Custom Reactors

Chemical reactions can be volatile and complex. With more than 75 years of pressure vessel experience under our belts, we can build stainless steel chemical reactors to almost any design or specification.

As an ASME approved vendor, we know how to support you to meet the regulations and quality standards you need. Consult with our Chemical equipment experts about welds, heat transfer, materials, connections, mixers and manways that will bring your project to completion.


  • 304/304L and 316/316L stainless steel construction, including all non-product contact and structural steel.
  • 32RA internal material and weld finish.
  • Half pipe heat transfer on shell and bottom, multiple zones.
  • 24” manway access.
  • Mixer
  • Sparge
  • Low chloride ceramic blanket insulation
  • Fully welded 304 stainless steel outer sheathing
  • Clean in place sprayballs designed specifically to clean your custom Reactor vessel
  • ASME Code Stamped vessel and heat transfer.

Optional Features

• A variety of internal and external material and weld finishes are available from bead blast up to mirror-finish electropolish.

• Exotic materials of construction, 2205, Hastelloy and many more. Externals and structural steel of carbon steel finish painted at our shop.

• Variety of heat transfer types including:

• Dimple in 14 gauge or 12 gauge

• Halfpipe in sizes 2”, 3” and 4” available with full through weld design for thermal cycling.

• Internal pipe coils and heated baffles.

• Manways with swing bolts, spring assist lift and safety interlock proximity switch.

• Mixer can be supplied by you but installed by Paul Mueller Company at our shop or at your project site.

• Tank flush mount valves for outlets, samples etc.

Specifications and Sizing

Work with our innovative engineers to create a reactor that is perfect for you and your facility. At Paul Mueller Company we work to meet all your needs and with our various shapes, sizes, and specifications we are confident that we will be able to make a high quality product that you will love.


Finding the right equipment that fits within your budget can be daunting. At Paul Mueller Company, we understand your needs. That’s why we offer Leasing options that give you more flexibility.

Tell us more about your needs.

Our Chemical Partners

We value collaborations with these leading chemical manufacturers. Whether a plastic that makes a medical device to change lives or a chemical reactor that is testing energy possibilities for 3rd world countries - our equipment is making a difference around the globe.

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