The Walchem EWB30F2-VC pump is obsolete and was replaced by the EWB31F2-VC pump which has a new head and diaphragm design. Both the EWB30F2-VC and the EWB31F2-VC have the same specifications of 3.3 GPH, 30 PSI, digital input, PVC/CE/FKM, 1/2" OD, 230 VAC. Many of the liquid end parts are also interchangeable between the two generations.
