According to Nick Hull :
In article ,
(wahzoo) wrote:

Does it really matter at what height the pressure switch is mounted?

Mount it at any height. The higher the height, the higher the pressure,
1/2 pound/ft

True enough. On the other hand, given that the tubing to these things
isn't the toughest thing on the planet, excessive height is just adding
to the risk of rupture (or plugging up).

Besides, if there's a gauge on it, I want the gauge to measure the
true pressure, not be offset by some amount.

A screwdriver is a better way to adjust pressure.
--
Chris Lewis, Una confibula non set est
It's not just anyone who gets a Starship Cruiser class named after them.