ITT TruBlue 710, Инструкция по установке, эксплуатации и обслуживанию

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Installation
Model 710 TruBlue Installation, Operation, and Maintenance Manual 31
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. Enough distance to prevent cavitation
2. Eccentric reducer with a level top
Example: Suction piping equipment
Correct Incorrect
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. 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 in-
stalled in the discharge line. The isolation valve is required for:
See Example: Discharge piping equipment for
illustrations.
Check that a check valve is installed in
the discharge line, between the isola-
tion valve and the pump discharge
outlet. 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
illustrations.
If increasers are used, check that they
are installed between the pump and
the check valve. See Example: Discharge piping equipment for
illustrations.