Universal steel rad hose any good?

So I had my initial firing of the 340 last night in the garage. It was a great start and break in. As the temp nears full operating temp, the lower hose blew off the water pump. One thing I forgot was to leave the cap off and put my no spill funnel on the rad neck. I'm using one of those universal corrugated steel tube rad hose kits that you bend into place and install rubber connectors on each end. My question is, are these universal rad hoses known to be inadequate, or was it due to the burping of air pockets in the system that couldn't escape?