Diaphragm valves

Diaphragm valves are suitable for dosing low to medium viscosity media in beads right through to microlitre-sized dots. A short opening stroke provides extremely fast closing. A knurled-head screw for adjusting the valve stroke facilitates fine adjustment of the dosing quantity.

The diaphragm valve is the functional principle requiring the least clearance volume. With other principles, some media can be deposited in the valve body, leading to the risk of cross contamination, i.e. two media coming into contact with one another. The diaphragm is the only part that comes into contact with the medium, as all mechanical components are outside of the wetted area. These valves are therefore used with anaerobic adhesives, for example, to prevent contact with metal valve components.

The pneumatically controlled diaphragm valve is also suitable for increased cycles.