What must valves be identified with when not adjacent to the appliance being served?

Valves that are not located adjacent to the appliance they serve must be clearly identified to ensure safety and efficient operation. Labeling these valves is crucial because it allows anyone interacting with the plumbing system to quickly determine which fixture or appliance the valve controls. This is particularly important in emergency situations or for maintenance purposes, as it prevents confusion and potential mishaps that could occur if a wrong valve were manipulated.

Identifying valves with a label that indicates the specific fixture they serve ensures that personnel can manage the system effectively, reducing the risk of accidents such as turning off the wrong valve, which could disrupt service or lead to plumbing failures. Proper labeling is a fundamental practice in plumbing installation to maintain clarity and accessibility in plumbing systems.