This used Howden compressor was set up for helium service, thus the WLV model designation. It is appropriate for light gases but may work with heavier gases as well. I believe the tolerances are closer that what is used for heavier gases.
We also have five other units with the following WLV preface: 321/19326; 321/193.50; 321/19326; 321/193.50; 321/193.26
Apprx dimensions: 77" lg x 46" ht x 36" wide, 7000 lbs.
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