The Walchem EWC35Y1-VC pump is obsolete and was replaced by the EWC36Y1-VC pump which has a new head and diaphragm design. Both the EWC35Y1-VC and the EWC36Y1-VC have the same specifications of 6.7 GPH, 30 PSI, dig/ana input, PVC/CE/FKM, 1/2" OD, 115 VAC. Many of the liquid end parts are also interchangeable between the two generations.
