# Pumps

Part ID: 5.06a · Layer 5 (Liquid cooling (IT-side: chip to CDU)) · child of 5.06

Pumps inside the CDU that circulate technology-side coolant through the cold plates and back, often configured with redundancy so a single pump failure does not take the loop offline.

## Companies

| Company | Role | Confidence | Ownership | Ticker | Note |
|---|---|---|---|---|---|
| Iwaki | manufacturer | inferred | public | 6237.T |  |
| KSB | manufacturer | inferred | public | KSB.DE |  |
| Xylem | manufacturer | inferred | public | XYL |  |
| Grundfos | manufacturer | inferred | private |  |  |
| Wilo | manufacturer | inferred | private |  |  |

Confidence tags: disclosed = company/filing statement; reported = trade press or partner list; inferred = taxonomy lead.