• Mica Strip Heaters

    Versatile, efficient and economical, the Mica Strip Heater is of the same construction as the Mica Band Heater in flat design.

  • Mica Band Heaters​​

    Mica Band Heaters are best suited for low to moderate temperatures, featuring thin construction and high quality insulation for effective heat transfer and excellent dielectric properties. They offer a wide variety of termination and clamping styles.

  • Coiled Cable Heaters

    Coiled cable heaters are the ultimate design in coiled type heaters. Their design and technical development gives them a longer lifespan than the competition, due to special features including:

  • Ceramic Band Heaters

    Ceramic band heaters are, in effect, high temperature electric furnaces capable of very efficient heat transfer by radiation, conduction and convection. Built-in insulation minimizes unwanted temperature changes along the barrel.

     


  • FIREROD® CARTRIDGE HEATERS

    FIREROD CARTRIDGE HEATERS ARE THE PREMIER CHOICE IN SWAGED CARTRIDGE HEATING

    The FIREROD cartridge heater revolutionized the heating element industry in 1954 when it was patented as the first swaged cartridge heater. The mechanical procedure of swaging reduces the diameter of the heater by compacting the unit; this directly improves the heat transfer and efficiency of the heater.

    FIREROD cartridge heaters are built using only the finest materials and construction methods and are backed with extensive quality assurance programs. With premium materials and tight manufacturing controls, the FIREROD heater provides superior heat transfer, uniform temperatures, resistance to oxidation and corrosion and a long life even at high temperatures.

    FIREROD offers many delivery programs to meet your needs.

    • Nickel chromium resistance wire ensures even, efficient distribution of heat to sheath
    • Magnesium oxide insulation of specific grain and purity results in high dielectric strength and faster heat-up
    • Alloy 800 sheath resists oxidation and corrosion from many chemicals, heat and atmospheres
    • Minimal spacing between element wire and sheath results in lower internal temperatures and accommodates design with fewer or smaller heaters
    • UL® and CSA approved flexible stranded wires with lead insulation rated to temperatures of 480°F (250°C)

    PATENTED LEAD ADAPTER (LA) METHOD
    Allows same day shipment on more than 150,000 configurations of stock FIREROD heaters and lead combinations

    INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO) 9001 CERTIFIED
    Provides confidence that quality and reliability expectations are met

    CONDUCTOR PINS
    Provides a metallurgical bond to the resistance wire and ensures trouble-free electrical connection


    Material
    Maximum Operating Temperatures
    Maximum Watt Densities
    W/in2
    W/cm2
    Alloy 800 1400 760 400 62
    Stainless Steel 1000 538 400 62
  • WATROD™ AND FIREBAR® SCREW PLUG IMMERSION HEATERS

    IDEAL FOR DIRECT IMMERSION HEATING OF LIQUIDS

    Screw plug immersion heaters are ideal for direct immersion heating of liquids, including all types of oils and heat transfer solutions.

    Available in a variety of sizes, Watlow screw plug immersion heaters feature both WATROD round and FIREBAR flat tubular elements.

    Heating elements are hairpin bent and either welded or brazed into the screw plug, depending on element sheath and plug material compatibility.

    General purpose terminal enclosures are standard with optional moisture resistant, explosion resistant and explosion/moisture resistant enclosures available to meet specific application needs.

    Optional thermostats provide convenient process temperature regulation to the screw plug immersion heater.

    • UL® and CSA component recognition
    • A variety of element sheath and screw plug materials to meet your application needs
    • Integral thermowells provide convenient temperature sensor insertion and replacement without draining the fluid being heated
    • Terminal enclosures provide ability to be rotated to simplify connection with existing conduits
    • Welding or brazing WATROD and FIREBAR elements to the screw plug for a pressure tight seal

  • PLATE FLANGE IMMERSION HEATERS

    Watlow plate flanged heaters are easy to install and maintain. These flanged heater products are designed for heating heat transfer fluids, medium and lightweight oils and water in tanks and pressure vessels. Plate flanged heaters are ideal for applications requiring low to medium wattage requirements.

    Watlow plate flanged heaters are made with WATROD tubular elements that are brazed or welded to the flange. Stock plate flanged heaters are supplied with general purpose or moisture-resistant terminal enclosures.

    • Rapid ship program minimizes downtime
    • Direct replacement for many OEM mold temperature control units provides a single-source supplier for many OEM application
    • ANSI compatible 2 and 2½ inch flanges for appropriate heater size-to-application fit
    • Standard, general purpose, or moisture resistant terminal enclosures to easily control access to wiring

  • FINBAR™ SINGLE- ENDED HEATERS

    DESIGNED TO IMPROVE HEAT TRANSFER TO THE AIR

    Composed of aluminized steel fins press-fitted to a one-inch single-ended FIREBAR element, the FINBAR finned tubular heater is designed to improve heat transfer to the air and permits putting more power in tighter spaces—like forced air ducts, dryers, ovens and load bank resistors.

    Heat transfer, lower sheath temperature and element life are all maximized by the FINBAR heater’s finned construction. Installation is simplified by terminations exiting at one end and mounting accommodations on both ends.

    • Rugged aluminized steel fins increase surface area to improve heat transfer to air
    • Single-ended termination simplifies wiring and installation
    • Stainless steel mounting bracket for ease of installation
    • Lavacone seals provides protection against humid storage conditions – moisture retardant to 221°F (105°C)

  • WATROD™ TUBULAR HEATERS

    FITS VIRTUALLY ENTIRE RANGE OF IMMERSION AND AIR HEATING APPLICATIONS

    Available in single- or double-ended termination styles, the versatile and economical WATROD tubular heating element from Watlow lends itself to virtually the entire range of immersion and air heating applications.

    The single-ended WATROD tubular heater design has both terminals at one end. The opposite end is sealed. Flexible lead wires are 12 in. (305 mm) crimp connected to the terminal pin and have silicone-impregnated fiberglass oversleeves.

    The double-ended WATROD, with its round cross-sectional geometry, are highly adaptable for bending—especially when bending is performed in the field. Watlow’s double-ended MULTICOIL tubular elements offer various combinations of resistor coils and thermocouples inside one sheath. They have the ability to sense the heater’s internal temperature accurately every time, or offer three-phase capability in one element.

    Both single- and double-ended WATRODs share many construction features delivering long life—the resistance wire is centered in the heater sheath and electrically insulated with compacted, high-grade magnesium oxide for superior heating performance.

    WATROD tubular heating elements have a variety of mounting and termination options making them highly popular among industrial customers.

    • Single-ended: UL® and CSA component recognition to 240VAC
    • Double-ended: UL® and CSA component recognition up to 600VAC

    PRECISION WOUND NICKEL-CHROMIUM RESISTANCE WIRE
    Distributes heat evenly to the sheath for optimum heater performance

    SILICONE RESIN SEALS
    Protects against moisture contamination and is rated to 221°F (105°C)

    MGO INSULATION FILLED SHEATH
    Maximizes dielectric strength, heat transfer and life

    STANDARD SHEATH MATERIALS
    Steel, 304 and 316 stainless steel, alloy 800/840 and alloy 600

    53 STANDARD BEND FORMATIONS
    Allows forming the heating element to the application. Spirals, compound bends and multi-axis and multi-plane configurations

    STAINLESS STEEL STUDS
    Fusion welded to terminal pins for mechanical strength

  • MULTICOIL™ HEATERS

    MULTIPLE COILS AND THERMOCOUPLES PACKAGED IN ONE SHEATH FOR QUICK INSTALLATION

    The MULTICOIL heater tubular element with multiple coils and/or thermocouples inside one sheath answers the need for a versatile, innovative tubular multiple coil heater. Watlow’s patented method of packaging a thermocouple inside of a heater with one or more resistance coils gives the ability to sense a heater’s internal temperature accurately, every time.

    Moreover, this is the first tubular heater in the industry with three-phase capability. The three coil, three-phase heater will offer a compact package solution while delivering the full power required in a compact heater package. Previously three separate heaters would have been required to do the same job; therefore Watlow’s MULTICOIL heater capabilities save money.

    • Three-phase capability results in one element versus three, lower amperage, reduced installation time and lower overall cost
    • Multiple coil operations reduces inventory by allowing dual voltage capability
    • Versatile forming capabilities forms into many configurations
    • Internal thermocouple construction eliminates contamination buildup around the external sensing tip, reducing the possibility of false readings

  • MILLED GROOVE TUBULAR HEATERS

    PRECISION FORMED TO YOUR HOT RUNNER MOLD APPLICATIONS

    WATROD milled groove heaters are precision-formed and customized to your hot runner mold application. Even tight radius bends of 0.250 inch maintaining tolerances of ±0.062 to ±0.002 inch are possible. This capability not only allows you freedom to design for the optimum uniform heating pattern for your plastics process, but also guarantees quick and easy installation.

    Simply send your groove dimensions in a detailed drawing or on CAD file. Depending on the formation requirements, the resulting CAD design will be transferred to either Watlow’s CNC bending equipment or a highly skilled bending operator.

    A variety of sheath materials are available including alloy 800, 304 stainless steel and 316 stainless steel, each offering unique advantages of long life in high temperature molds, rigidity to maintain shape during shipment and corrosion resistance.

    Watlow not only delivers the heat fast to the process with efficient heat transfer, but guarantees the heater’s fast delivery, too. While Watlow guarantees standard delivery within three to four weeks, tough delivery schedules are Watlow’s specialty.

    • Precise conformity to customer specifications ensures easy installation
    • Alloy 800 sheath material are corrosion resistant and capable in high-temperature environments
    • 304 stainless steel features excellent pliability – best choice for small bend radii
    • Superior resistance coil design produces even heating
    • Threaded stud or lead wire termination as required provides robust options for challenging environments

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