Hakko Diaphragm Set for HK150, 200 & 250

The Hakko Diaphragm Set for HK150, 200 & 250 kit is a convenient replacement set designed specifically for Hakko and Matala air pumps, helping restore proper airflow and extend the life of your aeration system. Over time, the internal diaphragms in air pumps naturally wear out due to constant flexing, which can lead to reduced performance or a complete loss of airflow.

If your pump is still running but not producing any air, a worn or damaged diaphragm is usually the most common cause. Replacing the diaphragm with this kit is a simple and cost-effective way to get your pump back to optimal operation without needing to replace the entire unit. Frequent diaphragm failure can sometimes indicate an underlying issue, such as excessive back pressure in your system. This often occurs when air stones, diffusers, or airline tubing become clogged—commonly from calcium buildup or debris. Regular inspection and cleaning of these components can help prevent premature wear and ensure consistent airflow.

This kit includes 4 pieces, providing the essential components needed for a standard diaphragm replacement. It’s an ideal maintenance item for pond owners, aquaculture systems, and hydroponic setups that rely on steady aeration to support fish health, oxygen levels, and overall water quality.