Which of these parts would likely be found in the valve body?

The pressure regulator valve is indeed a key component found in the valve body of an automatic transmission. The valve body is crucial as it serves as the control center that directs hydraulic fluid to the appropriate components, allowing for proper operation and shifting of gears. The pressure regulator valve specifically manages the hydraulic pressure within the transmission, ensuring that the correct amount of fluid pressure is available for the various functions of the transmission system. This regulatory function is essential for maintaining the performance and lifespan of the transmission.

In contrast, the torque converter is a separate component that functions to transfer power from the engine to the transmission, facilitating smooth acceleration. Brake bands are components that are used to apply brakes to certain gears within the transmission but are not housed within the valve body itself. Lastly, a filter screen serves the purpose of filtering the transmission fluid but is typically located outside the valve body, often part of the fluid pan assembly or transmission case to ensure clean fluid circulation.