Here's a pic of the accumulator I just installed. It's made by Shurflow. Cost about $45 another $5 for a faucet pick up line.
Installed it today. No leaks!!!!!
I put some bubble wrap around the hard plastic water line where it comes through the floor. Figured that was part of the pump noise, vibrating against the floor. It sure runs smooth, and a lot quieter. The on and off has been cut back also.
Accumulator is pre charged at 30#. I set it down to 25# they said most efficient if it has 20# between on and off. My pump is suppose to cycle at 25#/45#
Hope it helps.