Multi-Coolant Baffles

Features: 

  • Available in 4”, 6” and 10” sizes.
  • If special gasketing is required, specify type and location.
  • Exclusive optically-dense shrouded herringbone design.
  • Cryo-reservoir all 304 stainless steel
  • Housing available in 304 stainless steel or aluminum.
  • ASA, ISO or custom.
  • May be used with liquid nitrogen, Freon refrigerants, or water
  • High conductance due to superior design
  • Increases overall system efficiency over conventional chevron baffle.

Description:

A multi-coolant or refrigerated type baffle is normally employed as a primary or secondary baffle to reduce backstreaming above diffusion pumps.  Its principal function is to condense vapors coming from the system or from the diffusion pump, and when used in conjunction with properly designed intermediate baffling, to condense vapors from the system above, thus acting as a pump to achieve an ultra-high vacuum. In addition to condensing, or trapping vapors, the baffle must allow non-condensable gases to move through it with as little impedance as possible.  To do this, the baffling must be optically dense and so constructed, that any molecule entering from the system in any direction will strike a chilled surface.  This criterion for multi-coolant baffles is achieved in the shrouded herringbone design of the DMC series.  This combination of a refrigerated shroud and the herringbone fins produces a high conductance baffle while still maintaining the ability to condense the majority of the condensable vapors.

Although the DMC series baffles may be used directly above most diffusion pumps, it is preferable to use either a water-cooled or ambient baffle between the DMC multi-coolant baffle and the diffusion pump.  This combination reduces the heat radiated from the system thus reducing the consumption of the refrigerant.  A water baffle may be included in the trap itself or separately fitted with a DAB series baffle.

For more info or pricing on this product, please click on: Request Information and include part:
"Multi-Coolant Baffles"

Cooke related components

For maximum performance couple DMC series with these components:

Size

DMC Baffle

Diffusion Pump

Ambient H2O baffle

Valve

4”

DMC-4A/S

DPD4-1250

DAB-4A/S

3000,5010

6”

DMC-6A/S

DPD6-2400

DAB-6A/S

3100,5020

10”

DMC-10A/S

DPD10-5300

DAB-10A/S

3200,5030