airlocks gravity fed system

Hi, Can anyone advise as to why the cold water to my bathroom keeps airlocking? This originally happened about 12 months ago and has happened 3-4 times since. It’s an upstairs bathroom, fed from a tank in the attic. The tank is about 8 Meters away and feeds a bath, sink and toilet. The tank...

Conventional system: CW storage in loft, HW copper cylinder in loft below it fed by 22mm pipe that drops vertically (through 22mm gate valve below tank). 22mm pipe drops about an inch below the level of the connection to the cylinder, goes through a 90 degree slow bend and then rises up to the...

Hi all, I have a customer who has been suffering with airlocks on their gravity fed system for some time. Clearing the airlocks has been successful with the usual methods but they keep coming back. Would a Surrey flange help prevent the issue occurring? I suspect a Essex flange maybe better...