Discharge Piping Checklist - ITT GOULDS PUMPS ICO i-FRAME Installation, Operation And Maintenance Manual

4.6 Piping checklists
Example: Suction piping equipment
Correct
5
1. Suction pipe sloping upwards from liquid source
2. Long-radius elbow
3. Strainer
4. Foot valve
5. Eccentric reducer with a level top

4.6.4 Discharge piping checklist

Checklist
Check
Check that an isolation valve is installed in
the discharge line. For specific gravity less
than 0.60, minimize distance from pump
discharge.
Check that a check valve is installed in the
discharge line, between the isolation valve
and the pump discharge outlet.
If increasers are used, check that they are
installed between the pump and the check
valve.
40
1
2
4
3
Explanation/comment
The isolation valve is required for:
•
•
•
•
See Example: Discharge piping equipment for illustra-
tions.
The location between the isolation valve and the pump
allows inspection of the check valve.
The check valve prevents damage to the pump and seal
due to the back flow through the pump, when the drive
unit is shut off. It is also used to restrain the liquid flow.
See Example: Discharge piping equipment for illustra-
tions.
See Example: Discharge piping equipment for illustra-
tions.
Model ICO i-FRAME, ICOH i-FRAME Installation, Operation, and Maintenance Manual
Incorrect
1. Air pocket, because the eccentric reducer is not
used and because the suction piping does not
slope gradually upward from the liquid source
Priming
Regulation of flow
Inspection and maintenance of the pump
Reduce risk of pumpage vaporization and vapor
locking at low flow rates for low specific gravity liq-
uids.
1
Checked