A metallic ring joint must only be separated in which way?

A metallic ring joint is designed to create a tight seal, preventing leaks and maintaining the integrity of the piping system. The correct method to separate a metallic ring joint is by applying an axial pull. This is because an axial pull ensures that the ring is pulled straight out of its seating without causing damage to the joint or the surrounding components.

When applying an axial pull, the force is directed along the axis of the ring, which minimizes the risk of bending or distorting the metal. This method aligns with the mechanical properties of the materials involved, ensuring that the separation process maintains the integrity of both the joint and the connected pipes or fittings.

Other methods, such as twisting, lifting, or applying compression, could introduce unnecessary stress or torque on the joint, potentially leading to deformation or misalignment. Such risks could compromise the joint's effectiveness and result in leaks or failures. Therefore, employing an axial pull is essential to appropriately and safely separating a metallic ring joint.