Storage Tanks and Submersible Pump

[Andrew@CarmelCA]

I have two connected 2500 storage tanks fed by my 700ft deep well.
I am looking to replace the old booster pump and pressure tanks which are all failing after the old well flooded the system with a huge amount of sediment.
I am thinking about putting a submersible in one of the tanks connected to a PK1A and a 10 gal tank, using a 50/70. Will the Hallmark 1HP 33g 207 (https://www.ebay.com/itm/293991310138) be sufficient to push the water 300ft using the 1-1/2" pvc pipe up to my house 45feet above the tanks?

Andrew

[Cary Austin]

With 45' elevation you will lose 20 PSI before water gets to the house.  Starting with a 50/70 pressure switch and a CSV set at 60 PSI, you will still have a constant 40 PSI at the house.  That pump builds a max head of 207' or 90 PSI, which will work fine with the 50/70 switch setting.

[Andrew@CarmelCA]

Great info, thank you. I would like to get 50PSI in the house as that's what everyone is used to. Any thoughts on a similar submersible to the Hallmark that would deliver that?

[Cary Austin]

To get 50 PSI at the top of the 45' lift you will need the CSV set to deliver 70 PSI.  You will need the 10 gallon tank and a heavy duty pressure switch set for 60/80.  That pump can build 90, so it will work with the pressure switch set up to 60/80, but no higher.

[Andrew@CarmelCA]

Cary, that's great news. I took a look at their 2HP version which does 400ft/173PSI https://www.ebay.com/itm/293598504891. Do you think that might be a safer better bet since we have a second floor to reach? Would the larger motor make a big difference to my electric cost, we are currently at 32c per Kw here in the golden state! Andrew

[Cary Austin]

That 2HP would be fine if you were pumping from a well that is 150' deep.  But it is too much pressure for a cistern pump.  The 60/80 and constant 70 should be more than you need and will still give 40 PSI on the upper floor.  The 1HP is a cheap pump if you decide it is not doing the job you can replace it and turn up the pressure on the CSV1A and heavy duty pressure switch.  But I think you would still want a 1HP, but a 15-16 GPM version that can build more pressure than that 33 GPM pump end.

[Andrew@CarmelCA]

Cary, thank you so much for all the advice, really appreciate it. I see that they make a https://www.amazon.com/Hallmark-Industries-MA0460X-9A-S-Shell-Stainless/dp/B07CCR91BQ/ 1hp, 240' Head, 25 GPM version, looks like that will be the one for me then, gives a little more head room.
Will get this and the PK1A and a 10 gal tank ordered and go for the heavy duty switch with 60/80. Will upload some pictures once it is all up and running.
Many thanks, Andrew

[Cary Austin]

That will work.  Let me know if I can help.  Thanks