Roots vacuum pump nXQ55i

drymulti-stagehelium

Overview
The nXQ55i is a dry, dust‑free multistage Roots pump designed to minimise gas loss and ensure consistent, repeatable operation in sensitive processes. Its leak‑tight construction preserves gas purity and system integrity while providing reliable performance on light and rare gases such as helium‑3 and helium‑4. Typical applications include helium cryostats, dilution refrigeration, leak detection and gas recovery/recirculation systems where secure containment is essential.

Features and benefits

• Leak‑tight design
  Developed to meet stringent leak‑tightness standards with leak rates below 5×10⁻⁸ mbar·l/s. Each unit undergoes an integral leak test and is delivered with a certificate documenting successful validation.

• Strong light gas performance
  Optimised for rare and light gases; provides high pumping speed for helium (up to 52 m³/h), supporting efficient recovery and stable operation in continuous or demanding use.

• Dry pump design
  Compact, oil‑free, dust‑free design supports clean processes, reduces maintenance and eliminates oil changes or disposal. Low noise and reduced energy consumption contribute to a lower total cost of ownership and extended maintenance intervals.

Technical specifications

• Model: nXQ55i
• Leak rate: below 5×10⁻⁸ mbar·l/s (integral leak test supplied with certificate)
• Helium pumping speed: up to 52 m³/h (for helium)
• Suitable gases: helium‑3, helium‑4 and other light/rare gases
• Design: dry, multistage Roots pump (dust‑free)
• Maintenance interval: low maintenance, up to 5 years under recommended conditions
• Applications: helium cryostats, dilution refrigeration systems, leak detection, recovery/recirculation of rare gases and other sensitive containment applications
• Benefits: low noise, reduced energy consumption, no oil changes or oil disposal