Pump bowl
assembly
column pipe
Suction nozzle
Basket suction strainer
(alternate conical
strainer)
Pump water level at 150% of rated
pump capacity
Drawdown
Static water level before pumping
Minimum
submergence
(refer catlogue)
VERTICAL HOLLOW
SHAFT MOTOR
ELECTRIC FIRE PUMP
Fig. No.
18
15 of 10
Subject to change without prior notice
INSTALLATION OPERATION AND MAINTENANCE INSTRUCTIONS
VERTICAL TURBINE PUMP - NVT SERIES
Ref. No. NVT-IOM/2020/V.01
5.9. Delivery Piping
Ensure that bolt grouting or chemical anchors are allowed to dry thoroughly before connecting any pipe work.
Note that fire pump sets have regulatory requirements for piping and these must be strictly observed. Refer to the
appropriate standard for details. (See Fig. No.
19).
The discharge piping should be supported independently and close to the pump so that no strain is transmitted to
the pump when the flange bolts are tightened. Use pipe hangers or other supports at intervals necessary to provide
supports closest to the pump discharge head.
The distance between the bottom of the strainer and the bottom of the tank should be at least one-half of the pump bowl
diameter but not less than
12
in (
305
mm). The distance between pump center line and tank wall should be more than the
diameter of bowl. Distance between the center lines of two pumps installed adjacently should be more than four times the
diameter of the bowl of the pump with largest bowl size.
