good place to get various fittings?

I need to get a bunch of fittings and am looking for a place to get them at good prices. I need 1/2" barbs with 1/2" threads. For a duda diesel plate chiller, blichmann hop rocket, couple of pumps. Going to need some ball valves for the output on the pumps.
Quick disconnects would be nice but I don't want to break the bank.

I looked locally but all i've found so far are in brass. Was hoping for stainless or another suitable material.

Any suggestions?

You might try bargain fittings.

Bargain Fittings, Brewers Hardware, and brewhardware.com.
All three are good vendors (at least have been good for me).
Some overlap in products but also unique stuff to each.
Worth browsing their web sites for ideas.