Affetti Giuseppe & C. s.n.c.

Solidity and reliability 

The CGD pump range, centrifugal horizontal normalized to DIN 24256, ISO 2858, NFE 44-121, has been designed in order to face strong applications. Easy to handle, the pumps of this range are strong, produced in their components with high thickness to give a product with the maximum reliability. The electrical motor is connected to the pump through elastic coupling with spacer, and fixed on a carbon steel base plate. Suitable to transfer acid and basics solutions, the parts in contact with the liquid are build from a solid plastic (PP-PVDF-PEHD-PVC-PTFE-Graphite)or graphite block and the gaskets present are in the right material (EPDM-FPM).
Primary label mechanical seals combinations are installed (internal, external and double flushed) with like standard version the solution with silicon carbide faces (Sic-Sic) and bellows (FPM-EPDM). The impellers installed are generally semi-open, but they are available in the closed version for hot liquids and without solids in suspension. 
 
 


Exercise temperatures and materials

MATERIALS SELECTION 
The materials used in the production of our pumps, are carefully selected based upon the pumped liquids. Each material used must answer at mechanical and chemical characteristics in order to grant the best reliability of the pump. The working temperature is a really important condition, especially because the thermoplastics are materials very sensible to low and high temperatures.  



Performances

PUMPS SELECTION 
Pumps are selected based on the data transmitted from the Customer. Capacity Q, head H, specific gravity and liquid viscosity,temperature, N.P.S.H. available in the plant are required in order to proceed to the correct pump choice. The choosed pump have to work close to the best efficency point of the curve in order to obtain a reduced energy consumption and to avoid abnormal hydrodynamic situations (cavitations,turbulences, etc.)



CURVES

RPM 2900 50Hz

RPM 1450 50Hz

RPM 3450 60Hz

RPM 1750 60Hz