Low Density Polyethylene (LDPE) Vessels

Low Density Polyethylene Reactors (LDPE)


LDPE, produced by the high-pressure polymerization of ethylene, is an important commercial product used in film, paper coating, injection molding, and wire/cable insulation. Autoclave is a single source for the design and supply of polyethylene production reactors. Autoclave also supplies associated equipment like Separator Vessels, Catch Pots and Pulsation Bottles for LDPE and HDPE processes.

Low Density Polyethylene (LDPE) Vessels


  • Typical operating pressures of 30,000 to 45,000 psi (2,068 to 3,103 bar) other pressures available 

  • Typical Operating Temperatures to 600°F (316°C) other temperatures available

  • 15 to 27" (381 to 686 mm) Inside Diameter and 17 to 24 Feet (4.65 to 6.56 Meters) Inside Length are typical other sizes are available

  • Double ended configuration

  • Economical threadless split clamp closure with metal "D" ring or wave ring seal

  • Direct drive agitation

  • Side ports for catalyst injection

  • ASME CE, TUV or other applicable code stamps are available 

  • Alloy Steel SA-723 vessel construction standard, other materials available

  • Electrical feedthroughs, motor spacers, rupture port sleeves, separator vessels, catch pots and pulsation bottles optional



The threadless split clamp closure of Autoclaves' LDPE Reactor is an economical design for a production process that requires very high pressures and continuous operation. Double ended for easy cleaning or access, the vertical operation of the unit enables efficient flow through processing. ASME and CE Code Stamping are available, as are custom designs to specific requirements.