In the vehicle braking system, the handbrake valve is a key component to ensure safe parking and emergency braking of the vehicle. Its performance and reliability are affected by many factors, among which changes in ambient temperature are particularly significant. Therefore, during the installation process of the handbrake valve, it becomes a crucial task to reasonably select its position to cope with temperature changes.

Effect of high temperature environment
In high temperature environments, the performance of the rubber seals, plastic parts and lubricants inside the handbrake valve may be seriously affected. Specifically, rubber seals are prone to expansion under high temperature conditions, which will not only lead to a decrease in sealing performance, but may also cause damage to components due to excessive expansion. Plastic parts can soften when exposed to high temperatures, reducing their strength and durability. In addition, the viscosity of lubricants will decrease in high-temperature environments, resulting in poor lubrication and increased friction and wear between components.
Therefore, the handbrake valve should be installed in a location that avoids direct exposure to high temperatures, such as in the engine compartment or in areas close to the exhaust system. High temperatures in these locations can negatively affect the proper operation of the handbrake valve. The ideal installation location should be selected in a relatively cool and well-ventilated area to effectively reduce the temperature of the environment where the handbrake valve is located and ensure its stable performance.

Effect of low temperature environment
Compared with high temperatures, low temperature environments also have a significant impact on the performance of handbrake valves. Under low temperature conditions, the rubber seals and plastic parts inside the handbrake valve will become harder and more fragile due to the cold shrinkage effect. This change can cause sealing performance to deteriorate, thereby increasing the risk of leakage, while operation may become more difficult due to increased friction between components. In addition, low temperature may also affect the fluidity of the liquid inside the handbrake valve and prolong the braking response time.
Therefore, when selecting the installation location of the handbrake valve, avoid placing it in a low-temperature environment, such as the bottom of the vehicle or an area susceptible to cold air. Low temperatures in these locations can adversely affect the performance of the handbrake valve. The ideal choice would be an area that is relatively warm and easily insulated to reduce the impact of low temperatures on handbrake valve performance.

Effect of temperature fluctuations
Temperature fluctuations are also an important factor affecting the performance of handbrake valves. Frequent temperature changes will intensify the thermal expansion and contraction effects of the internal components of the handbrake valve, resulting in increased component clearance and intensified friction. Not only does this condition affect sealing performance, it may also increase the risk of leakage and cause operational difficulties.
Therefore, when installing the handbrake valve, it is important to choose a location with small temperature changes to reduce the impact of temperature fluctuations on the performance of the handbrake valve. For example, locations in the middle or top of the vehicle typically have less temperature fluctuations, helping to maintain the stability and reliability of the handbrake valve.