Pistons and air valves Air cylinder Air pistons cover small, mini and standard shapes with a diameter of only 16 mm The required journey is square The required journey where the circular piston now appears to be a rectangular sector and the circular piston is known as aluminum and stainless steel and the difference is only in the manufacturing material and the short piston is a small piston that differs in the shape of the cylinder and the guide piston is the distinctive piston 2 columns or 3 columns Air valve to control the fast flow valves and control that it speeds up or slows down the cylinder journey in the presence of a difference and there are also types in which there is a non-return valve to pass the air in one direction or at the same time only one and the types of air valves (1) Directional directional valves (2) Valves controlling the flow valves speed (3) Valves adjusting the maximum pressure Pressure relief valve