A brake chamber expander, also known as a service brake chamber push rod, is a component of an air brake system used in vehicles such as trucks and buses.
It is specifically used in brake chambers to regulate the application of air pressure and control the movement of the brake shoes or brake pads that apply friction to the wheels to slow down or stop the vehicle.
The high and low gear control cylinder is one of the key components in the hydrulic system of the pump truck,which is mainly used to control the speed and force of the pump truck
boom and the pumping system to achieve efficient operation under different working conditions.
