Progressive Pumps stocks diaphragm pumps from LMI, Durameter, Neptune, and Pulsafeeder. Solenoid- and motor-driven pumps from LMI are capable of flows from 0.01 GPH to 300 GPH, with discharge pressures up to 300 psi. The EVA and EVA-1 pumps from Durameter provide a flow range from 0.08 to 220 GPH, with pressures up to 3,500 psig. Neptune metering pumps feature a hydraulic backed diaphragm with capacities to 80 GPH at 100 psi, and maximum pressure to 1,100 psi. Lastly, Pulsatron A, C, E, and E-Plus Series electronic pumps offer flows up to 500 GPD at 20 psig.