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Engineered Solutions for Heating & Sensing

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1) FLANGED IMMERSION HEATERS

2) SCREW PLUG IMMERSION HEATERS

Screw plug immersion heaters consist of tubular elements in a threaded hex

plug. Some models are provided with a thermowell for the temperature control

sensor and variety of electrical enclosures for electrical connections. They screw

directly through threaded opening in tank walls to heat liquids, viscous fluids,

forced air, and gases by direct contact.

Immersion Heaters

Flanged Immersion Heaters, both round flange and square flange models are a

great choice for application requiring Higher wattages . Flanged immersion

heaters are designed for installation into a pipe body, tank or pressure vessel

using standard pipe size. These heaters are available in wide selection of rating, sizes and sheath

materials suitable for the heating requirements of water, air and others gases.

Flanged immersion heaters are very efficient since all energy that is generated is

dissipated directly into the medium which is being heated.

Marathon offers the broadest selection of Immersion Heaters in the industry. Industrial immersion heaters are designed for

direct contact heating of water, oils, viscous materials, solvents, process solutions and gases for many industrial heat

applications. Since all heat is generated within the liquid or process, virtually 100% energy efficiency is achieved. immersion

heaters are designed for installation into a pipe body, tank or pressure vessel using standard pipe size.

3) BOBBIN IMMERSION HEATERS

Marathon make Ceramic Bobbin Heaters are fabricated from high temperature refractory insulators in various diameters and lengths for any voltage or wattage within manufacturing limits. These Bobbin Heaters consist of elements, which are exposed partially in air for better transmission of heat. Also, when it is inserted into a thermowell, it offers a large heated area to the liquid or semi-solid to be heated.

4) CUSTOMIZED IMMERSION HEATERS

Marathon also provides CI for Tank Heating system are uniquely designed to heat

large storage tanks located above or below ground and containing highly viscous

fluids or heat sensitive materials. We offeres uniquely designed electric heating

systems for large storage tanks. The systems can be installed in above or below

ground tanks made of steel, concrete, or any other material.

MARATHONMARATHONHEATERHEATER In-Line Heaters

Marathon In-Line heaters are packaged units consisting of duct heater mounted in a thermally insulated heating chamber for efficient heating of a flowing medium by in-line or side-arm operation. Thermocouple sensors can be provided to connect to most of the controllers various from selections terminals enclose wise, sheath & vessel material, flanged connections & controls. Application include: Water Heating, Freeze Protection, heat Transfer Oil heating, Fuel Oil Heating, Steam, air available Gas heating and others variable applications.

1) FUAL OIL CIRCULATION HEATERS

Light and Medium weight Oil Heaters are ideal for temperature maintenance

and for improving flow characteristics of oils. Fuel and gas heaters are also used

for heat transfer Oils. Heavy or Fuel oil Heaters will reduce the viscosity, thereby

improving flow and process efficiency.

2) STEAM AIR GAS CIRCULATION HEATERS

Marathon circulation heaters provide a cost effective means for heating air and

common industrial gases such as Argon, helium and Nitrogen as well as gaseous

mixtures for a wide variety of industrial processes. INCOLOY elements and a

Stainless steel vessel enhance safe operation to nearly 1400°F outlet gas

temperature in air, gas or steam superheating applications.

3) DUCT HEATERS

Process air heaters/Duct heaters are employed in heating air or other gases in

ducts, autoclaves, or ovens for many industrial heat applications. sheathed

tubular, finned tubular, and finned strip elements consistently outperform gas,

oil, and open coil electric unit in both heating efficiency and safety.

Durable INCOLOY sheath elements provide for outlet temperatures up to

1200°F/650°C.

4) ESP HOPPER HEATERS

Hopper heaters for efficient removal of ash on electrostatic precipitator

normally called ESP Hopper Heaters. Due to Flue gas condensation ,Fly ash

hoppers experience 'pluggage' problems. Marathon supplies electric surface

heating system for fly ash hoppers on electrostatic precipitator in all type of

industries who face the problem of blockage in Hoppers. The blockage is so

severe that often pneumatic drilling equipment and explosives are required to

free the system. This problem, known as Flash Freezing, is extremely

inconvenient and very costly.

Due to moisture content and low temperature inside hoppers, choking &

accumulation of fly ash occurs to maintain temperature inside hoppers for

effective flow of fly ash to ash disposal system. to remove these kind of

problems, we have to use ESP hoppers heaters, so that they heat up the hopper

and hopper get clean which got blocked by dust & ash.

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1) BUNDLE ROD HEATERS

Bundle Rod heaters are the heart of heating process which involves high

temperature applications such as forging and furnace for various heat

treatments. Marathon manufactures and supplies heating elements for both

O.E.M.'s and end users with custom designed solutions. These heaters are

designed & manufactured in low voltages for faster heating in order to achieve

temperatures quickly. Genuine sourced material is used for long lasting services

which tend to reduce breakdown time and costs. We have a very successful track

record of supplying these heaters within a short span of time.

Furnace Heaters

Marathon manufactures and supplies high temperature Bundle Rod Heaters and Metallic Heating Elements for OEM’s as

well as end-users generally used for different furnaces applications including Annealing furnaces, galvanizing furnaces

etc.

2) METALLIC HEATING ELEMENTS

Mettalic heating Elements are the ones which are spirally or helically wound &

then evenly stretched to achieve desired heating length. They can be supplied

with studs & ceramic tubes of required specification.Marathon has state of the art in-house manufacturing capabilities for all metallic

element configurations. With a large inventory of materials and sizes Marathon

is renowned for its fast response to delivery requirements. Various grades of

material are available depending on the application

Tubular elements are the most versatile of all metal sheathed heaters. They can

be supplied in many lengths, diameters, sheath materials and electrical ratings.

Inherent mechanical flexibility permits forming and bending into many shapes

and sizes providing unique adaptability for the process engineer or product

designer. Various sheath material selections are available to provide suitable

operation from liquid immersion service through high temperature (871°C)

radiant heating service.

3) TUBULAR HEATERS

Marathon Silicon carbide heating elements are time trusted heating elements

and are characterized by high use temperature, superior oxidation resistance,

low corrosion, long service life, low creep, and easy installation features i.e. full

accessories

4) SILICON CARBIDE HEATING ELEMENTS

MARATHONMARATHONHEATERHEATER Component Heaters

Coil heaters are an advance concept of thermal engineering, is also known as

high performance tubular heaters or cable heaters. The basic construction of

these heaters consist of compacted MgO, high temperature resistance wire and

Chrome Nickel Steel tube. These heaters can be constructed with or without

built in thermocouples.

2) COIL HEATERS

4) MICA BAND HEATERSMica Insulated band heaters are sheathed in rust-resistance steel or in

stainless steel sheath as it provides physical strength and good thermal

conductivity. Specially selected mica grade and thickness is used to insulate

the windings, providing excellent thermal conductivity and dielectric

strength.

Ceramic band heaters are medium-to-high temperature heaters that have

648°C as a maximum working temperature. These durable heaters can have

optional in-built ceramic fiber jackets that make them energy efficient. Ceramic

band heaters are available with different terminal styles, are fully flexible, and

can accommodate holes and cut-outs.

3) CERAMIC BAND HEATERS

Marathon cartridge heater exceeds the performance and durability compared

to other cartridge heaters through refinements in swaging process, specially

designed cores, careful selection of magnesium oxide fill, nickel chromium

resistance wire, stainless steel tubing, and carefully controlled production

processes, HotRods routinely outperform other cartridge heaters in difficult

application and are available in a wide variety of diameters and configurations.

1) CARTRIDGE HEATERS

Marathon Heater flexible heaters provide outstanding performance in

applications up to 200°C under a variety of operating conditions. Properly

applied silicone rubber heater life routinely exceeds 10 years. Silicone

rubber has a high dielectric strength and is flame retardant and non-toxic.

Design versatility permits special heat profiles allowing zones of higher or

lower heat concentration as needed. Their flexible construction makes them

very easy to install on a variety of surfaces. Silicone Rubber Heaters can be

mounted to flat or curved surfaces. They are not affected by vibration,

flexing or repeated mechanical shock.

5) SILICONE RUBBER HEATERS

MARATHONMARATHONHEATERHEATERComponent Heaters

Marathon air heaters feature an open coil of high temperature resistance wire

electrically isolated in a stainless steel sheath. Because the air being heated

passes directly over the resistance wire, maximum heat transfer efficiency is

achieved. Marathon brand air heaters are used for heat staking, plastic welding,

laminating, drying, heat sealing, and any other operation where air needs to be

heated up 500°C.

6) AIR HEATERS

Marathon Mineral Insulated Heating Cables are the most rugged heating cable

in Marathon's product line. Constructed of a solid series resistor element

embedded in highly compacted mineral insulation, MI cables are built to

handle high temperature, high wattage applications. The series resistor and

mineral insulation are encased in a metallic jacket of INCONEL 600/800,

SS304/316/321 or Copper for different high temperature or corrosive

applications.

7) MINERAL INSULATED HEATING CABLES

A) SPECIAL HEATING CABLE DESIGN CONFIGURATIONS:Marathon offers customized designs in MI Heater Configurations to fulfill customer requirements. Marathon ECR

(Extended Cold Region) Heaters are examples of such special type of MI Heaters, which are manufactured with extended

cold ends from the Heating Length of the heater which suits to Critical Nuclear applications.

8) BOLT HEATERS

Marathon Bolt Heaters are used to preheat large, hollow holding bolts or studs where a high concentration of heat is

critical for bolt expansion in a short period of time. As an insertion type unit, the bolt heater is widely used in the

manufacture and servicing of heavy duty steam or other pressure equipment. It is also used to heat die blocks and large

platens and to expand adjusting bolts on mechanical or hydraulic presses.

A) CYLINDRICAL BOLT HEATERS

Cylindrical Bolt Heaters are constructed with our most efficient and highest

quality Hi-Density (swaged) Cartridge Heaters; with close tolerance fits, watt

densities of 100 watts per square inch are obtainable. The higher wattage on

Hi-Density Bolt Heaters means quicker heat- up time and minimum heat loss

to the area surrounding the bolt.

B) FLEXIBLE BOLT HEATERS

Flexible Bolt Heaters are designed to allow easy access to stud bolts with

overhead clearance restrictions. Flexible Bolt Heaters incorporate a time

proven design of 50 watts of heat per square inch.The flexible sheath allows the heater to be flexed or bent to almost any

required configuration.

MARATHONMARATHONHEATERHEATER Customized Heaters & Panels

1) CUSTOMIZED HEATING ELEMENT

In addition to many different standard heaters Marathon also offers unlimited variations in the form of customized heater designs. If your requirements call for unique physical attributes, special wattage or voltage ratings, Marathon can create a heater to fit your unique application. Many times we are able to incorporate design enhancements at little or no added cost. To help you become more familiar with our capabilities, please review photos of heater assembled below. They represent just a few ways we have helped other customers improve their process heating operations.

Customized Polymide or Kapton Heaters Customized (ECR) Mineral Insulated Heater

Customized Glass Tunnel Heater

2) INTEGRATED CONTROL PANEL SYSTEMMarathon offers control panel that integrates temperature controllers, customer input and power control system into a complete package. This precise power control allows process temperature to be controlled to ±1°C. Marathon offers customized panel sizes for unique applications.

A) SSR POWER CONTROLLING SYSTEM

B) SCR (THYRISTOR) POWER CONTROLLING SYSTEM

Solid State Relays well-suited to provide the rapid switching cycles required by PID temperature control, SSRs can switch from 10 to 75 amps up to 480VAC. Switching can be either zero cross from AC or DC input voltages, or random from DC input voltage.

Silicon Controlled Rectifier capable of zero cross or phase angle operation, or burst firing to act as a solid state contactor, SCRs offer power switching advantages not possible with SSRs. Available in ratings from 10 to 1000 amps, up to 575VAC, in 1-phase, 3-phase/2-leg and 3-phase/3-leg versions. Zero cross variable time base extends heater life and permits more accurate control. Phase angle firing permits "soft starting" loads that change resistance over time and temperature.

Marathon Heater is pleased to present our line of premium temperature sensors. We offer standard and customized thermocouples, mineral insulated thermocouples, and RTDs. We use only the highest grade materials and offer a variety of sheath materials for any environment or temperature range. All sensors are subject to rigid quality control procedures and a thorough inspection process. Expert engineering assistance is readily available for any order size, large or small.

3) TEMPERATURE SENSORS

MARATHON HEATER (INDIA) PVT. LTD. is second manufacturing unit of Marathon Heater Inc. USA. Marathon

Heater Inc. is founded in 1996, they are one of the largest high quality industrial heater manufacturer in USA.

Aim of establishing Marathon Heater INDIA is to serve faster and economical Solutions to eastern

hemisphere customer. We are using all raw material imported from USA and all of our machineries and

designing programs are designed and developed by Marathon USA.

Customer service has always been top priority at Marathon Heater and everything we do keeping this goal in

mind. That means short lead times on manufactured products.

At Marathon Heater, Good is not good enough. We are constantly looking for ways to improve not only our

products but also maintain order processing, design process and product literature.

ISO 9001-2008 Certified

About us

MARATHON HEATER (I) PVT. LTD.188A, B-169 (Part), B-188 & B-189 (A), Road No.-5, M.I.A., Madri, Udaipur, (Rajasthan.) INDIA 313 003Ph.: +91 294 3057790 Fax: +91 294 3057750E-mail: info@marathonheater.in akhil@marathonheater.in

MARATHON HEATER INC. (USA)808 Hackberry Ln, Del Rio, TX 78840, USAPh.: 830 775 1417 Fax: 830 775 4379E-mail: sales@marathonheater.com

UL & CSA Certified

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