Dalton Diff-Therm - Platen Heaters for Vacuum Diffusion Pumps

The Diff-Therm® Platen Heater

Our Dalton Diff-Therm® Heaters are built with high-purity magnesium oxide, nickel chromium resistance wire, and stainless steel internal components. Special filling methods and equipment compact the magnesium oxide tightly inside and around the resistor helix, which is then swaged under 50 tons of pressure to its maximum possible density. The result is very high dielectric strength and efficient internal heat generation. Diff-Therm castings are machined to a smooth, flat finish to ensure efficient and uniform heat conduction into the boiler plate assembly for steady vaporization of the pump fluid.

Diff-Therm platen heaters solve the problem of short lived OEM diffusion pump heaters. The unique design maximizes heat transfer through the boiler plate to generate maximum vacuum fast and reliably. Invest in the future of your pumps today and unlock the true potential of your vacuum system.

Outperform Original Equipment Heaters

Our unique swaged assembly provides increased dielectric density for better heat transfer and longer heat life. Here are a few of the benefits:

• “Full power” heaters that produce 20% more heat than OEM heaters.
• Flat, smooth platen surface assures uniform, efficient heat transfer.
• Increases pump throughout and higher vacuum system processing rates.

One-Piece Assembly Simplifies Installation

Our one-piece assembly makes it easier and faster to install than a conventional tubular/crush plate system. Proper alignment will also never be an issue.

The one-piece Diff-Therm assembly simply bolts to the bottom of the boiler plate, replacing the tubular heater, crush plate, and clamping plate thus eliminating the complicated alignment process. Compared with the limited contact area (one side of the tubular element) of conventional designs, the flat surface of the Diff-Therm platen provides greater contact area for more effective heat transfer to the boiler plate.

Outperform Conventional Heaters

Dalton’s Watt-Flex Split-Sheath Cartridge Heaters have been shown to outperform conventional heaters:

• Split-sheath design expands when energized for better heat transfer, especially in oversized bores.
• Warranted removal: heater contracts when de-energized for easy removal.

Interested in learning more? Give us a call today!

Diff-Therm® Platen Heaters are high-quality tubular heating elements swaged under 50 tons of pressure into grey iron castings. For more than 25 years, Diff-Therm® heaters have set the standard for long life, evenly distributed process heating, and efficient power generation.

Platen Selector Guide

Diff-Therm Platen Heaters can be configured in over 100 combinations of electrical ratings.

OEM Cross Reference

When you need to find parts or replace your heater, choose Dalton Electric Heating Co., Inc. We make it easy for original equipment manufacturers (OEMs) to find replacement heaters by manufacturer, pump size, and electrical rating. Take a look through the information below.

Systems Our Platen Heaters Can Replace
Our Diff-Therm Platen Heaters have been specifically designed to work as replacements for the following systems:

Matching bolt patterns, casting shapes and sizes will ensure ease of installation. Superior design and meticulous construction will also ensure uniform heating, longer life, and efficient power generation.

Revolutionary Design
Our Dalton Diff-Therm Heaters are built with high-purity magnesium oxide, nickel chromium resistance wire, and stainless steel internal components. Special filling methods and equipment compact the magnesium oxide tightly inside and around the resistor helix, which is then swaged under 50 tons of pressure to its maximum possible density. The result is very high dielectric strength and efficient internal heat generation. Diff-Therm castings are machined to a smooth, flat finish to ensure efficient and uniform heat conduction into the boiler plate assembly for steady vaporization of the pump fluid.

To order a replacement heater, select the Dalton Diff-Therm heater below that matches your equipment.

Brands

CVC Products

Diff-Therm Platen Heaters are designed as direct replacements for CVC Products Vacuum Diffusion Pump heaters.

Matching bolt patterns, casting shapes and sizes ensure ease of installation. Superior design and meticulous construction ensure uniform heating, longer life, and efficient power generation.

Dalton Diff-Therm heaters are built with high-purity magnesium oxide, nickel chromium resistance wire, and stainless steel internal components. Special filling methods and equipment compact the magnesium oxide tightly inside and around the resistor helix which is then swaged under 50 tons of pressure to its maximum possible density. The result is very high dielectric strength and efficient internal heat generation. Diff-Therm castings are machined to a smooth, flat finish to ensure efficient and uniform heat conduction into the boiler plate assembly for steady vaporization of the pump fluid.

To order a replacement heater, select the Dalton Diff-Therm heater below that matches your CVC Products equipment.

Diff-Therm Technical Brief

Simplify Vacuum Diffusion Pump Heating
Vacuum diffusion pumps require an effective heating system to drive the pump. Conventional designs often employ a complicated series of components that must be carefully matched up, adding unnecessary time, labor, and cost to the replacement process.

Many vacuum diffusion pumps use a tubular heater, clamping plate, and crush the plate assembly for fluid heating. The tubular heater is pushed against the pump boiler plate by a dimpled crush plate. Heat transfer is limited to those points at which the heater makes contact with the flat boiler plate.

The crush plate is held in place by a clamping plate which is attached to the base of the pump by one or more studs. Proper alignment of the assembly is critical and can be difficult if space is limited.

Diff-Therm vacuum diffusion pump heaters solve this problem of conventional heater design. the tubular element is swaged directly into a cast iron platen, increasing the density and uniformity of the insulation for better heat transfer. Better heat transfer means longer heater life.

The one-piece Diff-Therm assembly simply bolts to the bottom of the boiler plate, replacing the tubular heater, crush plate, and clamping plate thus eliminating the complicated alignment process. Compared with the limited contact area (one side of the tubular element) of conventional designs, the flat surface of the Diff-Therm platen provides greater contact area for more effective heat transfer to the boiler plate.

Dalton Electric Heating Company manufactures and stocks Diff-Therm heaters for almost every pump model. Diff-Therm heaters are available for 2″ to 48″ Diffusion Pumps in over 100 combinations of electrical and casting sizes.