Goulds Pumps 3196 i-FRAME - IOM - Manual (Page 40)

Installation
Example: Suction piping equipment
Correct Incorrect
1. Suction pipe sloping upwards from liquid 1. Air pocket, because the eccentric reducer
source is not used and because the suction piping
2. Long-radius elbow does not slope gradually upward from the
3. Strainer liquid source
4. Foot valve
5. Eccentric reducer with a level top
Discharge piping checklist
Checklist
Check Explanation/comment Checked
Check that an isolation valve is The isolation valve is required for:
installed in the discharge line. • Priming
• Regulation of flow
• Inspection and maintenance of the pump
See Example: Discharge piping equipment for
illustrations.
Check that a check valve is in- The location between the isolation valve and
stalled in the discharge line, be- the pump allows inspection of the check valve.
tween the isolation valve and the The check valve prevents damage to the
pump discharge outlet. 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
illustrations.
If increasers are used, check that See Example: Discharge piping equipment for
they are installed between the illustrations.
pump and the check valve.
If quick-closing valves are installed This protects the pump from surges and water
in the system, check that cushion- hammer.
ing devices are used.
38 Model 3196 i-FRAME Installation, Operation, and Maintenance Manual