QBY Diaphragm Pump – Variable Flow Control by Air Regulation
Simple Flow AdjustmentMost pumps need variable frequency drives or complex controls to change flow. The QBY adjusts flow with a simple air regulator. Turn the knob to increase or decrease speed.How It…
Simple Flow Adjustment Most pumps need variable frequency drives or complex controls to change flow. The QBY adjusts flow with a simple air regulator. Turn the knob to increase or decrease speed. How It Works Higher air pressure makes the pump stroke faster. Lower pressure slows it down. Flow is proportional to stroke speed. This gives infinite adjustment within the pump’s range. Practical Benefits • Match flow to process requirements • Reduce splashing during filling • Extend diaphragm life at lower speeds • Save compressed air when full flow isn’t needed
Alternative Method Install a throttle valve on the discharge line. Closing the valve increases backpressure and slows the pump. Applications Summary: variable flow pumping, process control, filling operations, chemical dosing, flow regulation, industrial fluid handling
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