58 / 60
PRODUCT News
56
MODERN MINING
October 2016
Index to advertisers
Allied Crane Hire
9
Barloworld Equipment
OFC
Beowolf Mining
13
Booyco Electronics
50
DCD
11
Donaldson
54
DRA Projects
28-29
Joest SA
49
Joy Global Africa
52
Komatsu South Africa
46
Lafarge
IBC
Maelgwyn Mineral Services Africa
17
Mining Indaba
32
MMD Mineral Sizing Africa
55
MSA
36
Mynbou Rigs Africa t/a Belaz Africa
53
New Concept Mining
OBC
Novamine
43
Novatek
14
PANalytical
30
Powerbit Rocktools
51
Sandvik Mining Systems
IFC
Scania South Africa
8
Simantel (Caterpillar)
2
Simantel (Caterpillar)
20
Transcor Truck Hire
45
Vital Engineering
39
Winder Controls
31
WorleyParsons
15
Cost-effective load sensing valve introduced
Hydraulics & AutomationWarehouse (HAW)
recently introduced the SALAMI VDP08 load
sensing valve to the hydraulic industry. The
valve is said to be ideal for a wide range
of applications, mainly in the mobile field,
where independent flow control of actua-
tors is needed without being affected by
load variations.
The valve is claimed to offer a more cost-
effective solution than competitor products
and is easily retrofitted without having to
change mounting specifications. The valve
canbeused inapplications up to130 litres/min
and amaximumworking pressure of 350 bar.
“This sectional directional control valve
type has become popular in the indus-
try owing to the simplicity of the design,
high tolerance and the ability to function
under extreme operating conditions and its
excellent controllability,” explains Wynand
Kellerman, General Manager, HAW. “In addi-
tion, the many control positioning options
available to the operator eliminate the need
to add auxiliary components and additional
pipe connections.”
Other benefits of the valve include its
modular design. “In the case of a malfunc-
tioning valve section, this design feature
means that only the faulty section needs to
be replaced, and this can be done on site
without having to remove the entire valve,”
Kellerman continues.
The VDP08 load sensing valve can be
ordered for use with both variable and fixed
displacement pump applications.
Hydraulic & AutomationWarehouse, tel (+27 11) 281-3800
There is a marked move in the Southern
African mining sector towards install-
ing OEM pumps. This is according to
Colin Adams, MD of Integrated Pump
Technology, who says that this recent
change in the market has turned the pre-
vious trend of sourcing cheaper replicated
pumps on its head.
“It is always tempting in difficult eco-
nomic times to purchase lower cost capital
equipment without doing a full assess-
ment of the actual owning and operating
costs which should include aspects such
as performance, reliability and aftermarket
support,” Adams says.
“Any short term cost saving will rapidly
fade into insignificance if the pump does
not meet its hydraulic performance and
this situation will be exacerbated if an infe-
rior component fails, causing catastrophic
damage,” he continues.
The high cost of unplanned downtime
due to a pump installation that fails can
impact directly on the productivity of an
operation, and therefore on its profitabil-
ity, says Adams.
“And this is a scenario that we have
seen often over the last few years where
end users have purchased pumping
equipment that is not engineered to
End users increasingly opting for OEM pumps
Grindex pumps have a proven track record in dewatering.
cope with the harsh African operating
conditions,” he continues.
Integrated Pump Technology was
established as the official Southern African
distributor for the Grindex range of elec-
trical submersible pumps, and later the
company added the Italian manufactured
Faggiolati pump brand to its product
portfolio. Both are Original Equipment
Manufacturer (OEM) pump brands and, as
such, have strong legacies when it comes
to product research and development.
Product development is essential as
this includes the incorporation of the lat-
est hydraulic technologies and materials
of construction to ensure that pumps will
meet operational requirements. This is
something that maintenance personnel on
mines are fully cognisant of and this knowl-
edge needs to be transferred to buyers and
management whomay not always consider
the performance and reliability approach
when making the purchasing decision.
An example of technology being lever-
aged in Grindex pumps is the unique air
valve that has been integrated into the
dewatering pump range. This allows the
impeller to pass air instead of water past
the motor in a dry run condition.
Another feature in the dewatering
range which ensures optimal operational
performance is the patented SMART motor
protector which provides thermal overload,
phase loss and phase rotation protection.
The Grindex sludge range has all the
advantages of the dewatering range cou-
pled with a recessed vortex impeller and
split hydraulics with replaceable rubber
linings. This makes these pumps capable
of greater solids handling with increased
abrasion resistance.
Integrated Pump Technology, tel (+27 11) 918-9034