The Hypro 9910-KIT1640 Gearbox is compatible with:
•Hypro D30, D303, and D403 Diaphragm Pumps
•Hypro D50, D503, and D813 Diaphragm Pumps (only if used at lower pressures that do not exceed 5.5 HP engine capacity)
•Annovi Reverberi AR30 and AR40 Diaphragm Pumps