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Level 2 · Buyer· 4 min read·Updated 2026-06-27

Single user vs multi user

Sharing one machine is easy with the right accessories. Going beyond two simultaneous users changes the buying decision.

Key takeaways

  • Two users: Y connector + two cannulas on any 900+ ml/min machine.
  • Two users, full output: dual-outlet machine like the HERO Dual 20.
  • Three or more: professional system with multiple outlets and cooling headroom.

Splitting output

A Y connector halves the flow at each cannula. On a 1,200 ml/min machine that gives each user roughly 600 ml/min — comfortable for routine sessions.

Frequently asked questions

No. Purity is set by the PEM stack. The Y connector only splits volume.

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HydrogenMachines™ systems are built using evidence‑informed engineering, natural materials, and transparent construction. Independent laboratory testing confirms gas purity and composition.