Why is sufficient margin width required on valve margins?

Sufficient margin width on valve margins is important to prevent burning and warping of the valve. When a valve is subjected to high temperatures and pressures during operation, the margins help maintain the integrity of the valve by providing enough material to absorb heat and resist deformation. If the margin is too narrow, it can lead to localized overheating, which can cause the valve to warp or burn, compromising its functionality and efficiency. A well-designed margin width ensures that the valve can withstand the thermal stresses it encounters within the engine, contributing to the overall reliability and durability of the equipment.

While the other choices touch upon different aspects of valve functionality, they do not directly address the critical role that margin width plays in ensuring the valve remains well-formed and operational under extreme conditions.