According to official ASM documentation for vacuum pump retrofit kits, the part with part number 03046348-01 is designated as "Aperture ring, assy. C+P20."
Function and Purpose
This component is an integral part of the vacuum system retrofit for C+P20 placement heads. It is included in the conversion kit (00119790-xx) required when upgrading C+P20A/M/P heads from compressed-air-driven operation to vacuum-pump-driven operation. In vacuum-pump mode, it works in conjunction with the vacuum generator to regulate or restrict the airflow aperture, ensuring the negative pressure characteristics required for reliable component pickup by the nozzles.
Procurement Note
Please note that this item is a sub-component of a vacuum retrofit kit, not a standalone "distributor" or "manifold." It is only required when upgrading equipment from a compressed-air-driven system to a vacuum-pump-driven system. For routine maintenance or replacement, always verify the current pneumatic configuration of your equipment (i.e., whether it uses compressed air or a vacuum pump) to ensure compatibility.
