Which plumbing symbol indicates a safety valve?

The plumbing symbol that indicates a safety valve is represented by a circle with an 'S'. This designation is widely recognized in plumbing diagrams and schematics, helping professionals quickly identify the component's purpose. A safety valve is crucial for maintaining system pressure and preventing potential hazards, which is why a distinct symbol is important in design and installation plans.

Circles often imply functionality and flow in plumbing systems, while the letter 'S' specifically denotes the safety feature of the valve, providing clarity in the context of safety systems. This clear representation aids in effective communication between designers, installers, and maintenance personnel, ensuring that everyone understands where safety components are located within the overall plumbing design.