The Walchem EWC20F1-VCM pump is obsolete and was replaced by the EWC21F1-VCM pump which has a new head and diaphragm design. Both the EWC20F1-VCM and the EWC21F1-VCM have the same specifications of 2.3 GPH, 105 PSI, digital input, PVC/CE/FKM, w/MFV, 3/8" OD, 115 VAC. Many of the liquid end parts are also interchangeable between the two generations.
