ARO EXP Series diaphragm pumps provide high efficiency stall-free, ice-free operation. The patented “unstallable” unbalanced air valve design avoids stalling issues associated with other pumps. The “quick-dump” exhaust valves divert cold exhaust air from ice-prone components, preventing freezing. Backed by a five-year warranty, it is among the most reliable pumps on the market today. For more information:

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