Staged Scroll Technology

Patented staged scroll technology from Air Squared allows for high vacuum capability in a compact and lightweight design - ideal for applications with challenging performance, size, and weight requirements.

Modern innovation drives technological progress into an ever-shrinking footprint, continuously challenging pneumatic solutions to deliver better performance in less space. Simultaneously reducing moving parts and increasing or maintaining performance, patented staged scroll technology from Air Squared is ideally suited for vacuum applications with challenging size and weight restrictions.

Staged scroll technology adds a second involute to the back of the orbiting scroll and a mating involute to the housing, packaging multiple vacuum stages (in series or parallel) in a single compact design. All stages operate using a common crankshaft, motor, and housing, substantially reducing the size, weight, and componentry. The unique configuration can be used to create compact two-stage, three-stage, or four-stage scroll designs. Learn More


100% Oil-Free
Maintain the purity of your system with oil-free scroll technology
Compact, Lightweight Design
Space-saving staged scroll arragement has fewer moving parts than competing technology
High Vacuum Performance
Deep vacuum capability with patented staged scroll technology
Quiet, Smooth Operation
Dynamically balanced, valve-less, and nearly pulsation-free
Efficient Performance
Continuous vacuum process with no re-expansion or throttling losses


  • Mass Spectrometry
  • Backing Turbo Pump
  • Scanning Electron Microscopes
  • High Energy Physics
  • Vacuum Coating
  • Helium Leak Detection
  • General Laboratory Vacuum
  • Aerospace Environmental Atmospheric Monitoring
  • ORC Waste Heat Recovery

Staged Scroll Technology Products and Projects

View past projects that supported staged scroll technology development or find your vacuum pumps solution with products engineered specifically for OEMs.

Staged Scroll Technology Products

V10T016A-BLDC Two-Stage Scroll Vacuum Pump


Max Vacuum: 0.133 mbara Max Flow: 20 lpmv

Two-stage, oil-free, scroll vacuum pump for high-vacuum performance in a compact and lightweight design.

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Staged Scroll Technology Projects

P07T013A-BLDC-C-SH Two-Stage, Semi-Hermetic Scroll Compressor

Two-Stage Scroll Compressor for Vapor Compression Refrigeration

January 21, 2019

The semi-hermetic and two-stage P07T013A-BLDC-C-SH provides oil-free compression for organic vapor refrigeration and organic solvent extraction applications.

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V07T016A-BLDC-SH Two-Stage Helium Scroll Pump

Two-Stage Helium Scroll Pump

March 5, 2018

The V07T016A-BLDC-SH was designed specifically for pumping helium as efficiently as possible in a compact size.

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P11T025B-BLDC-SH Semi-Hermetic Two-Stage Scroll Compressor

Two-Stage Semi-Hermetic Compressor for Aerospace

July 28, 2016

The two-stage semi-hermetic P11T025B-BLDC-SH compressor combines high-performance, efficiency, and reliability, in a compact and lightweight design.

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Miniature Vacuum Pump for Handheld Mass Spectrometry

March 17, 2013

The miniature two-stage V05T010A-BLDC-C vacuum pump is one of the smallest scroll devices ever designed.

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40 kW Two-Stage Scroll Expander

December 1, 2010

The largest scroll device ever constructed.

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V12T22N4.0 Three-Stage Scroll Vacuum Pump

High-Vacuum Three-Stage Scroll Pump

March 1, 2009

Patented three-stage scroll vacuum pump is first of its size to provide under 5 mTorr vacuum without a turbo pump.

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40 kW Two-Stage Lubricated Scroll Expander

March 18, 2008

The E44T88N4.25L semi-hermetic scroll expander is intended for use in an organic rankine cycle.

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E36T67N5.0 Two-Stage Scroll Air Expander

Two-Stage Scroll Air Expander

October 18, 2007

The E36T67N5.0 scroll air expander features a two-stage scroll configuration for up to 50kW output power.

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V10T16N4.0 Two-Stage Scroll Vacuum Pump

V10T16N4.0 Two-Stage Vacuum Pump

October 11, 1999

The first two-stage scroll vacuum pump, designed for mass spectrometry.

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Staged Scroll Technology News

Zero-Gravity Vapor-Compression Refrigerator (ZVCR) Concept Rendering

Development of Zero-Gravity Refrigeration System Continues

June 4, 2018

Air Squared has been awarded Phase II Small Business Innovative Research (SBIR) funding from NASA to continue development of a Zero-Gravity Vapor-Compression Refrigerator (ZVCR) for space-bound food storage.

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Single-Stage Spinning Martian Atmosphere Scroll Compressor (MASC) Concept Rendering

NASA Award Funds Development of Martian Atmosphere Scroll Compressor

May 21, 2018

To investigate using mechanical CO2 in the Mars environment, Air Squared will use Phase II SBIR funding to develop a Martian Atmosphere Scroll Compressor (MASC).

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Concept Rendering of Integrated Compressor-Expander for Zero-Gravity Vapor Compression Refrigeration (ZVCR)

Space-Bound Refrigeration System Development Funded by NASA

April 11, 2018

Air Squared has been awarded a NASA Phase I SBIR to develop a cold storage foodstuff refrigeration system for space travel.

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Multi-Stage Scroll Compressor Concept

NASA Funds Multi-Stage Scroll Compressor Technology

May 5, 2017

Air Squared awarded SBIR Phase I funding to develop two scroll solutions that will support ISRU processes by collecting, separating, pressurizing, or processing gasses from the Mars atmosphere.

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Concept Air Squared Turbomolecular Pump with Two-stage Scroll Vacuum Pump

Two-stage Scroll Roughing Pump Awarded Phase I SBIR Funding

September 7, 2016

The US Navy, in connection with their effort to explore ruggedized, condition-based maintenance for vacuum insulation systems, has awarded Phase I SBIR funding to Air Squared to develop a compact two-stage scroll roughing pump with an integrated turbomolecular backing pump.

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Mars Oxygen ISRU Experiment (MOXIE) Logo

Air Squared Awarded Contract to Develop Scroll Compressor in NASA MOXIE Demonstration Unit for Mars 2020 Mission

February 2, 2016

Air Squared has been awarded a contract from the Jet Propulsion Laboratory to design and develop a CO2 scroll compressor that will be used in the MOXIE technology demonstration experiment for the Mars 2020 mission.

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V12T22N4.0 Three-Stage Scroll Vacuum Pump

Three-stage Scroll Vacuum Pump

July 12, 2009

New three-stage scroll pump is first of its size to produce 5 mTorr vacuum without turbo boost – 10 times greater than standard-size pumps.

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Two-Stage Scroll Technology

January 1, 2003

Compact new vacuum pump draws on patented two-stage scroll technology to provide clean, quiet, reliable performance on portable lab and medical devices.

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Custom Scroll Design

Contact Air Squared to learn how a custom staged scroll vacuum pump can support your application by providing the most advanced oil-free, high vacuum solution available.

Advanced Custom Design Capability with Staged Scroll Technology

For over twenty-five years, Air Squared has continuously challenged the limits of possibility with scroll technology. With the introduction of patented staged scroll technology and an ever-expanding range of custom design capability, put our innovations to work in your application.

Oil-Free Scroll Design

Orbiting scroll technology offers a quiet oil-free alternative to traditional technology like piston, diaphragm, and vain.

High Vacuum

Using patented coatings and staged scroll technology, scroll vacuum pumps can achieve high vacuum without the need for a roughing pump.

Compact Footprint

Unique staged configurations allow scroll compressors and vacuum pumps to fit in small space envelope without sacrificing


Using patented staged scroll technology, vacuum pump solutions can engineered incredibly lightweight.

Gases other than Air

With several patented sealed and semi-hermetic configurations, staged scroll vacuum pumps can be designed for compatibility with a wide-range of working fluids.

Staged Scroll Technology Explained

Staged scroll technology significantly reduces the size and weight of an oil-free scroll design. This is the best place to start for a basic understanding of the technology and how it can support your application.


Range Capability

Flow Rates0 – 3,000 lpmv
Vacuum < 2 mTorr
Expansion Output 10 -80 kWe
Staged Scroll Technology Exploded View

Staged Scroll Technology Exploded View (from Front and Rear)

Staged scroll technology describes a patented configuration that allows multiple stages to be arranged in a single compact package to increase pressure or increase flow. All stages share a common crankshaft, motor, and housing. The unique configuration can be used for two-stage, three-stage, or four-stage scroll designs and can operate in series, parallel, or both.

In a two-stage design, an additional involute is added to the back of the orbiting scroll and a mating involute is added to the housing, allowing a single orbiting scroll to be used for two stages simultaneously.

Each stage can be optimized based on the required displacement and required vacuum, compression, or expansion.

Staged scroll technology allows all stages to share a common crankshaft, motor, and housing. By removing redundant components between stages from the design, the overall footprint of the design is substantially reduced without sacrificing performance. The reduced part count also improves reliability, reduces cost, and reduces weight.