I replaced my coolant circulation pump a couple of years ago when the ring on the connector broke off inside the hose. I removed that little ring and was able to re-clamp the hose onto it to get me to the delivery and last a couple of weeks until I could get home to replace it.
By the way, if you ever want to evacuate
all of the engine coolant in the fastest possible time, start the engine and pop the hose off the circulation pump.