The Walchem EWB10Y1-PE pump is obsolete and was replaced by the EWB11Y1-PE pump which has a new head and diaphragm design. Both the EWB10Y1-PE and the EWB11Y1-PE have the same specifications of 0.6 GPH, 150 PSI, dig/ana input, PP/CE/EPDM, 3/8" OD, 115 VAC. Many of the liquid end parts are also interchangeable between the two generations.
