The structure of a wall-mounted penstock typically consists of several components designed to control the flow of water or other fluids：

1. Frame: The penstock's frame is mounted on a wall or a structure, providing stability and support for the entire system.

2. Gate: The gate is the movable part of the penstock that controls the flow of fluid. It can be made of various materials, such as stainless steel, aluminum, or even reinforced rubber. The gate is typically operated manually or through an automated system.

3. Sealing Mechanism: To ensure a watertight seal when the gate is closed, a sealing mechanism is employed. This can include rubber gaskets, O-rings, or other types of sealing materials.

4. Actuator: In automated penstocks, an actuator is used to control the movement of the gate. It can be an electric motor, hydraulic system, or pneumatic device, depending on the specific design and requirements.

5. Control System: The control system regulates the opening and closing of the gate. It can be a simple manual control, a remote control, or even an integrated system that monitors and adjusts the flow based on various parameters like water level or pressure.

6. Support Structure: The penstock is securely attached to the wall or structure using a robust support system. This ensures stability and prevents any movement or deformation during operation.

7. Drainage System: To prevent water from accumulating behind the gate when it is closed, a drainage system is often incorporated. This allows any trapped water to be safely relea