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

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

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

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