High speed valve

[jsluck]

Hi,

I have the attached on my car. I had to take this apart to remove some hose, but I'm not sure if I can refit it with new hose? It seems to be a pressure fitting, but no idea how to refit, as it does not seem to simply click into place. Was it meant to reuse a new clip every time?
I realise to no longer make this part, so worst case, what part would I need to replace this with?

Thanks,

John