Piusi V100, Instructions For Installation, Use And Maintenance Manual

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Translated from Italian
with diameters that are equal to or larger than those recommended, reducing bends to a minimum, and
using filters with a large cross-section and foot valves with minimum possible resistance on the suction side.
It is very important to keep the suction filters clean because, when they become clogged, they increase the
resistance of the system.
The vertical distance between the pump and the fluid must be kept as short as possible,
and it must fall within the 2m maximum required for priming. If the distance is greater, a foot
valve must be installed to allow the suction pipes to fill up and the diameter pipes must be
larger.
ATTENTION If the suction tank is higher than the pump, an anti-siphon valve should
be installed to prevent accidental diesel fuel leaks. Size the installation
to contain the back pressures caused by water hammering.
ATTENTION It is a good system practice to install vacuum and air pressure gauges right
at the inlets and outlets of the pump, which allow verification that opera-
ting conditions are within anticipated limits. To prevent the suction pipes
from being emptied when the pump stops, a foot valve should be installed.