What is the purpose of the float valve in a float and thermostatic trap?

The float valve in a float and thermostatic trap plays a critical role in managing the flow of condensate and ensuring efficient operation of the steam system. Its primary purpose is to open and allow condensate to exit the trap. When condensate accumulates within the trap, the float rises, which then activates the float valve to open. This opens a pathway for the condensate to leave the system, preventing any potential backpressure that could impede steam flow.

This mechanism is crucial because it helps maintain the effectiveness of the steam system by ensuring that condensate is regularly expelled. If the condensate were to build up, it could lead to inefficient heating and other operational issues due to water logging. Therefore, the correct answer highlights the float valve’s vital function in facilitating the continuous removal of condensate, thereby contributing to the overall efficiency and reliability of the steam system.