Best Seller Items
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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
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INSULATED TUBE & WIRE THERMOCOUPLES STYLE 62
SERV-RITE® INSULATED TUBE & WIRE THERMOCOUPLES – STYLE 62
STYLE 62 IS FITTED WITH AN ENCAPSULATED MEASURING JUNCTION THAT IS IDEAL FOR CORROSIVE FLUIDS AND GASES, SUCH AS SULFURIC ACID, HYDROFLUORIC ACID, STRONG MINERAL ACIDS AND OILS
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SERIES CZR
SOLID STATE RELAY OFFERS A COMPACT, VERSATILE MERCURY-FREE SOLUTION
The SERIES CZR solid state relay provides a low-cost, highly-compact and versatile solid state option for controlling electric heat. With DIN-rail and back panel mounting standard on every controller, the CZR solid state relay allows for simple and quick installation.
The extensive capabilities of the SERIES CZR include single-phase, 18 to 42 ampere zero-cross switching up to 600VAC (see output rating curve). It’s unique integrated design removes the guess work associated with selecting a proper heat sink and precise terminations for the application.
This solid state relay controller holds many agency certifications and is ideal for applications that require UL®, CSA and CE approvals. The SERIES CZR is available in VAC/VDC input contactor versions and all configurations are model number dependent and factory selectable.
The SERIES CZR solid state relay is protected by a two-year warranty.
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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:
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MINERAL INSULATED THERMOCOUPLES – STYLE AC – STANDARD PLUG OR JACK TERMINATION
WATLOW’S MINERAL INSULATED (MI) THERMOCOUPLES ARE FAST-RESPONDING, DURABLE AND CAPABLE OF HANDLING HIGH TEMPERATURES.
Manufactured with best-in-class XACTPAK®, Watlow’s trademark for metal sheathed, mineral insulated (MI) thermocouple material, XACTPAK responds fast because the protective metal outer sheath allows use of smaller diameter thermocouple conductors. The rock hard compacted MgO insulation further enhances the sensor’s ability to “read” temperature by transferring heat quickly to the measuring junction.
The XACTPAK protecting sheath and compacted insulation outperform bare wire thermocouples in most applications
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LDH SERIES AND D SERIES DUCT HEATERS
EASILY ADAPTED TO MANY NON-PRESSURIZED AIR HEATING SYSTEMS
Watlow duct heaters are constructed of sturdy 0.430 in. (11 mm) diameter WATROD heating elements mounted to a 1⁄4 in. (6 mm) thick steel flange. These air duct heaters are easily adapted to many non-pressurized air-heating systems.
Duct heaters are easily installed in applications requiring a wide range of temperature versus air flow combinations.
The modular duct heater offers increased reliability. The individual modules are removable through the housing of the assembly, which eliminates the need to pull the complete heater from the ductwork. This reduces downtime costs because the heating elements can be replaced individually. Performance improvements include quicker response time and reduced infiltration from the air stream being heated into the electrical enclosure.
Watlow air duct heaters offer advantages over gas or oil fired and open coil electric units with:
-Installation flexibility—no flues or fuel lines
-100 percent energy efficient—no energy loss up the flue
-Universal availability of electricity
-Resistance coil in sheath is protected from corrosive environments
-Duct heaters with general purpose enclosures meet UL® and CSA component recognition to 480 and 600VAC maximum respectively—UL® and CSA file numbers are E52951 and 31388.- Long life alloy 800 sheath resists corrosion/oxidation while protecting resistance coils against contamination
- MgO insulation filled elements compacted to rock hard density maximizes dielectric strength, heat transfer and life
- Field replaceable heating elements permits easy service and reduces downtime
- General purpose terminal enclosure offers easy access to wiring
- WATROD hairpins are recompacted after bending to eliminate hot spots and electrical insulation voids
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Mineral Insulated (MI) Band Heaters
The MI band heater from Watlow® is a high-performance heater.
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Mica Strip Heaters
Versatile, efficient and economical, the Mica Strip Heater is of the same construction as the Mica Band Heater in flat design.
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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.
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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:
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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.
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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 combinationsINTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO) 9001 CERTIFIED
Provides confidence that quality and reliability expectations are metCONDUCTOR PINS
Provides a metallurgical bond to the resistance wire and ensures trouble-free electrical connection
Material Maximum Operating TemperaturesF°C°Maximum Watt DensitiesW/in2W/cm2Alloy 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
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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
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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)
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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 performanceSILICONE RESIN SEALS
Protects against moisture contamination and is rated to 221°F (105°C)MGO INSULATION FILLED SHEATH
Maximizes dielectric strength, heat transfer and lifeSTANDARD SHEATH MATERIALS
Steel, 304 and 316 stainless steel, alloy 800/840 and alloy 60053 STANDARD BEND FORMATIONS
Allows forming the heating element to the application. Spirals, compound bends and multi-axis and multi-plane configurationsSTAINLESS 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
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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
