FEATURES
role in the design and installation of the
equipment. “Standard engineering practices
are applied with our designs ensuring that
we have spare capacity within our systems
should there be unforeseen failure. This
ensures ease of maintenance and eliminates
unnecessary down time in operation,”
says Dobson.
“All parties need to understand the reason
why the specific equipment was specified and
that an alternative replacement may affect
the reliability and efficiency of the system and
therefore deliver a lower life cycle cost,”
he says.
Pumping equipment in commercial buildings
is a valuable and critical asset, says Dobson:
“With Grundfos’s iSolutions technology it
is possible to monitor our equipment and
ensure regularly scheduled maintenance
to prevent breakdowns. Our systems are
also capable to be connected to modern
building management systems through
several protocol languages. Grundfos has
also established an extensive network of
distributors, dealer and service partners that
are ready to support your Grundfos products
on site. We are just waiting for your call.”
SPECIALITY PUMPS FOR BOTH
COMMERCIAL AND RESIDENTIAL
Strong demand for high efficiency vertical
pumps has prompted global pump
manufacturer, KSB Pumps and Valves,
to manufacture a comprehensive range
of-advanced vertical turbine pumps for
a wide range of applications. The new
‘B-Pumps’ are multistage vertical turbine
pumps with a submerged hydraulic system
comprising strong and efficient discharge
casing assemblies, column pipes and pump
bowls in the assembly. Depending on the
size and application required the new range
is available in 17 sizes with three different
impeller types.
KSB regional sales manager for sub-Sahara
Africa, David Jones, says the pump sets
cover heads of up to 200m and flow rates of
up to 720ℓ/second with anything from one
to 25 stages. Stage casing diameters range
from 15.24cm to 61cm with various designs
allowing above-floor or underfloor discharge.
B-Pumps can be driven by vertically mounted
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47
electric motors or via a right-angle gear with
a horizontal diesel engine or electric motor.
The maximum permissible speed is 3500 RPM.
A wide range of materials can be specified
including standard grey cast iron and steel
derivatives or special material including
stainless steel, duplex and super duplex
stainless steel or customised materials.
Internally the pumps have intermediate
pump shaft bearings which are lubricated by
the fluid handled, or may be fitted with an
external lubrication supply.
Externally, the casing is designed for a
pressure of 16 bar; the discharge flange
dimensions are compliant with DIN, BS and
ASME standards. On request pressure ratings
above 16 bar can also be supplied. The
maximum temperature of the fluid handled
should not exceed 105°C.
Commercial buildings not only use pumps
for water boosting, there are many more
applications such as:
• Fire pumps for fire prevention
• HVAC – Heating Venting and
Air Conditioning – inline and
circulator pumps
• Wastewater transport
– solid handling pumps
• Stormwater dewatering
– drainage pumps
Each of these applications has specific design
parameters and Grundfos Sales Engineers
are capable of assisting with specifying the
correct products and offering what they call
an “envelope” (all in one) pumping solution.
For residences, you can never have too
many bathrooms – and for most people it
is the plumbing that is the challenge. Home
renovators can, however, install an extra
toilet in a basement, or convert a garage or
similar space where there is no plumbing
with a Saniflo system. Justin Frank, Saniflo
national sales manager, explains that using
Saniflo pumps, you don’t have to incur the
construction expense of cutting concrete or
walls, digging trenches or ripping up paving.
The company's macerator pumps and grey
water pumps discharge waste into a septic
or city sewer system, “thereby moving away
from the challenges of traditional plumbing.
July 2019 Volume 25 I Number 5