Dalton Diff-Therm Vacuum Diffusion Pump Heater  
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Electric Heating Co., Inc


Diff-Therm Platen Heaters Overview of product features and benefits.

Platen Selector Guide
View heater casting shapes and sizes.

OEM Cross Reference
Find replacement heaters by manufacturer, pump size, and electrical rating.

  CVC Products
  Cooke Vacuum
  Edwards High Vacuum
  Torr Scientific
Pricing Information


Dalton Warranty


Direct Replacement Heaters for Every Major Brand of Vacuum Diffusion Pump
Platen Heater from Dalton Electric
  • Cooke
  • CVC
  • Denton
  • Edwards
  • Leybold
  • NRC
  • Perkin Elmer
  • Torr
  • Varian
  • Veeco
Diff-Therm Platen Heaters are high-quality tubular heating elements swaged under 50 tons of pressure into grey iron castings. For 25 years, Diff-Therm heaters have set the standard for long-life, evenly distributed process heating and efficient power generation.

Complete Range of Pump Heater Shapes and Sizes Platen Heater Castings  - Wide variety with matching bolt patterns for easy replacement of vacuum diffusion pump heaters.
  • Over 100 combinations of electrical ratings and casting sizes from 2" to 48".
  • Sizes, shapes and bolt patterns designed to fit OEM pumps.
  • Custom castings and electrical ratings available
    for obsolete or foreign-made pumps.
  • Effective replacement for cast-in heaters, tubular /crush plate heaters, and pancake-style heaters.

Outperform Original Equipment Heaters

Unique swaged assembly provides increased dielectric density for better heat transfer and longer heater life.

Diff-Therm Platen Heaters  outperform OEM heaters with better heat transfer and longer heater life.
  • "Full Power" heaters that produce 20% more heat than OEM heaters.
  •  Flat, smooth platen surface assures uniform, efficient heat transfer.
  •  Increases pump throughput and higher vacuum system processing rates.

One-Piece Assembly Simplifies Installation

  • Simpler and faster to install than conventional tubular/ crush plate systems
  • Proper alignment never a problem
Platen Heater from Dalton Electric is a one-piece assemble that simplifies installation.

Watt-Flex Split-Sheath Cartridge Heaters Outperform Conventional Heaters Cartridge Heater with unique split sheath  expands when energized to maximize diffusion pump heat transfer.
  • Split-sheath design expands when energized for better heat transfer - especially in oversized bores.
  • Warranted removal - heater contracts when de-energized for easy removal.


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Dalton Electric Heating Co., Inc (978) 356-9844
28 Hayward Street, Ipswich, MA 01938 USA

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