BOSS PRESSURE GAUGE.

[dipthong]

Can't check pressure on Boss pressure valve (big round red thing) because there is no gauge attached. Thanks

 

[ShaunCorbs]

There won’t be a pressure guage on the expansion vessel can I ask why you need one ?

 

[dipthong]

We drained the system and were told we would need to re-pressurise it. Thanks

 

[ShaunCorbs]

There will be a filling loop somewhere eg silver flexi with one or two valves either end