Matco-Norca’s new ISO 9001:2008 manufactured HAV steam air valves come in various patterns and sizes and are for use with hydronic radiators and steam boiler systems. The valves have a maximum operating pressure range from 1 1/2” psi to up to 6 psi.
Matco-Norca steam air valves
![Matco-Norca steam air valves](http://www.supplyht.com/ext/resources/Default_Images/sht1215_Products_MatcoNorca.jpg?1451315730)