As the innovation leader in lab fixtures, WaterSaver is committed to addressing the needs of its customers. Therefore, in order to enhance the durability of our plastic-lined fixtures, we are pleased to introduce a new diaphragm for these fixtures that is manufactured from solid polytetrauoroethylene (PTFE). The PTFE diaphragm is made with a spring-like shape to easily ex as the valve is opened and closed. The material is both very strong and highly inert. As a result, the new PTFE diaphragms will not be subject to the fatigue that occurs in the older rubber diaphragms.