Check
Explanation/comment
Checked
If quick-closing valves are installed in the
system, check that cushioning devices are
used.
This protects the pump from surges and water hammer.
Example: Discharge piping equipment
Correct
Incorrect
1
2
3
4
1.
Bypass line
2.
Shut-off valve
3.
Check valve
4.
Discharge isolation valve
2
1
1.
Check valve (incorrect position)
2.
The isolation valve should not be positioned be-
tween the check valve and the pump.
4.6 Piping checklists
46
Model CV 3196 i-FRAME Installation, Operation, and Maintenance Manual