Product details:

Rebuild kit for Delta Whitewater DF50 septic air pumps If your Delta Whitewater linear diaphragm aerator/air pump has stopped working, consider using a rebuild kit to repair your aerator/air pump before purchasing a replacement. This rebuild kit is for Delta Whitewater DF50 pumps that have been used as a replacement for Delta Whitewater DF50 aerators. Delta Whitewater is a trademark of Pentair Water.