Precision High Vacuum Pump Repair An ISO 9001:2008 certified company The leader in pump remanufacturing for 30 years Vac-Tech services the full spectrum of vacuum pump, including: Mechanical pumps, rotary vane, piston, liquid ring, Dry pumps, Cryogenic pumps and compressors, Turbo molecular pumps, Diffusion pumps. On-Site Service Contracts that provide a vacuum service technician to maintain your pumps at your facility.