dda 17 7 ar pv v c f 32i002fg 97722169 or a DMX model 221

or a DMX model 221 dosing pump

using the 2 in-line connections

DDC 9-7 AR-PP/E/C-F-32U2U2FG The SMART Digital DDC is a compact positive displacement

pressure gauge

dda 17 7 ar pv v c f 32i002fg 97722169 or a DMX model 221DDA 17 7 AR PV V C F 32I002FG The SMART Digital DDA is a compact positive displacement, diaphragm dosing pump with variable speed drive (stepper motor) and intelligent control electronics with minimum energy consumption. The SMART Digital Dosing series operates at full stroke length to ensure optimum accuracy, priming and suction, even for high viscosity or degassing liquids. The duration of each discharge stroke varies according to the capacity set,