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High Temperature Walk-In Ovens

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High Temperature Walk-In Ovens

For annealing, sintering, precipitation hardening, burn-off or any other high temperature processing of large or numerous parts. Constructed with an isolated inner oven to eliminate heat transfer and leakage at seams commonly found in standard panel construction. Designed and constructed for long, hard, continuous use with the temperature uniformity required for consistent results at elevated temperatures.

High Temperature Walk-In Ovens Model Specifications:

CAUTION:  Ovens processing combustible material are required by National Fire Protection Association 86 Standard for Ovens and Furnaces (NFPA 86) to have a fire suppression system.  If flammable solvents or vapors are present in an oven, OSHA requires conformance with NFPA 86 Class A Oven requirements.  A powered forced exhauster and other non-standard safety equipment must be added.  See Class A Oven Equipment for Solvent Processing resource page, reference our FAQs or our contact us us for more information.

Model Workspace Outside Dimensions*(WxDxH) Max Temp Blower Heat Input Insulation Thickness Operating Characteristics† Approx Shipping Weight
Dimensions(WxDxH) VolumeCu Ft CFM HP ElectricKW GasBTU/HR Control Accuracy Temperature Uniformity Rise Time (Electric) Rise Time (Gas)
B1-900 48" x 48" x 72" 96 75" x 94" x 92" 900°F 4,200 3 60 400,000 9" ± 0.3% ± 10°F 60 45 8,300 lbs
B1-1050 48" x 48" x 72" 96 79" x 104" x 97" 1,050°F 6,400 5 80 550,000 10" ± 0.3% ± 12°F 70 45 9,280 lbs
B1-1200 48" x 48" x 72" 96 87" x 114" x 103" 1,200°F 10,000 7 ½ 120 880,000 12" ± 0.3% ± 15°F 80 40 15,485 lbs
B2-900 54" x 72" x 72" 162 81" x 118" x 92" 900°F 5,000 5 80 600,000 9" ± 0.3% ± 10°F 80 50 9,220 lbs
B2-1050 54" x 72" x 72" 162 87" x 130" x 98" 1,050°F 7,800 5 100 880,000 10" ± 0.3% ± 12°F 80 50 10,625 lbs
B3-900 60" x 96" x 72" 240 91" x 152" x 95" 900°F 7,800 5 100 700,000 9" ± 0.3% ± 10°F 80 45 10,625 lbs
B3-1050 60" x 96" x 72" 240 97" x 158" x 98" 1,050°F 10,000 7 ½ 120 880,000 10" ± 0.3% ± 12°F 90 50 12,405 lbs
B4-900 72" x 120" x 72" 360 109" x 178" x 96" 900°F 12,500 10 120 880,000 9" ± 0.3% ± 10°F 90 50 12,955 lbs
B1H-900 48" x 48" x 72" 96 75" x 108" x 88" 900°F 5,000 5 60 400,000 9" ± 0.3% ± 10°F 60 45 8,340 lbs
B1H-1050 48" x 48" x 72" 96 81" x 110" x 91" 1,050°F 7,800 5 80 550,000 10" ± 0.3% ± 12°F 60 45 9,285 lbs
B1H-1200 48" x 48" x 72" 96 95" x 114" x 94" 1,200°F 12,500 10 120 880,000 12" ± 0.3% ± 15°F 70 40 15,480 lbs
B2H-900 54" x 72" x 72" 162 85" x 132" x 88" 900°F 7,800 5 80 600,000 9" ± 0.3% ± 10°F 80 50 9,275 lbs
B2H-1050 54" x 72" x 72" 162 91" x 134" x 91" 1,050°F 10,000 7 ½ 100 880,000 10" ± 0.3% ± 12°F 80 50 10,630 lbs
B3H-900 60" x 96" x 72" 240 93" x 156" x 88" 900°F 10,000 7 ½ 100 700,000 9" ± 0.3% ± 10°F 80 45 10,615 lbs
B3H-1050 60" x 96" x 72" 240 101" x 158" x 91" 1,050°F 12,500 10 120 880,000 10" ± 0.3% ± 12°F 90 50 12,385 lbs
B4H-900 72" x 120" x 72" 360 119" x 180" x 88" 900°F 17,500 15 120 880,000 9" ± 0.3% ± 10°F 90 50 12,970 lbs

* Outside Dimensions

  • Control panel overhang 9″ right side.
  • Blower motor overhang on rear:
  • 19″ on 3 and 5 HP motors,
  • 26″ on 7-1/2 and 10 HP motors, 28″ on 15 HP
  • Gas Models: Burner overhang 15″ right side.

† Operating Characteristics

  • Accuracy as percent of controller span.
  • Uniformity at 100°F below maximum temperature.
  • Rise Time in minutes to 100°F below maximum temperature.
  • Tests run with empty oven and minimum exhaust.
  • Performance will vary with load and application.

High Temperature Walk-In Ovens Model Details:

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Specifications for High Temperature Walk-In Ovens

MODEL B4H-900
MAXIMUM OPERATING TEMP 900°F
AIR FLOW Forced Convection, Side to Side
CONTROL ACCURACY ± 0.3%
OVEN UNIFORMITY ± 10°F
RISE TIME - ELECTRIC 90 mins
RISE TIME - GAS 50mins
WORKS SPACE DIMENSIONS (WxDxH) 72" x 120" x 72"
SHELVES INCLUDED None
NUMBER OF SHELVES MAX None
SHELF CAPACITY None
MAX LOAD CAPACITY Not Available
DOORS Manual
LOADING METHOD Cart or Truck, Floor
APPROXIMATE SHIP WEIGHT 12970 lbs
OUTSIDE DIMENSIONS (WxDxH) 119" x 180" x 88"
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Standard Features for High Temperature Walk-In Ovens

Certifications
  • UL Listed Control Panel
  • Meets the Requirements of the Following Standards:
    • NFPA 86 (Standard for Ovens and Furnaces)
    • NFPA 70 (National Electric Code)
    • FM (Factory Mutual)
    • OSHA
    • Caution:
    • When processing combustible material fire protection should be considered
    • Processing flammable solvents or vapors requires forced exhaust to provide safety ventilation. For more information see Class A Solvent Processing page at this website
Safety Equipment
  • Adjustable manual reset excess temperature interlock to turn off heat on malfunction of main temperature controller
  • Recirculating blower air flow safety switch to turn off heat on loss of recirculated air flow
  • Electrical interlock shuts off heat if power to recirculating blower is interrupted
  • Electric Heat Includes
    • Separate heating element control contactors to turn off heat on malfunction of main control contactors
  • Gas Heat Includes
    • Modulating burner for 1000 BTU per cubic foot natural gas at 6” water column pressure – propane available. Inlet 1” NPT (1-¼ “ NPT above 350,000 BTU/hr input)
    • Automatic pre-ignition purge period to clear accumulated gas or fumes
    • Push button electric ignition
    • Microprocessor based electronic flame safeguard protection to continuously monitor flame and close gas valves if flame is not present
    • 325 CFM (650 CFM at 800,000 BUT/hr input) powered forced exhauster to provide combustion venting
    • Exhauster air flow safety switch to close gas valves on loss of venting
    • Two pilot valves to guarantee gas flow to pilot can be stopped
    • High and Low gas pressure switches to confirm safe operating pressure range
    • Two main burner safety shut off valves with valve seat position indicator to assure gas flow to main burner can be stopped
    • Proof of closure switch on one main valve to prevent igniting pilot unless main valve is closed
    • Leak test station at each pilot and main burner valve to allow testing for leakage through valve
Controls
  • Digital temperature controller
  • Heat chamber temperature controller on 1250⁰F models to limit heating element temperature
  • Motor control push buttons and on-off heat switch
  • LED pilot lights
  • 5 kA short circuit current rating (SCCR)
Construction
  • Choice of
    • Recirculating air flow patterns – Combination or Horizontal air flow
    • Electric or Gas heat
    • 208 volt, 230 volt or 460 volt, 3-phase, 60 HZ – other input power available
  • All welded construction
  • Durable, electrically isolated, Incoloy tubular heating elements
  • Heat source located in heat chamber to prevent radiant heating
  • High pressure stainless steel recirculating blower
  • Full coverage supply and return duct work with adjustable opposed louvers
  • Adjustable fresh air intake and 6” diameter exhaust outlet damper
  • Isolated inner oven surrounded by 10 lbs per cubic foot density rockwool insulation to eliminate heat transfer due to through metal and hot air leakage at panel seams
  • 2” of refractory ceramic fiber covers heat chamber walls on 1050°F models; covers all inner oven walls on 1200°F models
  • 16 gauge aluminized steel interior with steel structural members at 900°F, 16 gauge stainless steel heat chamber on 1050°F models, entire 16 gauge stainless steel interior on 1200°F models
  • Insulated floor covered with steel plate (stainless steel on 1200°F models) – 4” thick on 900°F model, 6” thick on 1050°F and 7”thick on 1200°F models
  • Exclusive construction is far superior to commonly used panel construction
  • Aluminized steel exterior with Trilite Green enamel finish
  • Brushed stainless steel control panel face
  • Exceptionally heavy duty doors, hinges and door frame with explosion venting latches
  • Dual fiberglass door gasket with stainless steel spring insert; one gasket seals to inside door surface and second seals to outer oven face
  • Expansion joints on inner door surfaces to guarantee uniform sealing at all temperatures
  • Slip flashing at doorway to allow inner oven to expand without affecting door sealing
  • 3/8” thick steel front plate around doors to provide rigid sealing surface
  • Fully assembled and factory tested for temperature uniformity
  • 1 year limited warranty

Modifications & Accessories for High Temperature Walk-In Ovens

  • Programmable Temperature Controller

    Oven modification adding a programmable Temperature Controller. Microprocessor based, digital indicating, thermocouple actuated, in lieu of standard controller.

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  • Digital Timing Temperature Controller

    Modification adding a Digital Timing Temperature Controller. Microprocessor based, incorporates 99 hour 59 minute timer, starts timing temperature reaches set point and shuts down oven at end of set time.

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  • Recording Thermometer

    Accessory adding a Recording Thermometer. Thermocouple actuated, 10″ diameter circular chart, 24 hour chart rotation.

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  • SCR Power Controller

    Electrical modification adding an SCR Power Controller. Silicon controlled rectifier power controller in lieu of mechanical heating element contactors, minimizes maintenance, reduces heating element fatigue.

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  • Digital Shut Down Timer

    Accessory adding a Digital Shut Down Timer. Shuts down oven, selectable range, continuous “hold” feature.

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  • Install Customer Supplied Temperature Controller

    Modification installing a customer supplied temperature controller in lieu of standard controller.

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  • Digital Batch Timer

    Oven modification adding a Digital Batch Timer. Uniformly timing batch operations, continuous alarm with door interlock, alarm sounds at end of preset time until door is opened or timer reset.

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  • Supply Oven Without Controller

    Supply without temperature controller. Supply cutout, thermocouple, and wires only. Customer to supply and install temperature controller.

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  • Program Timer

    Oven modification adding a programmable 24 hour, 7 day timer.

    Add to quote

Custom Ovens

Custom ovens and furnaces tailored to your specific worksite and requirements

No two worksites are alike. That means your oven or furnace needs to be built to your exact specifications. Sometimes that will be an oven in our catalog. Otherwise, we will specially design for your application.

Custom Oven and furnace Info

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Industrial Equipment Made to Order

Your business has specific needs. We’ll make them work. We’ll build your custom oven or furnace to last for the long haul. Let’s talk.

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