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Bottom-Mounted Heaters
Bottom-Mounted immersion heaters were originally designed for use in coffee urns. However, their compact construction makes them ideal for use in steam tables, humidifiers, sterilizers and other applications requiring a very low heater profile and a short element length.
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Contactor Control Panels
ON/OFF process temperature control is recommended for less demanding applications. Systems with two or more heating stages utilize an electronic sequencer (step controller), driven by an analog output PID temperature controller to minimize the amount of load cycling while providing good outlet temperature control.
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Cooling Tower Control Panels
Heatrex offers a pre-engineered, UL Listed/CSA Approved package for freeze protecting cooling tower basins.
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Cooling Tower Heaters
Cooling Tower Heaters are long cartridge heaters designed with a conservative 25 W/Sq. In. maximum watt density. These units provide a long “gentle” heat covering a majority of the tank or vessel. They are used primarily in below grade concrete sumps, for cooling towers or to heat viscous fluids. The heaters can be specified with through-the-wall or over the- side construction in 3/4″ NPT (Series HX-761) or 1-1/4″ NPT (Series HX-762).
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Deep Tank Heaters
Deep Tank Heaters are designed to fit into a manhole of an enclosed tank or double wall tank installed either above or below grade. Often the riser is “split” to facilitate installation. Watt densities can vary from 50 W/Sq. In. for water applications to 5 W/Sq. In. for heavy fuel oils. Controls are often provided to avoid penetrating the tank elsewhere. The element bundle diameter can range from a 12″ O.D. to a maximum of 22″ O.D.
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Electric Immersion Heater Thermostats
Thermostats may be mounted inside a terminal enclosure or remote mounted (separate from the heater assembly). If using a remote mounted thermostat, be sure to order sufficient capillary tube length to permit installation.
Thermostats regulate temperature in non-critical applications. They sense temperature, within a preset range and cycle heaters on and off to maintain the set point.
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Flange Immersion Oil Heaters
Oil heaters are 12 w/in2 (heavy oil) or 20 w/in2 (light oil) element loading standard with steel flange and steel or incoloy 800 sheath material.
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Flange Immersion Water Heaters
Water heaters are 50 w/in2 element loading standard with steel flange and copper, 304 SS or incoloy 800 sheath material.
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Over-the-Side Immersion Oil Heaters
Oil heaters are 20 w/in2 element loading standard with steel sheath and fitting. Custom items available with completed specification form.
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Over-the-Side Immersion Water Heaters
Water heaters are 50 w/in2 element loading standard with 304 SST sheath and fitting. Custom items available with completed specification form.
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Pipe Insert Heaters
Open Coil Pipe Insert Heaters are designed to insert into a horizontal 3″ pipe mounted just above the anticipated sludge level in the tank and below the expected minimum operational fluid level. These units provide a low watt density over a large surface area and are used to heat sensitive fluids. Advantages include the ability to change the heater without draining the tank and to provide up to a Schedule 80 pipe wall in mildly corrosive fluids.
Heater pipes can be customer supplied or provided by Heatrex. Pipes can be welded into the tank wall or can be attached with an ANSI flange. Heatrex can also provide a weather-resistant terminal box with NPT threads attached to the end of the heater pipe.
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Quick Ship Contactor Control Panel
The HEATREX Quick Ship Contactor Temperature Control panel is a pre-engineered solution for resistive load applications. It is simple to specify, provides quick shipment, and compact packaging. The control panel is factory assembled and tested to simplify installation and operation.
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Quick Ship SCR Control Panel
The HEATREX Quick Ship SCR Control panel is pre-engineered for resistive load applications and provides fast shipment, precise temperature control, and compact packaging. The panel is completely assembled, pre-wired, tested, and ready for trouble free installation and operation.
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Railroad Tank Car Heaters
- For restoring heat lost in transit.
- To liquify material for draining or pumping out of tank cars.
- Special element design resists shock and vibration.
- Tank car or trackside controls available.
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Rectangular Flange Heaters
Bottom-Mounted immersion heaters were originally designed for use in coffee urns. However, their compact construction makes them ideal for use in steam tables, humidifiers, sterilizers and other applications requiring a very low heater profile and a short element length.
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SCR Control Panels
This fully proportional SCR system with PID temperature control is recommended for industrial heating applications which must accommodate material flow changes and provide the highest degree of accuracy for outlet temperature control.
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Screw Plug Connectors
Screw Plug connectors (stuffing boxes) are used to make a liquid-tight connection where the bulb goes through a tank wall. If the wall is thick enough, it may be drilled and tapped to receive the stuffing box thread. Otherwise, a coupling must be provided.
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Series HX-770 Flange Heaters
Series HX-770 – 4-7/8″ flange heaters, are three-element modules specifically designed for large steam or hot water boilers. They offer a simple, practical solution to two problems inherent in all electric boiler designs: element stocking and field replacement.
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Storage Tank Heaters
Adaptor box and flanged designs available. Both permit easy installation in the curved wall of a vertical tank or dished head of a horizontal tank.
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Wells
Wells are used to protect the bulb from corrosion or for mechanical support. Each well is furnished with a brass stuffing box to hold the capillary in place after installation. To order, specify catalog number and thermostat type.
