Concoa 621 Series Autoswitch Laser Resonator Gas Supply System 12086

  For sale is a Concoa Series 621 Autoswitch, laser-purity gas
  delivery system.  Subassembly no.5294417.  Maximum inlet pressure:
  3,000 PSI.  Maximum delivery pressure: 150 PSI.  I have (3) Series
  621 units available for sale.  One has been used with CO2 gas, one
  with Helium, and one with Nitrogen.  All three were removed from
  use at a local manufacturing plant that has recently been shut-down.

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