1
2
3
4
1.
Float switch
2.
Suction gate valve
3.
Vent plug
4.
Discharge gate valve
Figure 34: Suction supply above the pump
5.10 Prime the pump with an outside supply
This method ensures that the pump will remain primed if the foot valve is tight. If the foot valve fails when
the pump is standing idle, then the pump will lose its prime. During long idle periods, the pump can also
lose its prime through leakage from the stuffing boxes.
1.
Close the discharge gate valve, remove the vent plug, and open the valve in the priming supply line
until all air is expelled and water comes out of the vent openings.
2.
Close the air vents, close the valve in the priming supply line, and start pump.
3.
Open the discharge gate valve.
1
2
3
4
5
1.
From outside supply
2.
Shutoff valve
3.
Vent plug
4.
Discharge gate valve
5.
Foot valve
Figure 35: Prime with an outside supply
5.11 Prime the pump with a separate hand or manually controlled
priming pump
This method ensures that the pump will remain primed if the foot valve is tight. If the foot valve fails when
the pump is standing idle, then the pump will lose its prime. During long idle periods, the pump can also
lose its prime through leakage from the stuffing boxes.
5.10 Prime the pump with an outside supply
3610 i-FRAME API 610 11th Ed/ISO 13709 2nd Ed, API Type BB1 Single-Stage, Axially-Split, Between-Bearing IOM
57
Summary of Contents for 3610 i-FRAME
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