This is an NRC-0183 diffusion vacuum pump. NRC was later bought by Varian, and this model became the Varian VHS-4.
I cleaned it well, it could use a final cleaning right before use to get any dust out, but it should do pretty well without a deep clean. I don't have a convenient way to test its ultimate vacuum, but the heater works and all the pieces are there. Let me know if you have questions. Make an offer if interested! The item "NRC 0183/Varian VHS-4 diffusion vacuum pump, clean, heater works" is in sale since Tuesday, October 10, 2017.This item is in the category "Business & Industrial\Hydraulics, Pneumatics, Pumps & Plumbing\Pumps & Pump Accessories\Vacuum Pumps\Other Vacuum Pumps". The seller is "jcdynamics" and is located in McGregor, Texas.
This item can be shipped to United States.