Diaphragm Pumps

ARO Expert (EXP) series diaphragm pumps feature SimulShift valves and positive seals to prevent downtime caused by stalling and blow-by.

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ARO Expert (EXP) series diaphragm pumps feature SimulShift valves and positive seals to prevent downtime caused by stalling and blow-by. The valves are said to provide reliable, ultra-positive shift signals that deliver faster trip-over with less pulsation. They eliminate air valve centering with a design featuring a large diameter on one end of the valve and a small diameter on the opposite end, creating the optimal pressure differential. Since the valves are always biased toward one side, they do not center out and stall the pump, even under low air inlet pressures. The pumps also use high-efficiency motors that, combined with other energy-conserving design features, are said to generate energy cost savings or more than $600 per year per pump.