Neptune™ 500-E Series Hydraulic Metering Pumps offers an economical alternative to the standard 500 Series pumps or a packed plunger pump including the Neptune Variable Oil By-Pass™. The Variable Oil By-Pass stroke adjustment allows improved valve performance over variable linkage designs. Comes standard with 1/3 HP, 1ph, 115 VAC, 60C, TEFC motor with other options available. Offers 316 Stainless Steel, PVC or PVDF Liquid Heads & PTFE Diaphragms. Capacities range from 2 gph (7.50 L/h) to 34 gph (129 L/h). 1,100 psi (75.8 bar) maximum pressure on certain configurations. Maximum Temperatures: 316SS - 200°F (93°C); PVC & PVDF- 125°F (52°C).
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