VERTICAL CENTRIFUGAL PUMPS

The IM series of resin-encased vertical centrifugal pumps features high-performance pumps for fixed installations with pump immersed directly in the tank and operated by a direct-drive electric motor (max 3000 rpm) for fast fluid drainage with flow rates ranging from 6 to 75 m3/hour and head up to 38 m.
The special design of this type of pump avoids the use of internal mechanical seals (subject to heavy wear) and ensures that any accidental spillages are collected in the tank.
The open impeller allows continuous pumping even with very dirty liquids having apparent viscosity of up to 500 cps (at 20°C) and small suspended solids.
The choice of pump construction materials allows selection of optimum chemical compatibility with the fluid and/or environment without neglecting the temperature range.

 

Main features

- Construction materials: PP, PVDF;

- Pump immersed in the tank;

- Motor removable even with pump installed;

- Weldless;

- Usable even with extremely dirty liquids;

- High flow rates: from 6 to 75 m3/hour;

- Motor replaceable without dismantling pump;

- User-friendly bushing replacement;

- Quick and easy maintenance;

- Fully-removable;

- Also available without motor.

 

Description of the pump

Debem resin-encased vertical centrifugal pumps consist of a solid pump casing and a column fitted to the baseplate supporting the lantern that in turn supports the electric motor. The direct-drive motor is connected by a flexible coupling on the pump shaft. The open impeller is fitted to the other end of the shaft that is supported by a radial bearing. This pump’s special design allows the motor to be stripped without the need to disconnect the pump from the system. A = electric motor B = drive coupling C = lantern D = radial bearing E = outer column F = shaft sleeve G = ceramic bushing H = impeller I = delivery duct L = intake duct M = bushing

How it works

The impeller is integral with the shaft and direct-drive electric motor and is rotated at a preset speed with the centrifugal effect producing suction on the intake side and discharge on the delivery side.

Installation IM vertical centrifugal pumps should only be installed with the shaft positioned vertically and the pump immersed in the tank. Suitable devices should be fitted to avoid dry running and/or the formation of a vortex and possible air suction. These pumps should only operate WHILST FILLED; running dry or with air bubbles can cause damage to the internal bushing.

 

Chemical compatibility

The type of liquid, temperature and working environment are factors to be considered when deciding on the best choice of construction materials for the pump and its correct chemical compatibility. The table below gives some examples of the most commonly-used substances:

chemical compatibility chart >>>