Which equipment would be classified as non-life support but potentially hazardous to divers?

The classification of certain equipment as non-life support yet potentially hazardous to divers hinges on the nature and function of the equipment. Explosive valves, while not directly life supportive in the sense that they do not provide critical life functions like buoyancy control or breathing, can present significant hazards if used improperly or malfunctioning. For example, if an explosive valve is part of a system that diver should not rely on for immediate safety, and if it were to fail or be activated unintentionally underwater, it could cause a dangerous situation leading to chaos, rapid ascent, or even accidental injury.

In contrast, while weights, fins, and wet suits are also considered non-life support gear, they generally serve a practical purpose that aids in diving activities without posing the same level of risk. Weights assist with buoyancy control, fins enhance mobility, and wet suits provide thermal protection, contributing positively to the diver's safety and comfort.