JOUCOMATIC Square Profiled Barrel Cylinders (Type PES) are designed for precise control and efficient operation in pneumatic systems, and they offer the advantage of being able to position the T-slot grooves on the cylinder on 4 different positions with reference to the axes of the pressure supply ports. They are also highly recommended for applications in harsh environments, such as chemicals, refining, food & beverage processing, and life sciences. Additionally, the dynamic locking device (series 463) can be fitted to the 453 series Type PES cylinders for added safety and security in the event of air pressure or power failure during operation.