Lamar
New Member
I am experiencing water pressure in the piping at my drilled well of 90-100 psi. I have a new 36 gal diaphragm pressure tank at the well for extra storage for use with livestock watering and small amount of landscape watering. I fear the amount of pressure is going to rupture the diaphragm of the new tank. I hooked it up but after seeing the high pressure, I installed a ball valve and now have it temporarily off line until I get this figured out. There is a 75 psi pressure relief valve "adjusted" by pump installer to accommodate the 100 psi
Here's what I've got.
Well- 280' depth with 20-25 gpm. 6" casing drilled 30 years ago
New pump installed 3 years ago. 1 1/2 hp, 20 gpm set at 160' with 1 1/4" sch 120 pvc, 10-3 w/gnd
30 year old WelXtrol WX252 86 gal pressure tank in basement of house. New A.O. Smith 36 gal pressure tank in masonry well house. (This just replaced a 10 year old one due to diaphragm gone bad and leaking)
240 ft of 1" pvc from well to house. House tank is approx 12' higher than well.
Pressure switch is at house tank and is 40/60.
Here are my current cut on/cut off pressures.
At well using a hose bib gauge. Cuts on at 92 psi, off at 98 psi. (approx same reading when I had the pressure tank with gauge hooked up) Pump runs 64 seconds with no water running.
At house using gauge on line at pressure switch. Cuts on at 40, off at 60. Matches hose bib gauge approx 5 ft from pressure switch gauge.
So my questions are.
Is the 98 psi at the well to be expected? Can the Sched 40 and joints within the well house handle the pressure?
What's causing the apparent pressure drop between the well and house.
Is it advisable/safe to hook the 36 gal A.O. Smith tank back up? I see that it has a 100 psi max operating pressure.
If not, what are my options. The well house is an unheated masonry structure and is of a size that could house an 86 gal tank plus the 36. If you suggest I consider this, what would be involved relative to electrical and piping. Pressure switch size?
Will greatly appreciate your help.
Thanks,
Lamar in Athens, Georgia
Here's what I've got.
Well- 280' depth with 20-25 gpm. 6" casing drilled 30 years ago
New pump installed 3 years ago. 1 1/2 hp, 20 gpm set at 160' with 1 1/4" sch 120 pvc, 10-3 w/gnd
30 year old WelXtrol WX252 86 gal pressure tank in basement of house. New A.O. Smith 36 gal pressure tank in masonry well house. (This just replaced a 10 year old one due to diaphragm gone bad and leaking)
240 ft of 1" pvc from well to house. House tank is approx 12' higher than well.
Pressure switch is at house tank and is 40/60.
Here are my current cut on/cut off pressures.
At well using a hose bib gauge. Cuts on at 92 psi, off at 98 psi. (approx same reading when I had the pressure tank with gauge hooked up) Pump runs 64 seconds with no water running.
At house using gauge on line at pressure switch. Cuts on at 40, off at 60. Matches hose bib gauge approx 5 ft from pressure switch gauge.
So my questions are.
Is the 98 psi at the well to be expected? Can the Sched 40 and joints within the well house handle the pressure?
What's causing the apparent pressure drop between the well and house.
Is it advisable/safe to hook the 36 gal A.O. Smith tank back up? I see that it has a 100 psi max operating pressure.
If not, what are my options. The well house is an unheated masonry structure and is of a size that could house an 86 gal tank plus the 36. If you suggest I consider this, what would be involved relative to electrical and piping. Pressure switch size?
Will greatly appreciate your help.
Thanks,
Lamar in Athens, Georgia