On Sat, 26 Jan 2019 19:36:14 +0000, ss wrote:

Re previous post:
Ok having looked at it more carefully I have managed to seperate the 2
parts (also better images below) It is off a Kirby vacuum shampoo water
tank, it is an on/off `valve`
My thoughts are to insert a couple of pins (dovetail layout) to support
whatever epoxy will stick to the plastic and fill the void at the bottom
left hand image.
There is no reason to have to disassemble this part later on so a
permanent fix I am hoping for.

Any further thoughts welcome?

https://imgur.com/a/IlPyXtY

Yes I already deduced what it was from your inadequate photos and zero
description, and looked for a purchasable replacement part without
success. You now have to post photos of the hidden faces of the parts
if you want proper advice. Why is the knob bottom left in your new
photo different from the one top right, and has lugs but no ramps?
What does a lug look like from the side?
--
Dave W