Hi I just instaleed a Ridgid Ejector Pump in my basement. The last time about 3 years ago I had a plumber do the job. We have 2 valves on the 2" pipe one about 8 feet off the floor and another about 18" off the top of the pit. We always had a noise when the pump finishes and the check valve closed. I never paid attention before upon the check valve closing we have the same noise, the pipe also moves a bit a little up snd down movement. Is this normal a nonice do it yourselfer.