New tap for downstairs loo, though working ok the chrome had failed. Also the mixer cartridge is getting a little stiffer.
The trap beneath was looking tired, but I'd not realised how bad the pop up waste part of the assembly was. This is how it "undid" Top section was still in the basin!
In contrast, despite looking awful, the very crusty mono block tap securing stud and nut actually unscrewed fine! Consistently stiff all the way off (to the extent I thought it was just spinning for a time!) Pretty sure I will have copper greased this when installed, to testament to doing that I'd say
Quick before and after: Before, then: An anti vac trap (as the old one originally used to glug if running water fast or emptying half a basin full out)
Old trap was knackered and full of the horrible usual stinking slop that lives in drainage systems.
The pipework has been pulled upwards but hopefully it'll suffice.
Silicone drying (the basin was very, very cheap - a second or more accurately probably a reject! The hole in which the waste sits is roughly round but nowhere near flat! Trap sits on opposing edges with visible gaps 90° round from each. So fairly hefty silicone gap filling needed. I did manage to blob enough on that the original items never leaked, so fingers crossed I can repeat that success!
New plug hole is a push "click clack" type. The lever behind the mixer tap seems to get falling out of fashion.