A Compression Spring is a type of mechanical spring that is used in the transmission unit. It is used to provide tension and compression between the piston and valve and ensures that the valve closes properly after it has been opened by the camshaft. The Spring is compressed when the valve is opened, and when the camshaft releases the valve, the spring expands and pushes the valve back into its closed position.Attributes:• Provide resilience and elasticity to absorb shocks and vibrations• Direction of the coils right hand with total coils 21.5 and Active coils 19.5• Withstand working stress up to 73.67 Kg/mm²Applications:A Compression Spring is used in the transmission unit to ensure that the valve remains securely in place, even when subjected to high pressures or vibrations.