591611 - Diaphragm Pump Air Operated, 0.5" P-1 Polypropylene
591612 - Diaphragm Pump Air Operated, 1" P-2 Polypropylene
591613 - Diaphragm Pump Air Operated, 1.5" P-4 Polypropylene
591614 - Diaphragm Pump Air Operated, 2" P-8 Polypropylene