Adding above-ground tank for storage. System plans ok? Can I reroute jet pump suction line as illustrated?

[nogolowflow]

Spring water is currently captured in a ~50 gallon below ground concrete cistern (beneath pictured manhole cover). Due to a low replenishment rate, I need to add an above-ground storage tank. I opted for a small diaphragm pump (Delavan 5850-114e) as the transfer pump, which is rated safe for potable water. I will plumb in a pre-filter before the cistern to protect the diaphragm pump, and then plumb the diaphragm pump to transfer water between the shallow well and a 600 gal storage tank. I will control the diaphragm pump with floats -- one in the cistern and one in the storage tank. I plan to replumb the suction line of the existing jet pump (Wayne Shallow Well Jet Pump), which currently services my house, to draw from the new storage tank. I will add a float in the storage tank as low level protection for the jet jump.

1) Are there any concerns with this plan?

2)The jet pump will be located beneath the top of the storage tank, which is 70" tall. The white outline in the illustration roughly represents the storage tank. Can I reroute the jet pump suction line as illustrated? Would there be any concerns with friction loss, head feet, the 90 deg. turns, the up and down routing, etc.?

 

[RetiredInGueydan]

Spring water is currently captured in a ~50 gallon below ground concrete cistern (beneath pictured manhole cover). Due to a low replenishment rate, I need to add an above-ground storage tank. I opted for a small diaphragm pump (Delavan 5850-114e) as the transfer pump, which is rated safe for potable water. I will plumb in a pre-filter before the cistern to protect the diaphragm pump, and then plumb the diaphragm pump to transfer water between the shallow well and a 600 gal storage tank. I will control the diaphragm pump with floats -- one in the cistern and one in the storage tank. I plan to replumb the suction line of the existing jet pump (Wayne Shallow Well Jet Pump), which currently services my house, to draw from the new storage tank. I will add a float in the storage tank as low level protection for the jet jump.

1) Are there any concerns with this plan?

2)The jet pump will be located beneath the top of the storage tank, which is 70" tall. The white outline in the illustration roughly represents the storage tank. Can I reroute the jet pump suction line as illustrated? Would there be any concerns with friction loss, head feet, the 90 deg. turns, the up and down routing, etc.?

The jet pump intake must be the highest point in the system.

 

[Sponsor]

 

[nogolowflow]

The jet pump intake must be the highest point in the system.

Thank you. Could I mount the jet pump above the above-ground tank, and then route the discharge pipe back down to the pressure tank?

 

[nogolowflow]

Thank you. Could I mount the jet pump above the above-ground tank, and then route the discharge pipe back down to the pressure tank?

Alternatively, could I run a suction line downwardly to the bottom of the above-ground tank, entering it horizontally at the base via a bulkhead or equivalent?

 

[RetiredInGueydan]

Alternatively, could I run a suction line downwardly to the bottom of the above-ground tank, entering it horizontally at the base via a bulkhead or equivalent?

I should have said that the pump intake must be higher than any part the suction line, sloping upwards to the pump.

 

[RetiredInGueydan]

Thank you. Could I mount the jet pump above the above-ground tank, and then route the discharge pipe back down to the pressure tank?

I think this would have less chance for leaks as compared to a fitting on the bottom of tank. A drop pipe and foot valve in the tank would be simple to plumb.

 

[Reach4]

The jet pump intake must be the highest point in the system.

I have not read that before.

 

[Valveman]

Yes. The pump needs to be the highest part of the suction line A drop pipe and foot valve works good as long as you don't go over the top of the storage tank and back down leaving a high spot in the suction line.