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What would be better (I realize neither solution is ideal). Leaving the line pressurized to keep the water out of the line and the foot valve closed as described above or removing the foot valve and...

Would a bleeder orifice maintain prime when the pump is not in use? Does a bleeder orifice expel the water at a certain minimum pressure?

Secondly, regarding the foot valve don't they close...

I'm trying to find an easier way to drain a winterized water line so I don't need to continually run the heat-line. I have a shallow well jet pump bringing water in from the lake with polyehylene...

Are you suggesting the check valve would most likely fail do the full tank pressure and the vacuum stress on the valve? If it can hold, the only worry is if the vacuum is lost thru air leakage. ...

Presently I have a shallow well jet pump setup to a foot valve where we get water from the lake. For use in the winter there is a heat-line running down the PE tubing to the foot valve. We use the...