Diaphragm Valve

A Diaphragm Valve is a specialized linear motion valve used to start, regulate, and stop fluid flow. It is unique because it uses a flexible membrane (the diaphragm) to seal the valve, which completely isolates the operating mechanism from the fluid.
Because the liquid never touches the metal stem or bonnet, this valve is the #1 choice for corrosive chemicals, acids, and abrasive slurries. It is also widely used in the Pharmaceutical and Food industries (Sanitary type) because it has no pockets to trap bacteria and is easy to clean.