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Pressure Vessels

Custom-fabricated to Customer Specifications

Fluitron offers a wide variety of customized laboratory and pilot scale pressure vessels for use as reactors, accumulators, storage vessels, process vessels, autoclaves, isostatic pressing chambers, hydrostatic test vessels, sample cylinders, etc. Our capabilities range from basic fabricated vessels consisting of pipe and standard heads, to highly engineered forged vessels. Our ASME engineering and fabrication expertise is available to you. 

Vessel Alterations

In addition to new vessels, Fluitron is also certified to alter existing ASME vessels. This allows users the option of having vessels altered while maintaining the ASME Code certification. Alterations could include simply adding a nozzle or two, or a major modification such as the addition of a heat transfer jacket. 

Our general capabilities include:

  • Welded pressure vessesl and tanks from lab scale to 500 gallons
  • Pressures from 15 to 5,000 psi for welded vessels, and to 60,000 psi for forged vessels
  • Materials including Carbon Steel, Stainless Steel, Nickel-based Alloys, and other machinable, weldable alloys
  • Closures selected for the application, including:
    • Conventional bolted flange closures, utilizing standard ANSI flanges or custom Fluitron flanges where practicle, for pressures up to 6,000 psi
    • Hinged man ways of doors for pressures to 1,500 psi
    • Threaded closures for pressures to 60,000 psi
    • Quick-opening breech-lock closures for low or high pressure vessels
    • Quick-opening pin vessels for pressures to 60,000 psi
    • Custom closures for almost any application
  • Seal designs are matched to the application, and include metal seals, gaskets, "O" rings, and self-energized seals

Fluitron Pressure Vessel        Fluitron Pressure Vessel




ASME Certified U1, U2, R

Materials of Construction

Carbon Steel
Nickel-based Alloys
Other Machineable, weldable alloys
Stainless Steel


Bolted Vessels: to 5,000 psi
Clamped Vessels: to 1,500 psi
Threaded Vessels: to 60,000 psi


Laboratory Vessels: up to 10 gal
Pilot/Production Vessels: up to 500 gal



Quick-opening Design


Vessel Construction



  • Horizontal or Vertical Configuration
  • Sight Glasses
  • Custom Openings
  • Heating/Cooling System
  • Instrumentation/Controls

Diaphragm Compressors
Reactors/Pilot Plants
Pressure Vessels
Isostatic Presses
High Pressure Pumps
Supercritical Extraction
Custom Systems
Containment Cells
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