I am a legal gun owner, and before I shoot this hose splitter, I thought I'd ask for advice. See attached picture, where the leak is coming from the bottom of the blue tightening nut. It took me about 3 tries to get it right on the top part, but I'm getting nowhere with this leak. The junction of the 2 hose connections is designed to freely swivel, so there's no tightening that can be done there. Is this just a defective product and I need to make a third trip to Lowes? FYI there is a flat washer at bottom of that blue nut. This is my 2nd splitter; I returned the first one (different brand) because the shut-offs didn't work. Any ideas?
ETA: is this just the nature of these Lowes/Home Depot products, and should I just go to a plumbing supply store?
ETA: is this just the nature of these Lowes/Home Depot products, and should I just go to a plumbing supply store?