This new bi-metal vacuum breaker was introduced by to replace the older L193 with hopes that they would last longer.

This fits the Micra, Mini, Linea, Linea Classic. GB5, PB, KB90, and Strada. 

For older Mini's, GS3's and Strada's, you remove the boiler fitting and pipe that connects to the older L193 and thread this Vacuum breaker directly into the boiler. 

Retail Price is $107.00