The 3B23, 4B23, and 4BKR series of media separated solenoid valves are designed to create a contamination barrier and to control the flow of ultra pure or corrosive materials. These valves are perfect for medical device applications that require media separation such as dialysis machines, instrument cleaning devices, and dental irrigation equipment. In these direct acting, two-way, two-position dry operator valves, the media is isolated from the working components of the valve. The material remains untainted by the metals in the operator and at the same time, the moving parts of the valve are protected from the effects of particulates and aggressive chemicals. A rolling diaphragm won’t allow chemicals to gather or dead spots to form which might hinder flow.