OT...Adhesive/glue for plastic, Wagner paint sprayer Options

[Porschef]

So the tool abusers have handed off another patient, a Wagner 91460s
(does that count as Porsche topic? (IMG:style_emoticons/default/rolleyes.gif) )...anyway, I opened it up to find that the pressure switch housing has broken, thus not allowing the unit to shut off, and build too much pressure. I think that may have affected the prime valve, but that's not for certain.

Anyway, has anyone got a solid suggestion for an (unknown) plastic glue? The back of the adjustment stem does get captured in the rear housing, so I think that takes most of the stress.

I've got epoxy, model glue, JB Weld kicking around but I'd like to get a one and some thing going.

TIA,

Joe

[Valy]

Here is an example of something similar. The left was the same as the right bump before it broke. It is constantly under load as there is a spring and button on the other side.
In this case I couldn't stitch it due to the size. I did make a wire crown around it to help stabilize everything and then built the crown up with superglue and baking soda. It looks a bit messy since it is vertical surface and the glue kept leaking down but the repair is pretty hidden so I painted it black and don't care much about aesthetics there.