When it is time to replace the diaphragms on the Hypro D30 Diaphragm Pump, use the replacement parts included in this Hypro Buna Diaphragm Repair Kit - 9910-KIT2110.
If your Hypro D30 is in constant use, it is recommended to replace the diaphragms every 3 months or 500 hours to keep your pump performing up to standards. A good indication that the diaphragms will need to be replaced is if you notice oil comes out of the discharge port or if the oil in the sight glass has a milky grey color. This indicates the diaphragms are split and need to be replaced immediately. Running a diaphragm pump with torn diaphragms can cause extensive damage to the pump, which is why it's always a good option to have a repair kit handy just in case your diaphragms sustain damage.
The Hypro 9910-KIT2110 Buna Diaphragm Repair Kit includes: