Sump pump continuously cycling

[chillydk147]

Hello, I've noticed my sump pump cycles on and off, it'll pump water them stop, the water returns which triggers the pump again. I've very limited knowledge of Septic Tanks but on research I've discovered that the Check Valve may be an issue. To give some background, I recently purchased this property but have no idea what if any maintenance has been done on the tank, also I don't even know if a check valve exists, I've attached a photo, can anyone tell me if a check valve is visible? Any help would be greatly appreciated.

 

[Geofd]

When you say the water returns, do you mean it pumps then drains back from what was just pumped or do you mean the tank keeps filling?????? If you don't have a snake or don't know how to use one you could also use a drain balloon,or just the hose to verify flow

 

[chillydk147]

Hi Geofd, it drains back what it just pumped, see attached video

 

[Geofd]

I'm guessing under that 90° is the check valve I would just replace that and while you have it apart snake the drain so you know it's clear

 

[chillydk147]

Thank Geofd, just to clarify, I've circled in red what I believe you're referring to as the check valve, see attached. The house is about 15 years old and I don't believe this was ever changed, is it normal to see this level of corrosion on a check valve?

 

[BlueSkyHigh]

My check valve is 20 years old and is as clean as a whistle. That level of corrosion or calcification is indicative of a leak IMHO. I can't tell, but is that metal or plastic?

 

[FishScreener]

And I’d probably put in some kind of air venting at the top of that loop. With the check valve bad that assembly could siphon back everything it just discharged.