Thomas’ linear pumps and compressors are used when high efficiency, low power consumption are necessary and device noise is a major consideration. Linear technology should also be considered if a sealed air path, higher flow at lower pressure ratios, or long life is required. There are no brushes, bearing, rings, vanes, cup seals, which means less parts, less friction, and less failure modes. Thomas offers linear magnetic and vibrating armature series linear pumps.  Vibrating armature series operate with AC voltage and are capable of pressure or vacuum operation, open flows ranging from 0.9 l/min to 8.5 l/min, continuous maximum operating pressure up to 700 mbar, and maximum vacuum up to 550 mbar. Linear magnetic series come in either AC or DC voltages, ranging from 1.5 l/min to 625 l/min open flow, maximum continuous operating pressures up to 450 mbar, and maximum continuous operating vacuum up to 300 mbar

In order to take advantage of the many benefits inherent to linear technology, there are some conditions that should be avoided: 

  • Do not operate at open flow
  • Do not operate with a short on/off intermittent duty cycle
  • Avoid excessive heat (ambient and exceeding max pressure) even if some models can operate in heavy conditions (>40°C and high humidity)
  • Do not ingest any particulates into airstream
  • Do not operate outside ±10% of nominal voltage or exceed recommended pressure/ vacuum ranges

Thomas’ linear pumps and compressors are the best choice for pressure and/or vacuum applications that require oil and contaminant-free air, compact designs, high efficiency, and low power consumption as well as very low sound levels. They provide many hours of reliable performance and energy cost savings.


  • Agency listed
  • DC models available with optional 4-20mA controller input
  • Fewer moving parts
  • High efficiency
  • IP54 protection class on applicable series
  • Long life
  • Low power consumption
  • Low pulsations
  • Low vibration
  • Low starting current
  • Oil-less
  • RoHS/REACH compliant
  • Quiet operation
  • World wide service network


  • Aquaculture
  • Air and Gas Samplers
  • Battery aeration
  • Compression Therapy Devices
  • De-Soldering Machines
  • Grey water treatment
  • Hospital Beds/Air Mattresses
  • Sewage aeration

We are sure that Thomas’ advanced technologies can help you provide the products and services you need.

Please select our linear pump for further information on how we can meet your needs.