Milk Clean Return Valve.
A new updated valve is now available.We recommend changing this valve at next service.
We also recommend changing this valve regularly once a year.
If this valve leaks you will see milk is “sputtering” when dispensed, also you will see milk
temperature increasing. If the valve is not working correct, it will typically take in some air, which
can be seen as bubbles in the milk tube going to, and from, the milk pump.
We also highly recommend updating the milk pump system to the below-pictured configuration for a simpler and “cleaner” looking configuration.