Max Head refers to a pump's
capability to push water upwards
(also known as 'vertical lift').
So for example, a pump which states
'Max Head: 7m' means the pump will
be able to push water flow up to 7
metres high from the water surface.
What is often overlooked is that at 7
metres lift, the pump will deliver
zero flow!
High Head Submersible
Effluent Pumps are used
to pump treated effluent or
wastewater from an aerobic
treatment system to a spray
irrigation or sprinkler system,
drip irrigation system, mound
system, or any other high pressure
secondary treatment system.
Discharge head refers to
the vertical distance a
pump must push fluid in
order for the fluid to reach
the system's highest point
above the pump level.
This is one of the factors
that determine the size and
power of your pump.
Incorrect size and power
can severely affect production
and profit.
However, while the
pump head may not be
a physical part of a pump
, it's still a measure of the
pump's power. The greater
the pressure the pump can generate,
the greater the head. Ultimately,
the head is the highest height
a pump can raise fluid against gravity.
You can increase the maximum
head of a submersible pump by
bolting a higher horsepower motor
to the pump. The better motor
choice would be a three phase motor.
A VFD can then be used to drive the
pump and motor above original design
speed thereby increasing the maximum
head of the pump.
The main difference
between an effluent pump
and a sewage pump is that
effluent pumps are meant for
pumping grey water with minimal
solids, preferably smaller than 1/2"
in diameter, whereas sewage pumps
are designed to handle human
waste-solids and sewage materials
up to 2" diameters.
You can differentiate
between the suction and
discharge sides in centrifugal pumps
using the following methods:
Markings: Centrifugal pumps
typically have labels or markings
on their casing indicating "suction"
and "discharge" or "inlet" and "
outlet." These markings help
identify the suction and discharge
sides.
