generation for laboratory, battery-research and materials-processing systems where oil-sealed pumping technology is undesirable.

Three configurations from 10 to 20 m³/h combine dry scroll compression, a KF25 vacuum interface and ultimate pressures down to 1 Pa in a compact, air-cooled platform.

Pumping speed
10 to 20 m³/h
Ultimate pressure
Down to 1 Pa
Pumping technology
Oil-free dry scroll
Vacuum connection
KF25
Product Highlights

Clean vacuum without an oil-sealed pumping chamber

A compact dry-vacuum platform combining oil-free scroll compression, low acoustic output and standard KF25 integration.

01
Oil-free pumping
Dry scroll compression requires no vacuum oil in the pumping chamber, removing an oil source from the process-gas path.
02
Three pumping capacities
10, 15 and 20 m³/h configurations allow pumping capacity to be matched to chamber volume, evacuation time and process requirements.
03
Low operating noise
A nominal noise level of 55 dBA supports installation close to laboratory equipment and research work areas.
04
Universal electrical supply
100–240 V AC, 50–60 Hz operation simplifies integration across international laboratory installations.
Dry Scroll Technology

Progressive gas compression without vacuum oil

A dry scroll pump uses two intermeshing spiral elements. One scroll remains fixed while the second follows an orbital motion, forming gas pockets that move progressively through the compression mechanism.

As these pockets decrease in volume, the gas is compressed and discharged without requiring vacuum oil in the pumping chamber. This makes dry scroll technology particularly suitable for laboratory systems where clean mechanical vacuum is required.

Scope of oil-free operation Oil-free refers specifically to the vacuum pumping chamber and process-gas path. Routine mechanical inspection and servicing remain necessary according to operating conditions and the applicable maintenance schedule.
Process compatibility Oil-free construction does not by itself imply compatibility with all gases and vapours. Corrosive, reactive, strongly oxidising, particulate-loaded or hazardous process streams require an appropriate application review before use.
Performance by Configuration

Three capacities for clean laboratory vacuum

The three configurations share the same dry-scroll pumping principle, KF25 vacuum interface and nominal installation envelope.

S4R Reference Pumping Speed Rotational Speed Ultimate Pressure Rated Power Net Mass
DSP-10 10 m³/h 6.7 cfm 1800 rpm 2 Pa 0.02 mbar 550 W 25.2 kg
DSP-15 15 m³/h 8.9 cfm 1800 rpm 2 Pa 0.02 mbar 550 W 25.6 kg
DSP-20 20 m³/h 13 cfm 1800 rpm 1 Pa 0.01 mbar 750 W 25.8 kg
Ultimate pressure Ultimate-pressure values describe pump performance under defined conditions. The pressure reached in a complete vacuum system also depends on chamber volume, vacuum-line conductance, sealing quality, outgassing, vapour load and system leak rate.
Vacuum-line conductance Effective pumping speed at the chamber can be lower than the nominal pump rating when long, narrow or restrictive vacuum lines are used. Keep the connection between the pump and chamber as short and unrestricted as practical.
Mechanical & Electrical Data

Compact common installation platform

All three configurations use a KF25 vacuum interface, universal 100–240 V AC supply and air-cooled architecture within the same nominal external dimensions.

S4R Reference Vacuum Interface Rated Power Noise Level Net Mass Dimensions L × W × H
DSP-10 KF25 550 W 55 dBA 25.2 kg 442 × 278 × 308 mm
DSP-15 KF25 550 W 55 dBA 25.6 kg 442 × 278 × 308 mm
DSP-20 KF25 750 W 55 dBA 25.8 kg 442 × 278 × 308 mm
Shared footprint All three configurations have nominal external dimensions of 442 × 278 × 308 mm, allowing pumping speed to be selected without changing the required installation footprint.
Clean Vacuum Operation

A dry alternative to oil-sealed primary vacuum

Oil-sealed rotary-vane pumps remain suitable for many general laboratory vacuum processes. For applications where the vacuum path should remain free from pump oil, dry scroll technology provides an alternative mechanical pumping architecture.

The DSP Series requires no vacuum oil in the pumping chamber, reducing routine oil-management requirements and making the pump particularly suitable for clean laboratory vacuum systems.

Application selection The choice between an oil-sealed rotary-vane pump and a dry scroll pump should consider required pressure, process cleanliness, gas and vapour load, chemical compatibility, operating cost and maintenance requirements.
Typical Applications

Clean vacuum across battery and materials research

For laboratory systems requiring clean mechanical vacuum, compact installation and standard KF25 integration.

Battery research
Clean vacuum generation for compatible battery-material preparation, drying, transfer and experimental process systems.
Glovebox antechambers
Evacuation of compatible glovebox antechambers and controlled-atmosphere transfer systems requiring an oil-free pumping path.
Vacuum chambers
Oil-free evacuation of laboratory chambers for materials processing, testing and sample preparation.
Tube-furnace vacuum lines
Clean primary evacuation of compatible furnace systems before controlled-atmosphere or reduced-pressure thermal processing.
Analytical instrumentation
Dry primary vacuum for compatible analytical and research instruments requiring a clean pumping environment.
High-vacuum backing
Foreline pumping for compatible turbomolecular and other high-vacuum systems where the required backing pressure and pumping speed are satisfied.
Technical Specifications

DSP Series specifications

Parameter Specification
Product type Oil-free dry scroll vacuum pump
S4R series DSP Series
Available references DSP-10, DSP-15 and DSP-20
Nominal pumping speeds 10, 15 and 20 m³/h
Ultimate pressure 2 Pa for DSP-10 and DSP-15; 1 Pa for DSP-20
Pumping principle Oil-free dry scroll compression
Rotational speed 1800 rpm
Vacuum connection KF25
Electrical supply 100–240 V AC, 50–60 Hz
Rated power 550 W for DSP-10 and DSP-15; 750 W for DSP-20
Cooling Air cooled
Noise level 55 dBA
Operating ambient temperature 5 to 45 °C
External dimensions 442 × 278 × 308 mm
Net mass 25.2 kg for DSP-10; 25.6 kg for DSP-15; 25.8 kg for DSP-20
Installation Horizontal installation on a stable laboratory bench or floor surface
Operation & Maintenance

Dry operation without routine vacuum-oil management

The DSP Series requires no vacuum oil in the pumping chamber. Routine operation therefore does not require the oil-level monitoring or vacuum-oil replacement associated with oil-sealed primary pumps.

Vacuum performance nevertheless depends on clean sealing surfaces, correct vacuum-line assembly, unrestricted cooling airflow and the mechanical condition of the pump.

1
Inspect Check the pump body, KF25 vacuum connection and ventilation openings before operation.
2
Connect Assemble the vacuum line using clean KF25-compatible components and undamaged sealing surfaces.
3
Start Start the pump and confirm normal operating behaviour before beginning the vacuum process.
4
Operate Maintain unrestricted cooling airflow and keep the gas and vapour load within the requirements of the selected application.
5
Maintain Inspect and service the pump periodically according to operating conditions and the applicable maintenance schedule.
Package Contents

Supplied in the selected configuration

Dry scroll vacuum pump assembly
Complete oil-free dry scroll vacuum pump in the selected DSP-10, DSP-15 or DSP-20 pumping-speed configuration.
Product documentation
Installation, operation and routine-maintenance information for laboratory use.
Vacuum-line components KF25 hoses, clamps, centering rings, valves, cold traps, vacuum gauges and other system-specific accessories are selected separately unless explicitly included in the ordered configuration or quotation.
Installation & Safety

Stable installation with unrestricted cooling airflow

Install the pump on a stable horizontal surface with sufficient clearance around the cooling-air openings for ventilation, inspection and maintenance. The operating ambient temperature should remain within the specified 5 to 45 °C range.

The vacuum exhaust should be routed and managed appropriately for the process. Pumped gases and vapours must remain compatible with the pump and with the complete vacuum installation.

Pump selection Selection should consider chamber volume, required evacuation time, vacuum-line conductance, target operating pressure, gas and vapour load, process cleanliness and chemical compatibility rather than nominal pumping speed alone.

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