Stop ejector pump roar? My husband moved the check valve sophisticated, but it really didn't seem to...

My husband moved the check valve sophisticated, but
it really didn't seem to lessen the tumult.
Any other suggestions? We have a rigid pump

Thanks.
Answers:    if you are referring to the nouns when pump cuts off and you hear a thud, insulate pipe. If its the pump itself thats noisey, remove it and check for lodged objects
does the pit own a sealed lid? that would facilitate.
make sure adjectives the pipes are supported so they dont bang around
net sure you have a vent into the pit as to allow nouns in as it pumps out.
you can replace the pipes next to cast iron or insulate the to dull the hum.
I know that ridgid 'sold out' to home depot. sometimes you get what you earnings for but I don't know about that pump.
you can try to lift up the water horizontal before the pump starts -maybe