When I open my valve there is no steam coming out of the tube.

This can have various causes. The most common one is the most easy to resolve:

·         Blocked steam stem. This is caused by not proper cleaning the steam tube. At some point the milk will block the steam holes of the steam tube. This can be resolved by removing the steam stem and cleaning it properly. In most cases this resolves the issue.

·         Damaged valve component. It is possible that a valve component inside the steam valve makes it impossible to open the valve. Only disassembly and a rebuild will resolve this issue.

·         Blockage of the feed steam tube. This is the most uncommon one, but it does happen. Is that the tube coming from the boiler to the valve gets blocked with scale. Cleaning and descaling can resolve this issue.