How does push nipples function in a heating system?

Push nipples serve a specific function in a heating system by connecting radiator sections together. They are typically used to join multiple sections of a radiator, allowing for the efficient transfer of hot water or steam through the radiator. This connection is crucial because it ensures that all parts of the radiator are effectively heated, contributing to the overall efficiency of the heating system.

When installed correctly, push nipples allow for a continuous flow path for the heating medium, enabling each section of the radiator to perform its function without leaks. This is particularly important in systems where water or steam is circulated at high temperatures, as proper connections help maintain system pressure and efficiency.

In contrast, other options focus on different aspects of a heating system that push nipples do not address directly. For instance, regulating water flow is managed through valves, while pressure settings are controlled through specific devices such as pressure relief valves. Providing a tight seal in joints is relevant to many components in a heating system, but push nipples specifically facilitate the connection between radiator sections rather than acting as a sealing component per se. Therefore, the role of push nipples as connectors is vital to maintaining the function and efficiency of the heating system.