
Plumbing NGC Systems
Installation Guide | 115
To plumb the buffer blending valve
Connect the inlet tubing to ports Q1–Q4 on the buffer blending valve.
Note: The buffer inlet tubing is color-coded to identify the different buffer
solutions.
The color scheme for the tubing and ports is defined as follows:
Green Q4 High salt buffer
Yellow Q3 Water
Blue Q2 Buffer base
Red Q1 Buffer acid
Tubing color Port Solution
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