The 81513001 is an intermediate supply module designed for miniature pneumatic control valve systems manufactured by Crouzet Control. It serves as a pneumatic distribution component that integrates with sub-bases and end bases for modular valve assemblies, featuring push-in connections for semi-rigid tubing (Ø 6 mm per NFE 49100 standard). The module is mounted on a DIN rail 35 mm and operates within a pressure range of 2–8 bar, with a mechanical life rating of 1.5 × 106 operations. It is available in ATEX-certified versions for use in potentially explosive atmospheres in accordance with EC Directive 94/9/EC, making it suitable for industrial automation, pneumatic logic control systems, and safety-critical applications requiring certified equipment.