[Paul Moulding]

There was a leak in my airflex mini slowly from the waste tank. I intended to re cyclicome the gate. Unfortunately when I opened up my machine to do so this popped off is this so.thing I can fix myself as I am the most hopless diy ever.
Thanks

[john martin]

To me it looks like the part of the  gate that screws into the machines blue plastic hole has broken , leaving that bit inside the rim  ... you need to somehow remove that   , and buy a replacement fitting  .   
Like the ones in the link  ... 
https://www.restormate.co.uk/Gate-Valve

https://www.clean-smart.co.uk/store/gate-valve-wt27/

In the mean time ... a rubber or cork bung or something might keep you going

[Lewis Newby]

Happened to me on my pro when it slid out the back of the van. The one on mine was threaded and had a silicone sealant around it. A bit of faffing about and make shift tooling and you should be able to unscrew the remaining part and refit a new one