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Vertical Glandless Pump
designed and manufactured
to meet industry's highest standards
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Glandless Centrifugal Pumps
The Kestner range of Centrifugal Pumps combine advanced hydraulic
design with a history of handling corrosive and erosive liquids at
all temperatures throughout a multitude of industries.
Designed with maximum life and minimum maintenance in mind, the range
offers a unique Vertical Glandless Pump along with sealed Horizontal versions,
both long and close coupled.
Use of our own specialised plastics and metals throughout the range, together
with conventional Ferrous, Non-Ferrous alloys and Thermoplastics removes the
headache of handling difficult liquids. Kestner pumps are fitted with arduous
duty driving motors as standard equipment with uprated machines as an optional extra.
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Advantages |
No Mechanical Seal
Runs dry indefinitely
Handles abrasive & corrosive fluids/slurries
Handles 'difficult' liquids
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Maintenance time kept to a minimum
Reduced down time
Vertical mounting saves floor space
Pumps in use since 1930
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Available in virtually any material
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Vertical Glandless Pump
The pump is similar in hydraulic design to any conventional
pump. It is always installed in the vertical position and the
design is such that the need for any form of mechanical seal or
packed gland is eliminated by allowing a controlled leakage of
the liquid being pumped to return to the suction tank by way
of an overflow connection in the upper body of the pump.
The ability of Kestner glandless pumps to run completely
dry without ill effect is used with advantage in applications
requiring the continuous transfer of corrosive liquids, with
a high degree of reliability.
The most important gains to be derived from the use of
glandless pumps are in the sphere of maintenance and the
consequent reduction in down-time production losses.
Normal maintenance on the Kestner glandless pump is
confined to lubrication of the driving motor bearings. |
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The majority of applications for which the pump is used
involve continuous circulation, for example gas scrubbers
and heat exchanger circulating pumps. It is also well suited
to applications such as filter press feed pumps where the
controlled 'leakage' acts as an integral bypass which allows
for release of back pressure from the filter.
The most widely used method of installing a Glandless Pump is shown
above.The pump is installed beside the tank and positioned so that the
pump impeller is flooded at normal maximum liquid level in the vessel.
When the pump is started up it will deliver liquid until the suction pipe
becomes uncovered when it can be allowed to run dry until the liquid
level is restored to the point where repriming can take place.
This cycle of operation may be repeated indefinitely.
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Section of Kestner Glandless Pump |
(1)Suction
(2)Delivery
(3)Overflow
(4)Impeller
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(5)Lower Casing
(6)Upper Casing
(7)Upper Body
(8)Thrower
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Materials of Construction
 | 'Keeplus'
A compression moulded glass reinforced thermosetting plastic using vinyl ester and polyester resins having excellent chemical resistance at temperatures up to 105°C.
| 'Keebush'
A glass filled Furane resin thermosetting plastic with chemical resistance extending up to 150°C.
| 'Tantiron'
a 15% high silicon iron alloy with total chemical resistance to corrosive and erosive liquids at elevated temperatures.
| Cast Iron
High quality casting to BS1452 all grades.
| Stainless Steel
Grades 304 and 316 to BS3100.
| Ni-Hard
Various grades to BS4844.
| High Chromium Iron
12-28% Chromium to BS4844.
| Thermoplastics
PVDF has excellent mechanical and chemical resistance across a wide rage of temperatures and concentrations. Also u.P.V.C and polypropylene,
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