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 pipe probably 75psi.
Could I put a pressure relief valve close to the foot valve where the water doesn't freeze and then pressurize the line (30-40psi dependent on the valve) with a compressor?
There is a 10 ft drop in elevation which according to my math results in a 4-5 psi at the foot valve. If I attach a compressor and pressurize the line, could I evacuate the water in the line thru the pressure relief valve? Once the water is evacuated, I'd remove the pressure and the valve should close and there is no way for the water to re-enter the line.
Could I use a hot water heater pressure valve or something similar? Would the foot valve survive 30-40 psi?
Thank for any input
Could I put a pressure relief valve close to the foot valve where the water doesn't freeze and then pressurize the line (30-40psi dependent on the valve) with a compressor?
There is a 10 ft drop in elevation which according to my math results in a 4-5 psi at the foot valve. If I attach a compressor and pressurize the line, could I evacuate the water in the line thru the pressure relief valve? Once the water is evacuated, I'd remove the pressure and the valve should close and there is no way for the water to re-enter the line.
Could I use a hot water heater pressure valve or something similar? Would the foot valve survive 30-40 psi?
Thank for any input