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.

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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

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Staged Scroll Technology Projects

V07T016A-BLDC-SH Two-Stage Helium Scroll Pump

Two-Stage Helium Scroll Pump

March 05, 2018

Multi-stage scroll technology from Air Squared allows for higher pressure ratios in a compact, lightweight, and efficient design. Typically used by Air Squared in vacuum pump designs that require low absolute pressure, multi-stage scroll technology can also be used to compress gases from low inlet pressures to a higher discharge pressure. The V07T016A-BLDC-SH was designed […]

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

Two-Stage Scroll Compressor for Vapor Compression Refrigeration

January 21, 2018

Designed as the driving compressor in the innovative Zero-Gravity Vapor Compression Refrigerator for space-bound food storage, the two-stage and semi-hermetic P07T013A-BLDC-C-SH scroll compressor is adaptable for several commercial refrigeration applications. The semi-hermetic housing facilitates compatibility with different working fluids, including air, inert gases, and refrigerants. The Two-stage design minimizes size and power requirements while maximizing […]

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

Two-Stage Semi-Hermetic Compressor for Aerospace

July 28, 2016

In early 2016, Air Squared was awarded a contract from Jet Propulsion Laboratory (JPL) to develop a semi-hermetic scroll compressor that is capable of boosting Mars atmospheric pressure to match atmospheric pressure on Earth (7 Torr to 760 Torr). The compressor is part of the Mars Oxygen ISRU Experiment (MOXIE) technology demonstration experiment for the […]

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Miniature Vacuum Pump for Handheld Mass Spectrometry

March 17, 2013

For sensing hazardous material in a handheld mass spectrometer, the compact and lightweight V05T010A-BLDC-C is 50mm by 30mm and weighs just under 250 grams. The unit is one of the smallest Air Squared designs to date and the first miniature pump to incorporate patented two-stage vacuum technology. The scope of the design project called for […]

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40 kW Two-Stage Scroll Expander

December 01, 2010

Designed for waste heat recovery, the semi-hermetic 40 kW scroll expander features two stages and operates at approximately 80% efficiency. UPDATE (March 29th, 2014) – Development of a second generation large-scale expander is complete. The E46H122A-SH single-stage expander had modifications for increased power output.

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V12T22N4.0 Three-Stage Scroll Vacuum Pump

High-Vacuum Three-Stage Scroll Pump

March 01, 2009

Developed for the Department of Homeland Security, the V12T22N4.0 scroll vacuum pump is designed around high-vacuum performance in a compact and lightweight package. The unit is specifically purposed for portable mass spectrometry and other gas analysis applications. The V12T22N4.0 features a unique three-stage scroll configuration that provides high-vacuum capability without a turbo pump. The patented […]

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40 kW Two-Stage Lubricated Scroll Expander

March 18, 2008

Designed for use in an organic rankine cycle (ORC) to recover wasted heat, the E44T88N4.25L scroll expander leverages a patented two-stage scroll configuration to produce up to 40 kW output power. The unit requires lubricant to be cycled through with the working fluid and incorporates semi-hermetic design features for adequate sealing. The unit is one […]

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E36T67N5.0 Two-Stage Scroll Air Expander

Two-Stage Scroll Air Expander

October 18, 2007

Designed for Energetix, the E36T67N5.0 uses a two-stage scroll configuration to provide up to 50kW output power. The unit is rated for a maximum inlet pressure of 14 bara and operates at 1,800 RPM. Prototypes will be used to expand air in an uninterruptible power supply (UPS) application. A UPS provides emergency power when the […]

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V10T16N4.0 Two-Stage Scroll Vacuum Pump

V10T16N4.0 Two-Stage Vacuum Pump

October 11, 1999

Patented two-stage scroll compressor technology allows the pump to provide less than 10 mt ultimate vacuum while measuring only 3.75″ wide x 4.5″ high x 6.0″ long and weighing just 4 lbs. Its lightweight, unobtrusive design makes it easy to integrate onboard portable devices such as vacuum sterilization equipment, detectors, and mass spectrometers, as well […]

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Staged Scroll Technology News

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

NASA Award Funds Development of Martian Atmosphere Scroll Compressor

May 21, 2018

Broomfield, CO — The National Aeronautics and Space Administration (NASA) has awarded Air Squared Phase II Small Business Innovation Research (SBIR) funding to further develop its technology for In Situ Resource Utilization (ISRU) processes by collecting, separating, pressurizing, or processing gasses from the Mars atmosphere. The award follows a Phase I SBIR award where Air […]

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

Development of Zero-Gravity Refrigeration System Continues

May 04, 2018

Broomfield, CO –Air Squared is one step closer towards developing another innovation for the commercial space industry with Phase II Small Business Innovative Research (SBIR) funding for a Zero-Gravity Vapor-Compression Refrigerator (ZVCR) from the National Aeronautics and Space Administration (NASA). The Phase II SBIR award will allow Air Squared to fabricate and test a full-scale […]

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Multi-Stage Scroll Compressor Concept

NASA Funds Multi-Stage Scroll Compressor Technology

May 05, 2017

Broomfield, CO — Air Squared has been awarded Phase I Small Business Innovation Research (SBIR) funding through the National Aeronautics and Space Administration (NASA) under the topic Mars Atmosphere Acquisition, Separation, and Conditioning for In Situ Resource Utilization (ISRU). The SBIR award follows Air Squared’s work with the Jet Propulsion Laboratory (JPL) on the Mars […]

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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

March 31, 2017

Broomfield, CO — The National Aeronautics and Space Administration (NASA) has awarded Air Squared Phase I Small Business Innovation Research (SBIR) funding to develop a scroll-based zero-gravity vapor compression refrigeration (ZVCR) system for improved cold storage in space travel. The award follows a 2017 solicitation under the Logistics Reduction (H3.04) subtopic that is part of […]

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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 07, 2016

Figure 1: Concept Air Squared Turbomolecular Pump with Two-stage Scroll Vacuum Pump Broomfield, CO — The US Navy has identified an autonomous vacuum system as a key component to eliminating maintenance on current shipboard vacuum isolation systems. The cost of maintenance for current vacuum insulation systems is estimated at $550,000 US per ship over the […]

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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 02, 2016

Broomfield, CO – After finishing an extensive paper study that evaluated the feasibility of designing a scroll compressor for the Jet Propulsion Laboratory (JPL), Air Squared, Inc. has been awarded a contract to develop two CO2 scroll compressor designs that will be used in the Mars Oxygen ISRU Experiment (MOXIE) technology demonstration experiment for the […]

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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 01, 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 be 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 Rates 0 – 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.