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Doc. ISM0076_MANUALE_CN SEAL-MV_ENG_REV04.DOCX
5.
PUMP DESCRIPTION
CN SEAL-MV pump series is designed to meets the rigorous requirements of ISO 13709/API 610, eleven edition.
A wide range of pump configurations and hydraulic coverage available.
Vertical design ensure space-saving and suitability for cryogenic, high temperature and high working pressure
services. ISO 21049/API 682 Seal Chamber accommodates a wide variety of seal configurations for the most
severe services. A complement of ISO 13709/API 610 seal flush plans is available.
Cartridge Seal Mounting assures ease of maintenance and precise seal face setting for maximum seal life
Back Pull-Out of rotating assembly for OH3 models simplifies maintenance as neither the motor nor piping
connections are disturbed.
Motor Support Head is a heavy-duty design with a registered fit motor mount. Generous size open compartments
allow easy access to all bolting and removal of the complete pumping assembly, including mechanical seal,
without removal of casing.
Dynamically Balanced Impeller limits vibration and assures smooth operation over wide flow range.
Renewable Wear Rings for both the casing and impeller reduce replacement cost secured by axial screws, with
option for tack welding, back wear ring standard and rear rings and balance holes eliminated for high suction
pressure applications.
Stiff Shaft Design limits maximum deflection at seal faces to 0.05 mm(0.002 in) maximum for a long life of the
pump.
5.1. Applications
Generally this model is ideal for clean liquids slightly contaminated, without particles that can be magnetized;
The maximum working pressure of the plant, the allowable temperature and the maximum rotation speed
depends on the type of pump and it is specified in the "TECHNICAL DATA" paragraph.
Other uses are not allowed as the conditions of use stated in the “TECHNICAL DATA” paragraph must be
respected in full. Using the pump in a plant or in liquid conditions different from those for which the pump was
designed, can lead to dangerous situations to the user.
5.2. Technical Data
The pump described in this manual has the following characteristics:
CN SEAL-MV
Nozzle: ANSI B 16.5 - 300lbs or DIN PN 40 flanged, other on request;
Max viscosity: 200 cps (standard);
Max system pressure:
40 bar (standard, CN SEAL-MV); higher pressure rating available, please refer
to pump datasheet;
Flow up to
1800 mc/h;
Head up to 155 m;
Working temperature up to +350 °C;
Installed motor power: from 1,5 kW to 500 kW;
Speed: up to 3500 rpm (up to 6x4x13, superior sizes up to 1750 giri/min );
Weight (pump only): from 55 to 1800 kg;
Electric Motor characteristics:
Supply frequency: 50 Hz
Supply frequency: 60 Hz
2 poles
2900 rpm
3500 rpm
4 poles
1450 rpm
1750 rpm
6 poles
980 rpm
1150 rpm
CAUTION
CAUTION: If the pump is driven by inverter, remain within the recommended limits
of rotation