Using a torch wrench helps prevent what issue during assembly?

Using a torque wrench during assembly is essential for ensuring that components are tightened to the manufacturer's specified torque. This is particularly important for connecting and union nuts, as applying the correct amount of torque prevents rounding of corners. When nuts are not tightened properly, either too loose or too tight, it can result in damage to the fasteners, leading to performance issues and potential leaks.

By utilizing a torque wrench, the assembly process is standardized, reducing the risk of human error and ensuring that all components fit together securely without deforming nuts or compromising their integrity. This practice not only prolongs the lifespan of the assembly but also maintains safe operational conditions.