Design of ST Micro valves is based on the historical free ball system, updated with the aim to eliminate what users were complaining.

1.  We decided to remove the platen and weld it to the body’s valve in order to avoid any leakage from the circuit outside of the valve.
2. The free ball gets a new design and it has been also welded to the platen, the closing hole also get a new shape in order to be used several times without parts change.