On 07/10/2020 16:01, Jimk wrote:
Any top tips to avoid draining down a hw cylinder in order to
change a tap washer?

something that I can bung in/over the seat & reduce losses whilst
I fart with the jumper?

Or ought else?

TIA


Just turn off the cold water feed into the HW tank - hot water is drawn
off from the top. Open the tap in question to run off a small amount of
water (if any), replace washer.