• 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)

  • FIREROD® IMMERSION HEATERS

    COMPACT HEATER ENABLES VERSATILE HEATING SYSTEM DESIGN

    FIREROD water immersion heaters are ideal for replacing large screw-plug immersion heaters. Because of its compact size the product can be very versatile when designed into a heating system.

    These water immersion heaters come complete with a brass 3⁄4 inch National Pipe Thread (NPT) double threaded fitting, which allows you to add conduit boxes. Also, FIREROD immersion heaters are sealed at the lead end with a silicone rubber seal.

    Solid copper leads, with silicone rubber sleeves, are provided for unrestricted wiring. These units are recommended for immersion in water or 90+ percent water soluble solutions.

    • Nickel-chromium resistance wire precisely centered in the unit ensures even, efficient distribution of heat to the sheath
    • MgO insulation compacted to the proper density results in high dielectric strength and contributes to faster heat-up
    • Alloy 800 sheath resists corrosion from water
    • Metallurgically-bonded conductor pins for trouble-free electrical continuity
    • 240 and 480VAC voltage allows flexibility in wiring the heater for use in your particular applications

  • HIGH-TEMPERATURE TUBULAR HEATERS

    IDEAL FOR PROCESS AIR HEATING APPLICATIONS REQUIRING HIGH TEMPERATURES

    Watlow manufactures high-temperature tubular heaters to bridge the gap between standard tubular heaters and Watlow MULTICELL™ heaters. This high temperature heater is well suited for process air heating applications in excess of 1300˚F (704˚C), resulting in a maximum sheath temperature of 1800˚F (983˚C). Controlled lab testing between the new design and current tubular designs shows an increase in life of approximately 50 percent.

    The high-temperature heaters consist of an engineered tubing with an outer sheath of Alloy 600 and a special internal construction. The outer sheath offers high temperature capabilities, reduced oxidation as well as corrosion resistance.

    The tubular heater offering is available in 0.430 and 0.375 inch diameters that are configurable either as formed tubulars or process heaters. The tubular heaters can also be welded to flanges and plates for mounting purposes. Maximum sheath length available is 275 inches for the 0.430 inch and 0.375 inch diameters. The factory should be contacted for longer sheath lengths.

    • Alloy 600 sheath material and a special internal construction maximizes performance and corrosion protection in tough applications
    • Dual-ended termination Installs into flanges and screw plugs similarly to standard product configurations
    • Bendable in standard formations makes the heater easy to apply in a wide variety of applications

  • 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

  • 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

  • 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

  • WATROD AND FIREBAR ANSI FLANGE IMMERSION HEATERS

    AGENCY CERTIFIED TUBULAR HEATERS IDEAL FOR HEATING LIQUIDS, GASES, TANKS AND PRESSURE VESSELS REQUIRING HIGHER KILOWATTS

    Watlow flanged immersion heaters are easy to install and maintain. Designed for heating liquids and gases in tanks and pressure vessels, flanged immersion heaters are ideal for applications requiring higher kilowatts.

    Watlow flanged immersion heaters are made with WATROD or FIREBAR tubular elements brazed or welded to a flange. Stock flange heaters are equipped with a general purpose terminal enclosure.

    Flanged immersion heaters, with FIREBAR elements, also answer the need for liquid immersion applications requiring high kilowatts in small tanks. The FIREBAR element’s unique flat surface geometry packs more power in a smaller bundle, with lower watt density, making it especially well-suited for petroleum-based liquid heating applications.

    • UL® and CSA component recognition
    • ANSI and ANSI compatible 2, 2½, 3 thru 48 inch flanges
    • All units are inspected and/or tested to ensure element-to-flange pressure seals do not leak
    • Integrel thermowells provide convenient temperature sensor insertion and replacement without draining the fluid being heated
    • Standard, general purpose terminal enclosure for easy access to wiring

  • 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

  • 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

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