1-Stage glass diffusion pump manufactured by PWL type "PDS/P-1"
This pump is called "PDS/P-1" because "Pompa Dyfuzyjna Szklana z ch³odzeniem Powietrznym - wersja 1" would be translate as "Glass diffusion pump with air cooling - version 1".
This pump is simple, homemade version of diffusion pump.

fig.1. Glass oil diffusion pump type PDS/P-1
Technical parameters:
  • critical pressure >10-2 Tr
  • ultimate pressure <5*10-5 Tr (measured by Bayard-Alpert gauge)
  • quantify of oil 15 ml (DC705, santovac)
  • power consumption 70W/230V
  • air cooling
  • kind of glass: soda
  • height 35 cm
  • latitude 10 cm

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