The SMC AS-20A1 is a precision flow control accessory designed for optimal performance in heavy-duty industrial applications. This lightweight and compact adapter enhances the reproducibility of flow rates with its innovative in-line type design. Featuring a numerical indication system visible through four indicator window directions, it ensures accurate and efficient flow management. Ideal for situations where the mounting surface interferes with the bonnet, the AS-20A1 offers improved visibility and ease of use, making it a reliable choice for precision speed control.