I am attempting to install a dishwasher (first time) and having problems with the compression fitting. I was referred to use plastic tubing, as opposed to the conventional copper tubing. The problem is that both ends have a slow drip.

When I bought the dishwasher (used), it didn't have the male elbow installed, so I bought one at the hardware store and it came with the compression fitting. I am not over-tightening and I am pretty sure I installed the elbow correctly with teflon tape. I am not using teflon tape on the compression fitting, however.

After my first unsuccessful attempt, I tried to replace the male elbow and compression fitting with the exact same result.

Should I be using copper tubing instead, or does it matter for this application?

I am really scratching my head on this one, and open to all suggestions.

Thanks in advance for your help.

steve4611

I didn't get around reading these messages until this morning. The good news is that I successfully made the connections last night using the copper inserts. That will at least get us operational, and result in a decline in the amount of times my wife will roll her eyes.

The funny thing is I was at Sears Hardware orginally to replace the older copper with new, after a tear in the line when I pulled the old unit out of position. Just so happened an retired pipe fitter was working and suggested the plastic option (didn't say a word about the brass insert). Due to my ignorance on the subject, it seemed like a great option at the time.

I will replace the plastic with the brass line like I should've done in the first place. Thanks guys for your input on this. First time user to this site and giving you all positive ratings for your much-needed assistance. Good Day!

mygirlsdad77

Aw, the old plumber pipe fitter in the checkout line routine. Seems like they always want to give advice. Fact is, if they really knew what they were talking about, they would just stand there, not say anything, and laugh to themselves.

Glad you got the job done(and made the wife happy, thats what really matters in the end anyway). I would still suggest the stainless steel braided hose if you decide to replace plastic.