White Knight PPMC300, Owner'S Manual

Page: 14 / 20

12 Manual Version 1.0.7
•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
Copyright © 2022 White Knight Fluid Handling | A Graco company 6 October 2022
5.5 Pumping for Accuracy
This pump is designed as a device that creates backpressure to move chemistry from one location to another.
Some customers may want to use this device for dosing or for more precision pumping applications. In order to
achieve the higher accuracy required for pumping for dosing type applications it is recommended to pump though
an orifice or into a line with some back pressure. Adding back pressure on the pump’s outlet makes the pump
perform more repeatable and reduces wear on the checks, which will give a more constant performance over the
life of the pump. When the outlet is restricted, then the flow will be analogous to a pressurized line flowing through
a known orifice, resulting in a more stable flow.
5.6 Flow Curves
*300 mL/min at wide open flow path. The Flow Chart measurements shown are using a back-pressure
regulator to simulate a pressurized system; results may vary.