I had a sump pump installed. Approximately a year later, after the pump runs, there is a loud gurgling noise accompanied by vibration from the pipes. During high water seasons, this leads to a constant and annoying gurgling sound.
The sump pump line goes (relatively) straight up ~8'. The check valve is located ~4' above the pump. Once the line hits the ceiling it runs horizontally ~15' then turns right 90 degrees, drops 6" to get under the beams, runs horizontally another 6' and then descends at ~45 degrees another 2' to where it turns left and exits through the foundation.
The gurgling seems to occur in the descent to the exit point through the foundation (based on sound and feeling the gurgles in the pipe). It doesn't seem that this would be due to a failing check valve because of it's young age and that the noise doesn't seem to originate near the valve (unless it's losing a necessary vacuum).
How can I reduce this noise?