In firing up my (new to me) Pavoni Pub, steam started coming at the top of the glass level. Can someone tell me if this is by design, as a safety feature, or if there is a loose connection or gasket that needs to be replaced? I'm assuming that if it is a safety feature, I need to adjust the pressurestat?

Thanks

Hi, judging by this pic, its an early model Pub, which has the vac breaker in the top sight glass fitting. Its normal for this to emit a bit of steam as it comes up to pressure, but it should seal off and not leak once it gets up to pressure (around 1 - 1.3 bar)