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Charles Austen Diaphragm Kit

The service kit for the Charles Austen ET series air pump includes 2 diaphragms, 1 filter and 1 magnet.

Over time diaphragms lose their efficiency or fail altogether due to work load, heat cycles, and general degradation of the rubber material. Replacing diaphragms each year as part of an annual service will ensure you don't suffer a failure when you need the air pumps the most.