Coronavirus (COVID-19) Statement:

Vulcan Electric is closely monitoring the widespread impact of the coronavirus COVID-19. The health and well-being of our employees, community, customers and suppliers remain our top priority. We are following the guidance and directives of the Centers for Disease Control and other government agencies to ensure best practices and measures are taken. We continue our commitment to serve our customers during these difficult circumstances. We are managing our product manufacturing and laboratory calibration operations to ensure the best possible continued service to our many customers in food processing, beverage, packaging, pharmaceutical, laboratory, and other critical industries. Should any changes to operating conditions occur, we will provide updates to our customers and partners as situations arise.

Air Process Heaters

Close Air Process Heaters Zoom
  • High Temperature Duct Heater models incorporate rugged framework and mounting flange for bolt-in mounting
  • Nickel alloy tubular component heaters are used on all High Temperature Duct Heaters
  • All models include a terminal housing to facilitate wiring hook-up and protection
  • Flow-Through Models incorporate a 1-1/4″ diameter stainless steel exchanger tube with stainless steel connection fittings
  • Several wattage and voltage combinations are available
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Vulcan Air Process Heaters offer flexibility for numerous air and gas applications up to 1100 °F (593 °C) depending on model. Assemblies are available for direct insertion into existing duct work or as standalone flow-through tube exchangers. All units utilize Vulcan component heating elements or subassemblies.

  • High Temperature Duct Heater models incorporate rugged framework and mounting flange for bolt-in mounting
  • Nickel alloy tubular component heaters are used on all High Temperature Duct Heaters
  • All models include a terminal housing to facilitate wiring hook-up and protection
  • Flow-Through Models incorporate a 1-1/4″ diameter stainless steel exchanger tube with stainless steel connection fittings
  • Several wattage and voltage combinations are available
  • Forced Air drying
  • Temperature boosting
  • Heat treating
  • Curing
  • Spot heating

Models and Options

DUCT HEATERS - 19-1/2" (495 MM) INSERTION DEPTH - 10 WATT/SQ. IN. - TYPE VHL

480 Volt 3 PhWattsHeater Tubes qty.Mtg. Flange Width (in)Mtg. Flange Width (mm)Approx. Wt. (lb)Approx. Wt. (kg)
VHL318-2225036 1/2165.14218.3
VHL618-4450068 1/2215.94820.9
VHL918-66750910 1/2266.750.522
VHL1218-990001212 1/2317.55323.1
VHL1518-11112501514 1/2368.35825.3
VHL1818-13135001816 1/2419.163.527.7
VHL2118-15157502118 1/2469.97030.5
VHL2418-18180002420 1/2520.79440.9
VHL2718-20202502722 1/2571.510847
VHL3018-22225003024 1/2622.311851.4

DUCT HEATERS - 19-1/2" (495 MM) INSERTION DEPTH - 20 WATT/SQ. IN. - TYPE VHM

480 Volt 3 PhWattsHeater Tubes in.Mtg. Flange Width (in)Mtg. Flange Width (mm)Approx. Wt. (lb)Approx. Wt. (kg)
VHM318-4450036 1/2165.14218.3
VHM618-9900068 1/2215.94820.9
VHM918-1313500910 1/2266.750.522
VHM1218-18180001212 1/2317.55323.1
VHM1518-22225001514 1/2368.35825.3
VHM1818-27270001816 1/2419.163.527.7
VHM2118-31315002118 1/2469.97030.5
VHM2418-36360002420 1/2520.79440.9
VHM2718-40405002722 1/2571.510847
VHM3018-45450003024 1/2622.311851.4

DUCT HEATERS - 19-1/2" (495 MM) INSERTION DEPTH - 30 WATT/SQ. IN. - TYPE VHH

480 Volt 3 PhWattsHeater Tubes in.Mtg. Flange Width (in)Mtg. Flange Width (mm)Approx. Wt. (lb)Approx. Wt. (kg)
VHH318-6675036 1/2165.14218.3
VHH618-131350068 1/2215.94820.9
VHH918-2020250910 1/2266.750.522
VHH1218-27270001212 1/2317.55323.1
VHH1518-33337501514 1/2368.35825.3
VHH1818-40405001816 1/2419.163.527.7
VHH2118-47472502118 1/2469.97030.5
VHH2418-54540002420 1/2520.79440.9
VHH2718-60607502722 1/2571.510847
VHH3018-67675003024 1/2622.311851.4
Construction Details:
Heater Tubes: Hairpin shape – high temperature corrosion resistant Incoloy sheath
Number of heater tubes as per table
Width of element bundle equals flange width (noted in table) minus 3-3/4″ (95.3)
Element height is 8-5/8″ (219.1 mm) on all models
Support frame positions and supports elements
Mounting: Flange includes 1/4″ (6.4 mm) predrilled holes
Flange is 3/8″ (9.5 mm) thick steel
Flange width is as noted in table
Flange height is 12″ (304.8 mm) on all models
Insulation: High temperature insulation is included – approx. 3-1/2″ (89 mm) thk below flange
Termination: Screw and nut terminals pre-wired ready for power hook-up
Enclosure: General purpose metal housing for wiring
Custom: Custom lengths, watts, and volts are available

DUCT HEATERS - 25-1/2" (648 MM) INSERTION DEPTH - 10 WATT/SQ. IN. - TYPE VHL

480 Volt 3 PhWattsHeater Tubes in.Mtg. Flange Width (in)Mtg. Flange Width (mm)Approx. Wt. (lb)Approx. Wt. (kg)
VHL324-3337566 1/2165.14218.3
VHL624-66750128 1/2215.94820.9
VHL924-10101251810 1/2266.750.522
VHL1224-13135002412 1/2317.55323.1
VHL1524-16168753014 1/2368.35825.3
VHL1824-20202503616 1/2419.163.527.7
VHL2124-23236254218 1/2469.97030.5
VHL2424-27270004820 1/2520.79440.9
VHL2724-30303755422 1/2571.510847
VHL3024-33337506024 1/2622.311851.4

DUCT HEATERS - 25-1/2" (648 MM) INSERTION DEPTH - 20 WATT/SQ. IN. - TYPE VHM

480 Volt 3 PhWattsHeater Tubes in.Mtg. Flange Width (in)Mtg. Flange Width (mm)Approx. Wt. (lb)Approx. Wt. (kg)
VHM324-6675066 1/2165.14218.3
VHM624-1313500128 1/2215.94820.9
VHM924-20202501810 1/2266.750.522
VHM1224-27270002412 1/2317.55323.1
VHM1524-33337503014 1/2368.35825.3
VHM1824-40405003616 1/2419.163.527.7
VHM2124-47472504218 1/2469.97030.5
VHM2424-54540004820 1/2520.79440.9
VHM2724-60607505422 1/2571.510847
VHM3024-67675006024 1/2622.311851.4

DUCT HEATERS - 25-1/2" (648 MM) INSERTION DEPTH - 30 WATT/SQ. IN. - TYPE VHH

480 Volt 3 PhWattsHeater Tubes in.Mtg. Flange Width (in)Mtg. Flange Width (mm)Approx. Wt. (lb)Approx. Wt. (kg)
VHH324-101012566 1/2165.14218.3
VHH624-2020250128 1/2215.94820.9
VHH924-30303751810 1/2266.750.522
VHH1224-40405002412 1/2317.55323.1
VHH1524-50506253014 1/2368.35825.3
VHH1824-60607503616 1/2419.163.527.7
VHH2124-70708754218 1/2469.97030.5
VHH2424-81810004820 1/2520.79440.9
VHH2724-91911255422 1/2571.510847
VHH3024-1011012506024 1/2622.311851.4
Construction Details:
Heater Tubes: Hairpin shape – high temperature corrosion resistant Incoloy sheath
Number of heater tubes as per table
Width of element bundle equals flange width (noted in table) minus 3-3/4″ (95.3)
Element height is 8-5/8″ (219.1 mm) on all models
Support frame positions and supports elements
Mounting: Flanged includes 1/4″ (6.4 mm) predrilled holes
Flange is 3/8″ (9.5 mm) thick steel
Flange width is as noted in table
Flange height is 12″ (304.8 mm) on all models
Insulation: High temperature insulation is included – approx. 3-1/2″ (89 mm) thk below flange
Termination: Screw and nut terminals pre-wired ready for power hook-up
Enclosure: General purpose metal housing for wiring
Custom: Custom lengths, watts, and volts are available

DUCT HEATERS - 33-1/2" (851 MM) INSERTION DEPTH - 10 WATT/SQ. IN. - TYPE VHL

480 Volt 3 PhWattsHeater Tubes in.Mtg. Flange Width (in)Mtg. Flange Width (mm)Approx. Wt. (lb)Approx. Wt. (kg)
VHL332-4472566 1/2165.14218.3
VHL632-99450128 1/2215.94820.9
VHL932-14141751810 1/2266.750.522
VHL1232-18189002412 1/2317.55323.1
VHL1532-23236253014 1/2368.35825.3
VHL1832-28283503616 1/2419.163.527.7
VHL2132-33330754218 1/2469.97030.5
VHL2432-37378004820 1/2520.79440.9
VHL2732-42425255422 1/2571.510847
VHL3032-47472506024 1/2622.311851.4

DUCT HEATERS - 33-1/2" (851 MM) INSERTION DEPTH - 20 WATT/SQ. IN. - TYPE VHM

480 Volt 3 PhWattsHeater Tubes in.Mtg. Flange Width (in)Mtg. Flange Width (mm)Approx. Wt. (lb)Approx. Wt. (kg)
VHM332-9945066 1/2165.14218.3
VHM632-1818900128 1/2215.94820.9
VHM932-28283501810 1/2266.750.522
VHM1232-37378002412 1/2317.55323.1
VHM1532-47472503014 1/2368.35825.3
VHM1832-56567003616 1/2419.163.527.7
VHM2132-66661504218 1/2469.97030.5
VHM2432-75756004820 1/2520.79440.9
VHM2732-85850505422 1/2571.510847
VHM3032-94945006024 1/2622.311851.4

DUCT HEATERS - 33-1/2" (851 MM) INSERTION DEPTH - 30 WATT/SQ. IN. - TYPE VHH

480 Volt 3 PhWattsHeater Tubes in.Mtg. Flange Width (in)Mtg. Flange Width (mm)Approx. Wt. (lb)Approx. Wt. (kg)
VHH332-141417566 1/2165.14218.3
VHH632-2828350128 1/2215.94820.9
VHH932-42425251810 1/2266.750.522
VHH1232-56567002412 1/2317.55323.1
VHH1532-70708753014 1/2368.35825.3
VHH1832-85850503616 1/2419.163.527.7
VHH2132-99992254218 1/2469.97030.5
VHH2432-1131134004820 1/2520.79440.9
VHH2732-1271275755422 1/2571.510847
VHH3032-1411417506024 1/2622.311851.4
Construction Details:
Heater Tubes: Hairpin shape – high temperature corrosion resistant Incoloy sheath
Number of heater tubes as per table
Width of element bundle equals flange width (noted in table) minus 3-3/4″ (95.3)
Element height is 8-5/8″ (219.1 mm) on all models
Support frame positions and supports elements
Mounting: Flanged includes 1/4″ (6.4 mm) predrilled holes
Flange is 3/8″ (9.5 mm) thick steel
Flange width is as noted in table
Flange height is 12″ (304.8 mm) on all models
Insulation: High temperature insulation is included – approx. 3-1/2″ (89 mm) thk below flange
Termination: Screw and nut terminals pre-wired ready for power hook-up
Enclosure: General purpose metal housing for wiring
Custom: Custom lengths, watts, and volts are available

AIR PROCESS HEATERS- 1-1/4″ INCH DIAMETER STAINLESS STEEL- TYPE AH

120 Volt240 VoltWattsExchanger in.Exchanger mmApprox. Wt. lbApprox. Wt. (kg)
AH1AAH1B20010 1/22671.20.5
AH2AAH2B30010 1/22671.20.5
AH3AAH3B50010 1/22671.20.5
AH4AAH4B70012 1/23181.40.6
AH5AAH5B100012 1/23181.40.6
AH6AAH6B125014 1/23811.70.7
AH7AAH7B150014 1/23811.70.7
IX-6000B600013111 1/22925.5
Construction Details:
Heater: Ceramic supported high temperature nickel chromium resistance wire
Exchanger Tube: 1-1/4″ OD stainless steel tube
1/2″ NPT male fittings for inlet and outlet each end
Termination: Lead wire power connection
Enclosure: General purpose metal housing for wiring
Custom: Custom lengths, watts, and volts are available

 

OPTIONS FOR AIR PROCESS HEATERS

 

Option Code Description
WX Special Wattage
VX Special Voltage
DX Custom Duct Depths or Lengths
EB4 Moisture Resistant Terminal Housing
EB7 Explosion Resistant Housing
HW Heavy Wall “Armorwall Sheath
TC Type J or K Thermocouple
BC Bulb and Capillary Thermostat

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