Years of MHI manufacturing technology in high temperature and pressure. From KW to MW systems.  High pressure ASME rated enclosures. CE or UL ratings as required.

MHI Airtorch® products offer multi-stage heating. This is particularly important for several unique gas heating solutions for climate change solutions with reactive gases.

2 Bar- 60 Bar or higher,  ASME VIII standards when required. Sleek 6 MW units. Third party certification provided.  Process Air Heaters. Other standards also provided.

For units with low-pressure rating units in the Mega watt range or for high wattage compact duct heaters please click here.

Use the Airtorch® for a future with low CO2 (greenhouse gas) emissions and abundant renewable energy supply.  Heat gases like  H2, CH4 and even NH3 for Critical applications. 

  • Double Walled or Insulated Internally air/gas cooled.  Reduces flange stresses. Choice of natural cooling or external-air or water-cooling.
  • ATEX compliance for combustible gas use such as hydrogen or methane (natural gas).  Process Gas Heaters.
  • 1500 lb alloy flanges

Please contact MHI (click here)

Picture of a very compact 2 MW GTA with special vertical configuration up to

Models, 600°C, 700°C, 800°C, 900°C, 1000°C, 1100°C, 1200°C.

Compare features with any other manufacturer.

Vertical configurations

18 Bar

18 Bar

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Compare Process Heat Systems.  Compactness, Outlet Temperature Capability,  Ease of Use and and Efficiency, Inlet Temperature Flexibility, Ratings, Value and Service.

Airtorch® System Introduction
Temperature Lower Power (1-12 kW) High Power (36KW -4400 kW)
600-900°C LTA, VTAMTA925, LSH, MW range GTA-900-  Models
900-1000°C (Custom) GTA-1000- Models
1000-1200°C DPF Models, SH GTA-1200- Models
High Pressure Enclosures Up to 1200°C

GVTA, GTA units with MHI controls offer rapid power reduction or enhancement as required, temperature forgiveness and over-temperature thermocouples along with process thermocouples

ASME codes Section VIII Div.1. Use in test bed facilities for jet engines to propulsion engines.

GVTA and GTA MODELS (High Pressure) * Air, inert, and non-combustible gas ready * Shown below is the typical configuration for a 60kW- 400kW GVTA Note that the basic configuration follows the MVTA style or VTA style depending on temperature and pressure
GTAProcess GAs Heater

Airtorch Saddles


GTA-MW-40BAR  with complex hot inlet and outlet



Special high value liquid heaters

 GVTA or GTA with Blind Flange Shown Above

GTA / GVTA are ideal for demanding high-pressure applications such as:

  • high pressure engine sensors and exhaust
  • jet engine test stands
  • reactors (industrial preheating)
  • combustion systems
  • simulation testers
  • MVTA, GVTA and GTA are often used for combustion (simulation)
  • more applications…..Smartpower™ device

Low maintenance devices. These units are easy to service.

MHI provides very important warranties which cover all parts even heaters. Attractive service contracts are offered where required.

Low Power HighPressure Enclossure High P and High T Airorch 

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Feed-troughs are sealed and marked for phase

GVTA with (HI) opens so many testing possibilities.

GVTA with High Temperature Flange. Several protection levels

Typical Sensors Located Inside of GVTA


 Please Contact MHI for details as this is a customized product).

Please specify pressure.

Model Number Power Maximum Temperature
GTA925-02-3(PV) 3 Bar 2 kW 925°C
GTA925-04-6(PV) 6Bar 4 kW 925°C
GTA925-12-6(PV) 6Bar 12 kW 900°C/1000°C
GVTA-900-60-SH-PV 60 kW 900°C/1100°C
GVTA- 1000-120 -SH 30-120 kW Turn Down 900°C/1100°C
GVTA- 900-3000-THN-PV 300- 3000 kW Turn Down 900°C/1100°C
GVTA- 1000-2900-THN-PV 300-2900 kW Turn Down 900°C/1000°C
GVTA- 1000-6000-THN-PV 300-6000 kW Turn Down 900°C/1200°C

New GTA-DPF models to 1100°C

GVTA and GTA models are rated for high pressure.

GTA-DPF Models for 1100°C and 1200°C

1-15 KW Single or Three Phase 240/400/480/600V 50/60Hz

Model # Power
GTA-DPF -3-1100 (DNA) 3 Bar Single Phase  MVTA DPF 1100 Hot Air 1200C 3kW
GTA-DPF-10-1100 (DNA) 3 Bar Single Phase 10kW
GTA-DPF-15-1100 (DNA) 3 Bar 3 Phase 15KW

All GVTA models discussed on this page are examples only. Exact specifications are quoted as per customer requirements. Temperatures are rated at standard t/c locations. However, typically users have indicated very little temperature drop within extended piping. GVTA models accept high pressure inlets.

Pressure drop: Very Low. MHI offers DirectFlow™ Airtorch models. MHI uses its combined thermal knowledge across diverse equipmet offerings to optimize and provide low friction flows.

Choice of Temperatures. Choice of inlet three-phase voltages 208, 220, 240, 380, 440, 480 or 600V.  Choice of turn down ratios.   Please discuss with MHI.

Duct Heater

Duct Heater

Duct Heater High Power High Temperature  

* Normal Flanged (GVTA) for 4-28″ diameter pipe (GVTA) or blind (subject to actual quoted specifications) ** Normal flanged for 3-8-28″ diameter pipe or blind (subject to actual quoted specifications).  In-line VTA high pressure models have in-line flanges as per code.

UL and cUL rated Panels from MHI
TRIPAN & RPAN3 (3 units shown)

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New recommended models for combustible gases  Models CGH-KW-(XPV)-(YPV).

Fans are employed when the drop in pressure of the system is no greater than approximately 50 in. w.c. (50 in. w.c./inches of H20 is approximately 1.8psig).   This condition remains true even when the fan can output large CFM flows. Blowers are considered in circumstances where larger pressure drops are present. If inlet pressure is one atmosphere choose from VTA or MVTA Selection Guide Airtorch™ (DPF, LTA, VTA, GTA, MVTA925, MVTA)

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