Booster Pump Selection

[winesalot]

Hey friends,

Here is my setup: Well pump feeds a 3800-gallon cistern on the high-elevation portion of our property, which is 100' in elevation above our commercial/residential building. The building is fed from the cistern with 2" white pipe, and I get the expected 44 psi at the building. The 2" pvc feed from the cistern is converted to a 1-1/2" Uponor PEX main header that runs the length of the building with tee's supplying all the various water needs.

I would like to boost the building's pressure to 60 psi. We have a commercial hot water dishwasher, and it just barely meets the minimum pressure required. (We Occasionally get a low-pressure error code.) We also find on our wine production crush pad that our garden hoses feel like they have a bit of a weak stream.

It seems logical that I would install a booster where the water comes into the building, where the pipe converts from 2" PVC to 1-1/2" PEX. The pump would only need to increase pressure by 20 psi but would need to meet the potential high-flow needs of a wine-tasting room, wine production space, and a three-bedroom residence.

I'd love to hear your thoughts.

 

[Reach4]

Simpler solution might be to get a pressure switch that works 20 PSI higher than the current one. Then adjust the pressure tank air precharge to match the new higher pressure.

If your current pressure pump cannot supply the higher pressure, you can replace that pump, or if it is a jet pump, you might be able to change the jet stuff to produce higher pressure at lower volume.

 

[Sponsor]

 

[winesalot]

Simpler solution might be to get a pressure switch that works 20 PSI higher than the current one. Then adjust the pressure tank air precharge to match the new higher pressure.

If your current pressure pump cannot supply the higher pressure, you can replace that pump, or if it is a jet pump, you might be able to change the jet stuff to produce higher pressure at lower volume.

I do appreciate you joining the conversation but you might need to read my post a bit closer. The building is supplied by gravity with no pump. The cistern is filled by a well pump, but there is no pump or pressure switch between the cistern and the building.

 

[Reach4]

F&W CJ103051AB 1/2 HP single stage booster looks up to the job.

https://www.zoro.com/flint-walling-...ressure-cj103051ab/i/G8834402/#specifications When it says pressure in the tables, that is the pressure above the input pressure. Use the 5 ft lift row in the table on page 5.

https://flintandwalling.com/wp-content/uploads/sites/2/2024/02/130441-CJ101-CJ103-Instructions.pdf has performance tables. Page 3 has a diagram of a typical installation at the top.

 

[BlackVuehxq]

The most common form

 

[Valveman]

Hey friends,

Here is my setup: Well pump feeds a 3800-gallon cistern on the high-elevation portion of our property, which is 100' in elevation above our commercial/residential building. The building is fed from the cistern with 2" white pipe, and I get the expected 44 psi at the building. The 2" pvc feed from the cistern is converted to a 1-1/2" Uponor PEX main header that runs the length of the building with tee's supplying all the various water needs.

I would like to boost the building's pressure to 60 psi. We have a commercial hot water dishwasher, and it just barely meets the minimum pressure required. (We Occasionally get a low-pressure error code.) We also find on our wine production crush pad that our garden hoses feel like they have a bit of a weak stream.

It seems logical that I would install a booster where the water comes into the building, where the pipe converts from 2" PVC to 1-1/2" PEX. The pump would only need to increase pressure by 20 psi but would need to meet the potential high-flow needs of a wine-tasting room, wine production space, and a three-bedroom residence.

I'd love to hear your thoughts.

Yes, you can easily add a pump to boost the 44 PSI gravity supply to 60 PSI or whatever you want. But we would need to know the flow rate required by the "high flow" demands to size a pump.