Dry Compressors

Pressure Wave Systems is exploring the use of electro-hydraulically driven metal bellows for dry compression. Our systems consist of a compression cylinder which holds a metal bellow. This bellow is being compressed by hydraulic oil from the outside. In this way we generate an absolutely clean compression space without any possible contamination of the working gas.


Based on this technology we have developed a 1 kW class compressor for the operation of Gifford-McMahon and pulse tube cryocoolers.

01. Gas
02. Metal bellow
03. Hydraulic cylinder
04. Oil
05. Gear pump
06. Electrical motor

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