A Compression Spring is used in the brake valve to provide to open and close the valve It is placed between the two parts, with one end of the spring resting against the cover and the other end resting against the retainer. When the cover is placed onto the retainer, the spring is compressed, creating a constant force that holds the two parts securely together.Attributes:• Oil finish can help to protect the Spring from corrosion• Provides a constant force over a wide range of deflections• Provided With Right-hand wound helical coil helps to maintain their shape and stability• Provided with active coils of 6Applications:A Compression Spring is used to maintain a constant force between the parts in the brake valve to ensure proper and smooth operation.