I'm trying to change a rad valve without draining the system.
I've tried using a Drayton easy drain bung, sealing the header tank and back fill pipe, turning the opposite end rad valve off, and CH turned off, but when I open the valve in question water just flows fast.
I would appreciate any advise
I've tried using a Drayton easy drain bung, sealing the header tank and back fill pipe, turning the opposite end rad valve off, and CH turned off, but when I open the valve in question water just flows fast.
I would appreciate any advise