My house was built in 2001
I notice my rad valves have a drain in the body of them and unclear if the drain off is connected to the rad side or system side.
e.g If it was to shut off both rad valves and open the drain, would that drain the rad or the system?
I notice my rad valves have a drain in the body of them and unclear if the drain off is connected to the rad side or system side.
e.g If it was to shut off both rad valves and open the drain, would that drain the rad or the system?
