good old air locks again, trawled through the postings and cant find a specific related topic so here goes....
recently drained down the cold water tank so i could change the bathroom taps in our new house (no isolator valves, old plumbing) refilled the tank and have good pressure in basin cold tap but no longer in the bath or toilet cistern, just a trickle from the cold bath tap and nothing from the basin in the ensuite where there was good pressure before. is the most likely problem an airlock?
i believe that the correct tactic is to connect a hose to the main and put it in the outlet in the cold water tank to try to push the air out. there are 4 outlets in the tank, presumably feeding different systems which would explain why i have good pressure in some taps and not in others. so my questions are:
1) is the hose/main technique the correct technique?
2) is there any way to find out which outlet is feeding the airlocked pipework?
3) should i have the taps open during the procedure so the air can get out, or closed so the pressure can build?