Have full bath in basment with ejector pump. (1)Plumber did not install a check valve. Is check valve a Code requirement? (2) After @15 uses ejector pump does not work. Is not having check valve reason to not work? If not, any thoughts about other reasons for pump to not work?

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Originally Posted by ;

Plumber did not install a check valve.

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A check valve's necessary to prevent everything left in the discharge line to come flooding back into your pit, (see image)

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After @15 uses ejector pump does not work. Is not having check valve reason to not work? If not, any thoughts about other reasons for pump to not work?

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No but the extra load caused by the missing check valve could cause the motor to heat up and through out the overload.
Have a check valve installed and see if that doesn't help. Good luck, Tom

Hi guys...

If the plumber missed the check valve then my guess is that he can't be a real plumber... all plumbers know you need the check valve!

Since he missed that he may also have missed the need to drill an air bleeder hole in the standpipe in the pit... see Tom's image above. This hole is needed to prevent air lock... may be why the system failed after only 15 uses.

I'd call this plumber(?) back and have him fix/check all of this. His gasketing/seal work should also be checked. If the gaskets/seals were not done right then sewer gasses will get into your home and that is a huge health hazard! I usually use a clear SILICONE caulk around the rim, the bolt heads and all around the pipes as aback up to preventing sewer gasses down the road.

Any more questions... let us know.

Mark

I absolutely agree with Mark...

My guess: What you probably have now is pipe full of sewage. Water column is pushing on the blades of the pump preventing it from spinning.