Selfpriming multistage side channel centrifugal pumps

Description

CMA Pumps are multistage selfpriming centrifugal side channel type, available in horizontal (CMA) and vertical (CMAV) installation. The special open star type impeller, enclosed between the suction and discharge port plates, allow to handling mixtures of gas and clean liquids with high suction lift capabilities. The stages are mounted in series to give proportional higher discharge pressures with constant capacities.
Low operating speed, low vibration and low noise level allow for longer life and maximum reliability with heavy duty design allow for to handle clean liquids, corrosives, hot or cold in all industrial areas. Several materials are available to meet any client specific requirements.

Design

Horizontal and Vertical and installation with rotor between bearings supported, modular construction
with minimum number of components to facilitate assembly and disassembly during maintenance

Features

Casing:

Heavy duty suction and delivery pump casing PN40, radially split type, sealed by gaskets. The suction and discharge casings are directed vertically upwards. The suction casing is usually located on the drive side.

Impeller:

Open, star-shaped impellers, with balancing holes for axial thrust compensation. Can be moved axially
on the shaft.

Heavy duty shaft:

The particularly rigid stainless steel shaft ensures trouble-free operation in all services phases.

Support housing with angular contact bearings for longer life:
The shaft turns on both sides in greased, single-channel grooved ball bearings. These are packed with grease at the factory for 10.000 operating hours.

Seal:

mechanical seal as standard with seal chamber designed in according to ISO. Several solution are available for severe duties with double mechanical seal with quelch or heatings/cooling assembly to ensure correct mechanical seal selection for any specific service and long life.

Spacer coupling:

as standard, flexible type.

Driver frame:

Welded carbon steel, profiled type, torsionally rigid as standard. On vertical pumps the frame is in cast iron with adaptor for standard IEC electric motor

Performance Data

Pump capacity from 0.3 to 70 m/h
Pump Head up to 350 mt
Working temperature from -20°C to +150°C
Working viscosity up to 250 cst
Speed up to 1800 rpm
Gas contents up to 50%
Working Pressure up to 40 bar
Drive power up to 37kW
Flanges from 32 to 100

Main application

Clear or cloudy liquids of all types can be pumped, provided that they contain no abrasives.
The pumps are also used for boosting pressure or for any application, where a self priming pump is necessary or a pump should work trouble free close to the vaporisation point of the liquid.

Services

In shipbuilding: as general service and fire pumps, process water pumps, Boiler feed, pressure systems, self-priming systems.
In all industrial branches: for general supply, domestic, cooling and transfer systems, boiler feed, refrigeration.