The flow switch locking collar has aged on the boiler and wont tighten up securely, So I've had to shut the system down. 
Does anyone know what part number is needed as the Potterton web site doesn't list one only a referal name.
the likely cost to replace it and a supplier would be appreciated.
Thanks in advance
Does anyone know what part number is needed as the Potterton web site doesn't list one only a referal name.
the likely cost to replace it and a supplier would be appreciated.
Thanks in advance
