VLT
Vertical Process Pump
31 V1.090418
5. PIPING AND ALIGNMENT
These units are furnished for a specific service condition. Any change in the
hydraulic system may affect the pump performance adversely.
The connection of the piping must be carried out with utmost care; otherwise,
the pumping medium can escape during operation, which can seriously
endanger the operating personnel.
Do not start the piping and alignment procedures until grouting, preliminary
alignment (as seen in the previous sections of this manual) and on site welding
have been performed.
In a new installation, great care should be taken to prevent dirt, scale, welding
beads, and other items from entering the pump. The suction system should be
thoroughly flushed before installing the suction strainer and suction piping.
Discharge piping should be of ample size and be installed in direct runs with
minimum bends.
Suction and discharge piping configurations should be in accordance with the
Hydraulic Institute Standards.
Suction and discharge pipings, fittings, and valves must be adequately
supported and anchored close to the pump flanges to eliminate strains
imposed on the discharge head, prevent excessive nozzle loads, maintain
pump/driver alignment, and avoid pipe-induced vibration.
A drain pipe must be provided to drain any fluid that may accumulate on the
driver support structure. The nominal pipe size must be 1 inch or larger, with a
visible open end.
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