Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Fell apart!

We had an extraordinary bad experience with an Oceanic regulator. We had one on our boat for emergencies and pulled it out one day when a line got wrapped around our prop. The regulator as about 3 years old and had never been used. When I pushed on the plastic purge valve, it fell apart into many little pieces. When we called Oceanic, they informed us that this plastic piece is supposed to be changed frequently during the annual inspection. It has a life of between 2 and 6 years. WTFIT! I have been using scuba equipment for more than 30 years and have never heard of anything like that...avoid this product line.