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1100C Three Zone Super-Alloy High Pressure Tube Furnace w/ Gas Flow Control - OTF-1200X-HP-III-80-GF

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Item Number: OTF1200XIIIHP80GF


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OTF-1200X-HP-III-80-GF is a high-pressure tube furnace with three heating zones and gas flow control system as well as a protective frame. The processing tube is made of Ni-based superalloy with 50 mm ID, which can be heated to max.1100°C under high-pressure of both oxygen and inert gases with controlled flow rate.   The furnace originally is designed for processing Fe-based superconductive material, also can be used for exploring new generation oxide ceramic as a compact HIP.



  • Splitable Three heating zone tube furnace with air cooling layer
  • High quality fibrous insulation and reflective coating for max. energy saving.
  • Power:  208 - 240VAC 50/60Hz , 4KW max.  
Heating Zone
  • Three heating zones:   150mm + 150mm + 150 mm
  • Total heating zone length: 450mm 
  • Constant temp. zone: 300mm ±5°C
    Working Temperature
  • 1100°C max.for < 1hr  
  • 1000°C for continuous
  • Heating rate: ≤10°C/min

Temperature Control
    • Three precision digital temperature controller with 30 segments programmable
    • PID control method with the protection of over-temp. and a thermal couple broke
    • Temperature stability: ±1°C
    • PC control software and laptop computer are included for PC operation
    Process Vessel  &
    Safety Frame             
    • The pressure vessel is made of Nickel-based superalloy GH747 (Click to download GH747 nickel-based alloy datasheet)
    • Vessel size: OD 85 x  ID 50 x  Length 1000 (mm) 
    • The pressure vessel is located inside a steel frame to avoid flange flying out by accident ( see picture below ) and ensure safe operation.
    • Optional: torque wrench is available here to avoid over-tighten the flange bolts.
    • Warning: Never put a sample inside tube directly without crucible or isolated foil to avoid sample react with tube alloy.

      Working Pressure vs. Working Temperature
      • 140 Bar max. at  800°C
      • 80 Bar max. at  900°C
      • 40   Bar max. at 1000°C
      • 2.5  Bar max. at 1100°C
      • 1.2 Bar Max. at 1150 °C
      • Never heat up above 1200°C

      Working Gases
      • Inert gas and oxygen
      • No hydrogen or any flammable gas

      Flange and  Fitting
      • Two CF type flanges are weld with female 1/4"NPT fitting to connect the high-pressure tube
      • 2 pcs Copper o-rings are included  ( spare copper O-ring is available as consumable )
      • One pair of water cooling ring, made of copper tube, is installed on two ends of the tube ( > 16 liters/min water flow is required)
      • One 16L/min flow rate recirculating water chiller is included as a cooling system to save water.  

      Gas Flow System

      • The gas control system is built in a heavy-duty mobile table under furnace and safety frame 
      •  Three pressure sensors and digital displays are installed to monitor furnace pressure for gas inlet, inside tube and gas flow end separately
      •  One high-pressure mass flow controller is a built-in gas outlet to control gas flow rate with max. 10Mpa working pressure and 500 MCC flow rate  laptop via included software for remote monitoring and controlling
      • Three adjustable pressure release valves are installed to ensure safety.  The valve will release gas when the pressure reaches the setting point.
      Dimension & Weight
      • Dimension:  1200 L x 600 D x 1540 H mm  (includes furnace, pressure control table, and safety frame
      • Net weight:   180 kg
      Operation Instruction
      Compliance and Warranty

      • CE certified
      • NRTL, CSA, and ASME certification are available upon request at an extra cost.
      • One-year limited warranty for lifetime support
      Application Notes
      • Hytort Application, named Hydroretorting of Shale Oil is a process developed by IGT to double the yield of shale oil and hydrocarbon gases. MTI High-Pressure furnaces with Ni-based superalloy tube is an ideal tool for conducting related experiments. Please click underlined to view the research paper.
      Safety Notes
      • Ni-based Superalloy ( Waspaloy or equivalent) is a reliable processing tube that can be used under high temperature and high pressure. It has excellent ductility and tensile property so only creep deformation happens under an overpressure destruction test and is followed by a crack formed (usually at the hot zone at the center of the tube) to release the pressure. Brittle fracture won’t happen in the overpressure destruction test which means no tube explosion will happen under overpressure of inert gas or safe gas or under other accidents causing overpressure of inert gas or safe gas.
                  The pics show a Ni-based Super-alloy processing tube under an overpressure test
      • Warning:  
      • Never put a sample inside the tube directly without a crucible or isolated foil 
      •  For the use of flammable, toxic, or corrosive gases, you must contact the MTI engineering group for a consultation to know all the prerequisites and precautionary measures.
      • A two-stage pressure regulator must be installed on the gas cylinder to limit the pressure to below 3 PSI for safe operation. Please click here to learn how to install the gas regulator.
      Optional Accessories
      • To measure the electric properties of thermoelectric ceramics under high pressure & temperature conditions, please order an alumina testing fixture and high-pressure electrical feedthrough (10Mpa Max.) with the furnace (additional fee will apply).


        Tube Furnace main machine & operation manual
        Processing vessel
        High-pressure flange w/ positive pressure sensor
        Vacuum flange KF40 and KF25 connector  
        1.5 meter long, 1/4" high-pressure tubes are included for connecting to gas tank and gas-inlet furnace tube conflat flange for positive pressure or vacuum
      EQ-KJ5000 Circulating water chiller
      KF-Valve-D40 KF-40 right-angle valve
      KF-Clamp-D40 KF-40 quick clamp
      KF-Clamp-D25 KF-25 quick clamp
      KF-BF25 KF-25 Blank flange fittings
      ORing-Cu82 Oxygen-free copper gasket
      FLG-kit-2 Furnace hook
      PC control software and interface and brand name Laptop computer 1

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