Pressure certainly does increase in a water line going down hill. This is because the weight of the water pulls it.
Hot or cold?
The pressure will slightly increase.
Pressure increases because as you go further down, more water is above you being pulled down by gravity.
Going farther up into air, pressure decreases. Going down, pressure increases. When you think about it, more air is pressing down on you when you are standing on earth because more is on top of you. When you are up in the air, there isn't as much air pressing on you which shows that there isn't as much pressure. The same concept applies when under water; The farther you go under, more water is pressing on you than when you are more towards the surface which=more pressure (underwater).
water pressure goes down because the force of the water going through the space decreases
Pressure increases as you go down.
If the stopper has an airtight seal, the pressure in the bottle will increase, with the same amount of air and water confined to a smaller area.
When you are going up, air pressure goes down, when you go down, such as under water, air pressure goes up, causing your ears to pop!
When you add a teaspoon of honey to water with vapor pressure, it will reduce the vapor pressure. The sugar in the honey leads to the pressure going down.
This depends how you are perceiving this "pressure going up and down" . I've repaired and replaced toilets for years and couldn't imagine how I'd gauge pressure doing this. Maybe you are mistaking pressure for flow rate and something is plugged up somewhere in your toilet.
yes. loosen the locking nut, adjust the screw / bolt down to increase psi, out to decrease psi.
Sounds like your main line coming in is small if it's 1/2 inch stepping it up to 3/4 coming in then down to 1/2 inch would increase your pressure