Intermittent drops in pressure on an Alliance - WKB226735
Article number: 226735
SYMPTOMS
- Intermittent drops in pressure
- Passes static decay test
- Passes flow rate accuracy
ENVIRONMENT
- Alliance HPLC System
- 2695 Separations Module
- 2695D Dissolution Separations Module
- 2795 Separations Module
CAUSE
Worn or faulty check valve housing
FIX or WORKAROUND
Replace the check valve housing (700002332).
ADDITIONAL INFORMATION
The same scenario can be caused by a faulty prime/vent valve, part WAT270965.
Example of a pressure trace:
