Everyone here seems to use McMaster, but I dont much care for their site. I came across Ark-Plas when searching for check valves. I used their sample order to complete the Black Tri-Star.
The downside is ordering from them is literally factory direct, so they dont deal with small orders. You have to order a $50 minimum. But, they do have a large range of products, some of which I've never seen anywhere else (like the re-sizing check valves).
I'll stop before I sound too much like an infomercial.
Just thought I'd gather some opinions.








