Goulds Pumps IC - IOM - Manual (Page 36)

Example: Elbow close to the pump suction inlet
Correct Incorrect
The correct distance between the inlet flange of the pump and
the closest elbow must be at least five pipe diameters.
1
2
1. Enough distance to prevent cavitation
2. Eccentric reducer with a level top
Example: Suction piping equipment
Correct Incorrect
1
2
3
4
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
1
1. Air pocket, because the eccentric reducer is not
used and because the suction piping does not slope
gradually upward from the liquid source
Discharge piping checklist
Checklist
Check Explanation/comment Checked
Check that an isolation valve is
installed in the discharge line.
The isolation valve is required for:
• Priming
• Regulation of flow
• Inspection and maintenance of the pump
See Example: Discharge piping equipment for
illustrations.
Check that a check valve is installed in
the discharge line, between the
isolation valve and the pump discharge
outlet.
The location between the isolation valve and the
pump allows inspection of the check valve.
Installation
34 Model IC, ICI, ICH, ICIH Installation, Operation, and Maintenance Manual