What did you do with your Range Rover today

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Depends on your gauge, 0=1 bar; 0 psi actual is a vacuum. So your water pressure is maybe 4 psi + 16 psi. Sounds daft but i know what I mean! An oil gauge on one of my buses sits at 16 psi when disconnected as it's reading atmospheric pressure.
 
Depends on your gauge, 0=1 bar; 0 psi actual is a vacuum. So your water pressure is maybe 4 psi + 16 psi. Sounds daft but i know what I mean! An oil gauge on one of my buses sits at 16 psi when disconnected as it's reading atmospheric pressure.
You really are confusing yourself. ATM is 14.9 psi.
Gauges are set at 0 at ATM so it’s all a pressure above and equal on both sides so that doesn’t matter. :vb-confused2:.

J
 
You really are confusing yourself. ATM is 14.9 psi.
Gauges are set at 0 at ATM so it’s all a pressure above and equal on both sides so that doesn’t matter. :vb-confused2:.

J
Yes, you're right, it's just that some gauges I have aren't set a zero ATM! I know 1 bar is about 16, so near enough fr a guess.

One of the posts above says water pressure is 16 psi, that's quite high for a car engine. Some modern buses run at that pressure.
 
Yes, you're right, it's just that some gauges I have aren't set a zero ATM! I know 1 bar is about 16, so near enough fr a guess.

One of the posts above says water pressure is 16 psi, that's quite high for a car engine. Some modern buses run at that pressure.
What we're saying is a standard 1atmosphere is 14.5psi. not 16, which is 1.1bar
100 metres above sea level would be 14.51psi so not a readable difference on a 'garage' gauge. Weather makes the pressure go up and down, but again nothing to worry about in this scenario.
Depending on the guage it will be zeroed at 1bar or show 1 bar if its going to be used where you might be reading a vacuum eg air-conditioning
 
Yes, you're right, it's just that some gauges I have aren't set a zero ATM! I know 1 bar is about 16, so near enough fr a guess.

One of the posts above says water pressure is 16 psi, that's quite high for a car engine. Some modern buses run at that pressure.

Again you are confusing things. 1 bar is 14.5psi and is not the same as 1ATM.
I cant think what use a gauge not starting at zero would be 🤔

Yes I would agree that @GRRR may have an issue.

J
 
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