Holding a Steady Point in Pharma Process Air

— with a smaller unit running to ~1,060 mmWC at 50 HP

A Maharashtra-based pharmaceutical process-equipment maker builds the machines that other pharma plants run their processes on. Those machines need process air that stays put — a steady flow at a steady pressure, held over long runs, not a number that wanders as the shift wears on. When their equipment is validated, the air moving through it has to behave the same way on hour eight as it did on hour one.

That is the hard part. Pharma process air is not a "move a lot of air" problem — it is a "hold this exact point" problem. Some of these duties sit at high static pressure: one unit works to roughly 1,060 mmWC at 50 HP, which puts real load on the impeller, the shaft and the bearings, and leaves no slack for a selection that drifts off its curve. Pick the fan a little wrong and it either starves the process or runs hot and loud trying to make up the difference.

We supplied direct-drive centrifugal blowers, built to the point — not near it. Direct drive takes the belt out of the loop: no drift as belts stretch, no second alignment to hold, one less thing to service on a machine that has to stay validated. Each blower was selected on our proprietary fan-selection and mechanical-design software to sit on its operating point at the stated duty, then performance-tested in-house on our 200 HP VFD test rig, to the IS 4894 / AMCA 210 method before it left the works. The curve you are promised is the curve we measured.

The relationship has run multi-year, order after order. A process-equipment builder does not send repeat work to a fan supplier unless the earlier fans held their point in the field — that is the only reference that matters here, and it is the one we have earned.

If you build process equipment and need a blower to sit on a defined duty — whatever the flow, whatever the static pressure — send us the point you have to hold. We will select to it, test to it, and tell you plainly if it sits outside what we would stand behind.

— Mihir Kulkarni, Director, Jitamitra Electro Engineering

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