I went to lowes today to get parts to hook up to my ball vavle that I bought from my lhbs. I want to pick up a reducer to put a tube on so after looking at about 100 parts that wouldn't fit I found a nylon hose barb that was perffict fit. It's lead free. Is this ok to use as a one time only part. I have parts coming to me but I was hoping they'd be in by now. Also bought danco o-rings #15. Are they safe to use? The kettle ball vavle i bought didn't have one for the inside and I understand why but I am putting this into my 5 gallon igloo cooler.