The Expansion Tank Bonnet provides a protective cover for the expansion tank, which is responsible for compensating for the volumetric changes in the fluid as it undergoes temperature fluctuations. As the fluid within the system heats up, it expands, and during cooling, it contracts. The expansion tank, with the assistance of the bonnet, allows for this expansion and contraction without causing undue stress on the system components. The bonnet is often equipped with features like a pressure relief valve to maintain optimal pressure levels within the system, safeguarding it against potential damage.Attributes:• Pressure relief to prevent over-pressurization.• Temperature resistance to withstand a range of temperatures.• Impact resistance for resistance to impacts and sudden forces.Applications: The Expansion Tank Bonnet is used in the expansion tank to ensure the reliability and longevity of the entire fluid system by protecting the expansion tank's internal mechanisms.