The Walchem EWB20Y2-VC pump is obsolete and was replaced by the EWN-B21VC2Y pump which has a new head and diaphragm design and more I/O and, therefore, offers greater flexibility. Both the EWB20Y2-VC and the EWN-B21VC2Y have the same specifications of 1.8 GPH, 60 PSI, dig/ana input, PVC/CE/FKM, 3/8" OD, 230 VAC.
