I’m looking at getting a short run of sight gauge glass to go from my O2 injection, to ball valve, to fermentor. This is the sight glass I’m looking at. What fittings do I need to buy to go from the O2 (which is stainless steel, 1/2" FPT) to the sight glass and back to a stainless ball valve?
And I don’t wanna spend the $120 on the one they have on their site.
Seems you could use some stainless compression fittings. It might work better with a section of polycarbonate. Compression fittings can be pricey.