Considering the Functions of Radiator cap at a Glance

Looking at simple structure and cheap price, sometimes we underestimate the role of the radiator cap. In fact this is one important component in vehicle engine cooling system. Substantially, the function of this tool is to close the hole filling of water radiator (coolant). However, if investigated further, he had another role which is not less important, namely to maintain fluid pressure through the engine cooling system circulating water flowing arrangements to and from the reservoir tube.

Considering the Functions of Radiator cap at a Glance

Indeed, the water will boil when the temperature reaches 100 degrees Celsius at a pressure of 1 atmosphere. To prevent that the pressure in the radiator is raised beyond the surrounding air pressure so that the boiling point of water increases at higher temperatures.

The point is to anticipate failure or imperfection of the cooling system functions. So when the water temperature passes 100 degrees Celsius indirect boil. In this case the radiator cap to function as a regulator of the pressure inside the radiator and engine cooling systems space.

In addition to the radiator cap has a seal to prevent liquid coolant out, there are also two valves for high pressure and low pressure vacuum valve which has an important function. High pressure valve serves as a pressure regulator. Coolant pressure due to excess heat will drive the engine valve spring so that the coolant is coming out into the reservoir tube.

When the coolant to cool down properly when the engine is off or detached kalornya by radiator fins will occur in a vacuum tube because the pressure in the radiator the radiator is lower than the surrounding air pressure. As a result of low pressure open valve that keeps water from the reservoir tube is sucked back into the radiator.

This process takes place repeatedly which makes pressure and volume of water in the radiator is always awake to the stable.

Well after knowing its function then you should immediately replace the radiator cap after detected leak that resulted in no damage. We recommend that you do not ever try to 'outsmart' the prop or adding rubber radiator cap when it started to leak.

Vehicle owners are encouraged to observe and maintain the water level in the reservoir tube and is not advisable to frequently open the radiator cap, especially in European cars.