Who makes the most accurate PSI gauge ?
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sarg
Well-Known Member
Then you really want an air pressure gauge to check the tank pressure at the schrader valve............ which is checked with the pressure tank empty of water & set around two psi lower than the switch start.
Hello sarg and thank you for your reply. I have a very accurate tire pressure gauge that I used to make sure the tank was 38lbs when empty. I question the original water pressure gauge because of my brand new 40-60 pressure switch. When the pump kicks on, the water pressure gauge says 38lbs and not 40. Unless I am missing something, the gauge needs to be replaced. Not ?
sarg
Well-Known Member
I doubt the gauges are totally accurate and if your current one does not show signs of age ... meaning any rust or water inside the glass .... I would leave it alone. ( You could replace it and find the pressure switch is set a couple psi low from the 40 )
The switch can be adjusted but I've learned the hard way it is not worth messing with ..... be warned you could adjust the "large" spring to raise both the start & stop pressure BUT I will never adjust the small spring again ...... once it gets out of whack I just replaced the switch.
So..... Two options .... Drop the air pressure to 36 in the pressure tank ..... or use a 3/8 nut driver and adjust the large spring clockwise a half turn at a time to raise the range so it starts at 40.
( I would do option 1 ) Many YouTube videos on making the adjustments.
(Understand I am unusual in that I service our electric heater & pressure tank every six months and have replacement switches .. elements ... water pressure gauges ... thermostats ... anodes ... and ¼" pipe nipples on hand "just in case".) I have two wells ... one at the house with a 30/50 switch and one at the workshop with a 40/60 switch. The switches are the same .. just adjusted differently at the factory.
The switch can be adjusted but I've learned the hard way it is not worth messing with ..... be warned you could adjust the "large" spring to raise both the start & stop pressure BUT I will never adjust the small spring again ...... once it gets out of whack I just replaced the switch.
So..... Two options .... Drop the air pressure to 36 in the pressure tank ..... or use a 3/8 nut driver and adjust the large spring clockwise a half turn at a time to raise the range so it starts at 40.
( I would do option 1 ) Many YouTube videos on making the adjustments.
(Understand I am unusual in that I service our electric heater & pressure tank every six months and have replacement switches .. elements ... water pressure gauges ... thermostats ... anodes ... and ¼" pipe nipples on hand "just in case".) I have two wells ... one at the house with a 30/50 switch and one at the workshop with a 40/60 switch. The switches are the same .. just adjusted differently at the factory.
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Autometer 2167. Very accurate if you really want it:
https://www.amazon.com/Auto-Meter-2...3&sprefix=tire+pressure+gauge,aps,111&sr=8-18
https://www.amazon.com/Auto-Meter-2...3&sprefix=tire+pressure+gauge,aps,111&sr=8-18
sarg
Well-Known Member
The OP wants a recommendation for a "water" pressure gauge.
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My bad. I hear or see Schrader valve and I think air. Still, this is a good one for air.
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