[strath44]

I've got a very similar one, actually I used about 3 in a few months!

They will still spray fluid out without the nozzle, albeit not as well.

If you are getting no fluid it is blocked - soaking in solvent will clear (but can damage it, wouldn't worry about that on this though).

If you get fluid and a poor spray pattern then you'll need to find the nozzle.

Even the budget manufacturers can be reasonable if you need to order one. Personally I'd not waste time buy a new one!

These are a nightmare to clean you really need to put the pick up tube in a tub of solvent / thinners and spray till its clear out the exit end!