Hi,
I have a check valve installed between the pump and suction line. That being said, I am not able to blow air to winterize my main drain with an air lock since the check valve would stop any flow in that direction.
In this case, how do I winterize my main drain?
Thank you.
I have a check valve installed between the pump and suction line. That being said, I am not able to blow air to winterize my main drain with an air lock since the check valve would stop any flow in that direction.
In this case, how do I winterize my main drain?
Thank you.