A notch keeps the plunger in the retracted position.1-5-M10X1-AK-NI Indexing Plunger To achieve this, the knob is rotated by 90 degrees after being retracted.GN617..
2 A, Phase - Pumps 1, Number of Stages 7, Number of Wires 2, Discharge Head Material Thermoplastic, Impeller Material Acetal, Shaft Material 17-4 PH Stainless Steel, Nominal Flow Rate 22 gpm, Flow Rate @ 100 Ft.Operating Temp.