Biasi Air Purger Valve. AAV 1002111.
This is used on the Prima 24se and 28se.
Riva 24S and Riva 28S. 24S and 28S.
Ref: 1002111
Biasi Automatic Air Purge Valve.
This is used on the Prava Range. Riva Compact and Plus Range.
Also the Garda Range.
Ref: 1172111
Biasi Auto Air Valve Kit 1/2 1042501
Ref: 1042501