The E46VET HEAD ASSEMBLY is a Walchem metering pump repair part designed for use with the EHE46 model. It is a replacement head assembly specifically designed for the EHE46 model with VET valve material. The head assembly contains the valve and diaphragm components of the pump and is critical to the overall operation and performance of the metering pump. This part is necessary to maintain the accuracy and consistency of chemical feed rates in various water treatment applications.