Flange Heaters Type CX

Flange heaters are used to heat liquids or gases in tanks or in-line vessels. Safe and reliable service from the heater requires the correct selection of materials and heating element watt density.

High amperage heaters allow staging through 45 AMP subcircuits to allow the use of 50 AMP definite purpose magnetic contactors on each circuit.
Terminal lugs and grounding lugs are provided.

Watt Density
Watt density refers to the wattage output of a heater divided by the total surface area of the heated sections of all heating elements in the heater. It is important to understand the basic thermal difference between an electric immersion heater and a steam or liquid heat exchanger. Unlike the steam or liquid heat exchanger, all of the heat produced by an electric heater will leave the heater. Even though the surface area in contact with the work is fixed, the heating element sheath temperature will continue to rise until the heat produced is equal to the heat transferred to the process.
A detailed understanding of this behaviour and the system parameters will allow the design of a suitable heater to heat virtually any liquid or gas with the only limitation being its ability to resist corrosion in highly active solutions. As a general rule, low watt density heaters will provide longer service life than high density heaters, especially when the fluid being heated is viscous or stagnant. However, low density heaters are initially more expensive.

Construction

Standard heaters listed have 150 lb. ANSI rated steel flanges and copper or incoloy sheathed elements silverbrazed to the flange.
Heaters pictured on these introductory pages are examples of some of the custom heaters produced to meet special
process requirements.

Moisture and Sealing
Standard flange heaters have unsealed heating element ends and utilize magnesium oxide for both electrical insulation and heat transfer. Magnesium oxide in contact with the atmosphere will hydrate … absorb moisture, lowering the insulation resistance
of the heater.
On start-up, this often results in small leakage currents which pose no hazard to operating personnel or equipment in properly grounded systems. However, these currents may be sufficient to trip a ground fault interruptor (G.F.I.) and shut down the system.
General procedure is to by-pass the G.F.I. until the heater dries itself out after a period of operation. If this is impractical, it is best to order a heater with special end seals.

Flange Heaters Type CX – 2 1/2″ Flange Heaters

Type CXC heaters are used primarily for heating water and have copper sheathed elements silver brazed to a steel flange. Type CXI heaters may also be used to heat water, especially in hot water and steam boilers. These heaters are also suitable for heating mildly corrosive solutions inrinse tanks, spray washers,
etc.
Heaters consist of incoloy sheathed elements silver brazed to a steel flange. Type CXF heaters are constructed of similar materials to CXI heaters except that the heating elements have much lower watt densities. These heaters are especially suited to heating oils, gases and mildly corrosive liquids. Select the lower density CXF heaters for stagnant or heavy oils or for high temperature, low flow gas heating.

TO ORDER SPECIFY: Quantity, catalog number, voltage, phase, wattage and special features. See attached brochure above for details. Contact us for inquiries.

Flange Heaters Type CX – 3″ Flange Heaters

Flange Heaters Type CX – 4″ Flange Heaters

Flange Heaters Type CX – 5″ Flange Heaters

Flange Heaters Type CX – 6″ Flange Heaters

Flange Heaters Type CX – 8″ Flange Heaters

TO ORDER SPECIFY: Quantity, catalog number, voltage, phase, wattage and special features. See attached brochure above for details. Contact us for inquiries.