Npt fittings - where to buy odd ones?

[Canon Fodder]

I'm having complete brain failure on this one, what industry uses 1/8th npt fittings? After somewhere that sells things like tees to attach two hoses to one output etc.

 

[Tom]

Don't use items with the same fitting but different specifications due to it being designed for a different industry

If you can't find goods in the uk Palmers Pursuit Shop do every fitting you can get