CTI Cryogenics Cryo-Torr 7 high vacuum pump

Product Description

CTI Cryogenics Cryo-Torr 7 High Vacuum Cryopump (Part # D3996045)

This is a CTI Cryogenics Cryo-Torr 7, a closed-cycle helium cryopump designed for achieving high to ultra-high vacuum (UHV) in demanding applications such as semiconductor fabrication, research instrumentation, and space simulation. Identified by part number D3996045, this pump is sold AS IS for parts, repair, or evaluation by vacuum technicians and engineers.

Key Specifications (Typical of Cryo-Torr 7 Series):

• Type: Closed-cycle cryopump (two-stage Gifford-McMahon cooler)

• Cold Head: Integrated cryocooler with first stage (~77K) and second stage (~10–20K)

• Pumping Speed: High capacity for water vapor, oils, and permanent gases (e.g., N₂, O₂, Ar)

• Port Size: Typically ISO-KF, CF, or ANSI flange (common: 6″ or 8″ NW)

• Cooling System: Requires external helium compressor (not included)

• Regeneration: Requires periodic warming/purge cycle to release captured gases

• Applications: Electron microscopy, sputtering/evaporation systems, particle accelerators, space testing

Potential Uses:

• Vacuum System Repair: Donor pump for restoring an identical CTI cryopump system.

• Component Salvage: High-value cryocooler cold head, radiation shields, cryopanels, temperature sensors, and flanges.

• Educational/Research: For teaching cryogenic vacuum technology or prototyping specialized cooling setups.

• Spare Parts Source: For maintaining other CTI or similar cryopumps in operation.

Important Notes:

• Not Operational As-Is: Requires a compatible helium compressor, controller, and regeneration system to function.

• Refrigerant Handling: Specialized knowledge and equipment are needed to handle helium charge and compressor oil.

• Regeneration Required: If the pump has been warm and exposed to atmosphere, it must be regenerated before cooling to avoid internal damage.

• Technical Expertise Essential: Suitable only for trained vacuum or cryogenic technicians.