Gravity((:
It is balanced by radiation pressure, and gas pressure.
1. balanced pressure
In the case of a star (that is not actually going nova or supernova) they are balanced.
When air pressure acts equally on an object from all directions, it results in balanced forces that cancel each other out. This balanced pressure is what allows objects to maintain their shape and not be crushed by the surrounding air pressure.
balanced pressure
In a balanced-port valve, the pressure acting on the upstream side of the diaphragm is balanced by the pressure acting on the downstream side. This balance eliminates the effect of liquid pressure on the opening force of the valve, as the forces cancel each other out. The valve remains stable and the opening force is not affected by changes in the liquid pressure.
When the pressure of nitrogen is balanced between the air and your body, you are at a state of equilibrium. This means that the pressure of nitrogen inside your body is equal to the pressure of nitrogen in the surroundings, creating a balance that prevents any further pressure buildup or release.
The internal water pressure in plants is countered by the cell wall. This is called turgor pressure.
A balanced diet and regular exercise can reduce high blood pressure.
The pressure is balanced but not blank. There is still pressure on both side doing on to the wall.
Maybe pressure balancer going bad or you don't have a pressure balanced valve
Pressure can be balanced with temperature. if you increase pressure u can actually change the state of a substance by changing temperatures. the state at low temp and high pressure is solid, med temp = liquid, and high temp = g... at low pressure and medium temp the state would be gas... thus there is a relationship between the two. you should look at phase change diagrams.