Get current pricing for American Lewa, EL-1V Sanitary Diaphragm Metering Pump. Rated 87 Gph @ 510 Psi Maximum. Stroke 20 Mm Max, Stroke Freq./min. 211, 3 Hp, 1730 Rpm, 230/460 V, Vari-speed Drive . Product Category: Process Equipment, Sub Category: Process Pumps: