If you have one - post it here.
Here's mine.
I have a 500 gallon tank in my barn. ( used for making maple syrup)
This tank is an upright cylinder. There is a tap on the side of the tank which has a shutoff valve - then a 3/4 inch line that runs out the side of the barn, then down to the ground and runs in a buried line 75 feet to the west - then comes back out of the ground up 5 feet to a feedline and shutoff. (At the shed where we boil sap to make syrup) This shutoff valve is more than 10 feet below the level of where the line comes out of the tank.
If I put 100 gallons in the tank - and open both valves - the water ( or sap) DOES NOT FLOW. You can wait for an hour - and it does not flow. If you apply vacuum to the line - you can get it to flow and it will empty the tank.
If you put 250 gallons in and open the valves - it will flow a good stream all on it's own.
How is this possible?
Here's mine.
I have a 500 gallon tank in my barn. ( used for making maple syrup)
This tank is an upright cylinder. There is a tap on the side of the tank which has a shutoff valve - then a 3/4 inch line that runs out the side of the barn, then down to the ground and runs in a buried line 75 feet to the west - then comes back out of the ground up 5 feet to a feedline and shutoff. (At the shed where we boil sap to make syrup) This shutoff valve is more than 10 feet below the level of where the line comes out of the tank.
If I put 100 gallons in the tank - and open both valves - the water ( or sap) DOES NOT FLOW. You can wait for an hour - and it does not flow. If you apply vacuum to the line - you can get it to flow and it will empty the tank.
If you put 250 gallons in and open the valves - it will flow a good stream all on it's own.
How is this possible?