Eccentric reducers have a changing centreline for the bore, with one side remaining parallel. Eccentric reducers are used at the suction side of pumps to ensure air does not accumulate in the pipe. The gradual accumulation of air in a concentric reducer could result in a large bubble forming that could eventually cause the pump to stall or cause cavitation when drawn into the pump, with the flat side in the upper position this is avoided. Also eccentric reducers can be useful with the flat side down to allow for the complete draining of pipelines and preventing the pooling of liquid which can happen with concentric reducers in horizontal piping.
The dimensions below are to suit DIN 2848 dimensions with DIN EN1092-1 PN10 / PN16 flanges.
|To suit DN||Face to Face A||Offset B|
|Large Bore||Small Bore||mm||mm|