The Walchem EWC20Y1-VE pump is obsolete and was replaced by the EWC21Y1-VE pump which has a new head and diaphragm design. Both the EWC20Y1-VE and the EWC21Y1-VE have the same specifications of 2.3 GPH, 105 PSI, dig/ana input, PVC/CE/EPDM, 3/8" OD, 115 VAC. Many of the liquid end parts are also interchangeable between the two generations.
