Proportion-Air Legacy Products

Legacy products are older models that have been discontinued or will be retired soon. The products listed below are all considered “legacy,” but some are still in production and available for purchase.

If the final obsolete date is known, we will list that below. All of the products that have been retired can be easily crossed-over into a newer model.

Please contact application engineering for support.

Discontinued Products

Product/Model Newer Version
BB-Series  QBX-Series

Nearing Discontinued Status

Product/Model Newer Version


(April 1, 2020;




(date unknown)


QPV (T) – Series

(April 1, 2020; FAQs)

Legacy Products ultima modifica: 2017-11-10T16:05:14-04:00 da admin

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