yes there is a flare and there is a perfectly good piston in it please read the first one where it states that I did take the piston out and flushed the entire system out with nitrogen. I checked everything and after changing the txv indoor one due to a check valve it still did not work..... No check valve on it...... but now it has me going crazy, cap tubes or rev valve ..... what the hell I have never ran into something like this it has me stumped and I usually dont get stumped on much....