| Standard
pump with tri-lobe rotors manufactured entirely
in AISI 316 stainless steel, mounted on
a cast iron bearing frame with epoxy paint
protective coating. Pre-assembled double
tapered roller bearings, high precision
timing gears with timing device. Oil lubricated
and device for axial shaft adjustment. A
chamber providing separation between rotor
case and bearing frame, enables the fitting
of balanced-compact-reversible type mechanical
seals.
ST VERSION: Standard tri-lobe rotors
SM VERSION: Tri-lobe with increased tolerances
for heavy high-temperature duty.
HP VERSION: For pressure up to 20 bar
PR VERSION: Rotors and lobes in anti-seizure
alloy with minimal clearances (improved
volumetric efficiency
and dosing duty).
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ASEPTIC
PUMP
All the standard models can also be constructed
in aseptic version with sterile vapour or
liquid barrier on the end cover, shaft seals
and suction/discharge ports. This pump is
essential in packaging food or pharmaceutical
sterilized products and must under no circumstances
be contaminated by bacteria or micro-organisms
during transfer. |
|
PUMP
WITH ENLARGED SUCTION INLET
The models B200 ¨C B330 ¨C B430 can also
be supplied with a rotor case machined from
a single casting having an enlarged rectangular
suction port to facilitate the suction of
highly viscous products, semi-solid pastes
or mixtures containing semi-solid pieces.
In these cases the pump is generally positioned
with the ports on a vertical axis to facilitate
entry of the product under gravity. |
 |
PUMP WITH
JACKETED ROTOR CASE
All sizes of pumps in ¡°B¡± Series can be
supplied with the rotor case (and on request
also the end cover) fitted with a jacket
for the circulation of heating or cooling
liquids when the pumped fluid is to be maintained
at a constant temperature inside the pump.
Typical examples are fats, butter and margarine,
chocolate and glucose. |
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FLUSHED
SEALS
The mechanical seals in pumps used to transfer
products that tend to crystallize or leave
solid deposits can be flushed constantly
with flow of free-draining water or a compatible
liquid. Flushing is obtained fitting a seal
box (having its own UM/LIP seal) around
the mechanical seal |
 |
ROTORS
Depending on the type of use the rotors
can be made as: standard stainless steel
tri-lobes, stainless steel bi-lobes, action
dual wing rotary piston, gears for models
B100 and B105. The stainless steel tri-lobe
rotors (5 lobes for B100 and B105) and stainless
steel bi-lobes can all be covered with rubber
in different compositions. The rotors are
interchangeable and should they need to
be replaced it is possible to assemble the
same type or different types of rotors,
irrespective of their shape or the clearances.
After replacing the lobes it will be necessary
to control or reset the final tolerances. |
 |
MATERIALS
OF CONSTRUCTION
All shafts are manufactured from AISI 316
or Duplex sheet stainless steel. The rotors
are manufactured from either high quality
AISI 316L extruded shaped bar or in special
stainless steel anti-seizure alloy (Acteon).
The pump body is also manufactured from
AISI 316 stainless steel and except for
the B100 pump type, which is made from a
sheet all other pumps are made from the
lost wax casting method. It is possible
to have certificates of all raw materials
for traceability purposes. |
