Liquid Refrigerant Cold Trap

Features:

  • Design permits use with commercially available cryogenic liquids

  • Extremely high efficiency reduces rate of liquid refrigerant loss.

  • Baffle design results in optical density.

  • All parts are made of 304 stainless steel.

  • ASA 150# flanges match standard pump flanges.

  • Available in straight-line model.

Description:

This cold trap reduces the flow of oil and vacuum contaminant vapors back streaming into the system chamber.  Vapor molecules receive backward velocity due to intermolecular collisions and the motion is called back streaming.  The Cooke cold trap pumps vapors such as oil and water by condensation and incorporates maximum conductance while effectively reducing back streaming.The thermal efficient design trap works even with refrigerated H2O.

Although the inert gas welded thimble trap series may be used directly above most diffusion pumps, it is preferable to use either a water-cooled or ambient baffle between the multi-coolant trap and the diffusion pump.The combination reduces the heat radiated from the pump thus reducing the consumption of the refrigerant.A water baffle may be included in the trap or placed separately in the vacuum flow.

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Cooke related components

For maximum performance couple 4000 series with these components:

 

Size

Cold Trap

Diffusion Pump

Ambient H2O baffle

Valve

2”

4000

DPD2-325

DAB-2S

3400,5000

4”

4010

DPD4-1250

DAB-4A/S

3000,5010

6”

4020

DPD6-2400

DAB-6A/S

3100,5020

10”

4030

DPD10-5300

DAB-10A/S

3200,5030