The Walchem EWC30F1-VE pump is obsolete and was replaced by the EWN-C31VEUR pump which has a new head and diaphragm design and more I/O and, therefore, offers greater flexibility. Both the EWC30F1-VE and the EWN-C31VEUR have the same specifications of 4.3 GPH, 50 PSI, digital input, PVC/CE/EPDM, 1/2" OD, 115 VAC.