Use the Hypro D30 Repair Kit (D30REPAIRKIT) to fix common wearing problems associated with the Hypro D30 diaphragm pump such as broken diaphragms and worn out valves. The D30REPAIRKIT combines two of Hypro's most popular repair kits, KIT1724 (diaphragm kit) and KIT1917 (valve kit), ensuring you have all the necessary parts needed to fix your Hypro D30 diaphragm pump. It is ideal to use this Hypro repair kit if your D30 is being used constantly. It is always good to replace diaphragms every 3 months or 500 hours and replace valves and o-rings every 6 months or 1000 hours so the pump can stay dependable in the field. This D30 Repair Kit includes 2 black Buna diaphragms (part number 9910-620080), 1 accumulator diaphragm (9910-550190), 1 suction diaphragm (9910-650670), 4 valves (9910-1409050), 4 valve o-rings (9910-620030), and 1 sight glass o-ring (9910-180101). The repair kit is compatible with the Hypro D30 diaphragm pump, but it also can be used on the Hypro D30GRGI, and the D30AP-A with thru shaft.