Diaphragm type valves are used for handling materials with varying viscosities from low to high, including those that are abrasive or prone to chemical reactions in air. These valves are easy to maintain, with flexible diaphragms sealing the liquid passage and isolating it from the drive section, allowing only the valve head and diaphragm to come into contact with the material. The material passage is also easy to clean. (Inner Diameter: 2-8mm)