They go by several different names: manways, manholes, access ports, and hatches, but their function is the same. Giving your customer access to the interior of the vessel is critical for their operations. With a manway, tank maintenance such as periodic cleaning, inspection, and servicing is made easier. This maintenance will keep their vessel in peak working condition.

Paul Mueller Company manways are functional and have an aesthetic appeal that will add to the value of your tank. We offer manways that can handle atmospheric designs, pressure assemblies, and ASME code assemblies along with a wide variety of shapes and sizes. If you're not sure where to start, explore all manway models and parts at or see our Mueller Manways brochure in the "Downloads" tab below.


  • 304 and 316 Stainless Steel Grades
  • Round, Oval, Rectangle, and Cone Options
  • ASME Rated Models
  • Glass Cover Models
  • Variety of Sizes

Specifications and Sizing

To view product details, visit us at

  • Pressure Ratings
  • Replacement Parts
  • Cut Sheets
  • And More

Tank Experts Working With Tank Experts

We understand the demands of tank fabrication, to be profitable - efficiency and repeatability are crucial. We are proud to partner with tank fabrication companies all around North America to help continue the legacy of quality stainless steel manufacturing in the industry.