The ultra pure 2/2-way diaphragm valve GEMÜ C67 HPW CleanStar is manually operated. All media wetted parts are produced from PFA or PTFE (HPW version). In the HPS version, there is a choice of PP-R, natural or PVDF for the valve body. A seal adjuster (not with AG 4) and an optical position indicator are integrated as standard. This High Purity version of the CleanStar series complies with the strictest purity standards and boasts high chemical resistance. It can also be used with high media temperatures. As such, it is often used at the supply and distribution level in semiconductor factories.