What does the symbol “x” represent in plumbing diagrams?

In plumbing diagrams, the symbol “x” is typically used to represent a sealing inlet. This symbol indicates a connection point where fluids enter a system while being sealed to prevent leaks. The design is crucial in ensuring that the system operates efficiently without any unwanted loss of materials or pressure.

Understanding the other options reinforces the significance of this designation. Drain outlets, for example, feature different symbols that signify a point for wastewater disposal. A pressure line would also have distinct symbols indicating the flow of pressurized fluids. Lastly, ventilation openings are crucial for air circulation in plumbing systems and are identified by specific symbols that differentiate them from sealing inlets. This context helps clarify the distinct roles of various components in plumbing systems, highlighting the unique function of the sealing inlet represented by the “x” symbol.