Dalton Cartridge Heaters

The Revolutionary Watt-Flex® Split-Sheath Cartridge Heater

For Regular type of Cartridge heaters click here.

Through the patented split-sheath design and highly specialized manufacturing techniques, Dalton Watt-Flex cartridge heaters reduce your total cost of process heating by an average of 40% over other heaters.

Dalton Electric's Watt-Flex Cartridge Heaters use a unique, patented split-sheath design that expand when energized to maximize heat transfer through greater contact with the wall of the bore. Better heat transfer means less power is consumed to maintain the set point temperature, reducing operating costs.

The Watt-Flex heater construction eliminates ceramic cores typically found in conventional cartridge heaters. Dalton has developed and highly-specialized manufacturing techniques to compact high-grade MgO dielectric to its near theoretical maximum around the heater coil, which increases dielectric strength and heat transfer away from the coil which results in significantly longer heater life.

Watt-Flex cartridge heaters last up to 5 times longer than conventional heaters with less downtime for heater replacements and lower maintenance costs. Watt-Flex heaters contract when de-energized, eliminating bore seizure and the need for expensive drill-outs.

To find out how Dalton Watt-Flex heaters can reduce your your process heating costs, call us today at (905) 564-7227.

Conventional vs. Watt-Flex®

Catridge Heater

Conventional Cartridge Heater

Wattflex

Watt-Flex® Cartridge Heaters

The high purity MgO dielectric in Watt-Flex heaters is compacted to extreme density, ensuring maximum heat transfer away from the core to the heater sheath. As the energized split-sheath expands, it creates intimate contact with the bore wall, efficiently transferring heater sheath to the host metal.

Conventional ceramic core cartridge heaters (shown below) use multiple heating cores that can independently burn out, causing a cold section on the sheath. And voids of coil at core junctions produce cold sections on the heater profile.

Unlike conventional ceramic heaters, Watt-Flex heaters use a continuous heating coil to achieve a more uniform temperature profile. With Watt-Flex heaters, there are no independent heating element sections to burn out. Watt-Flex heaters are either totally on or totally off.

Cross Sectional Comparison

Advantages:

Maximizes Heat Transfer
Reduces Maintenance Costs
Reduces the Cost of Process Heating
Hot Tip or Cool Tip Option
Ideal for use in oversized bores.
Eliminates need for tight fits, tight tolerance bores.
A single continuous heating coil ensures a uniform temperature profile.
No sections to burn out as in conventional cartridge heaters.
Watt-Flex's tightly compacted MgO dielectric accommodates higher watt densities - up to 50% higher warrantable heat densities than conventional heaters.
External Thermocouple Option- a Watt-Flex exclusive-provides more accurate temperature at the point of heat transfer to host metal.