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Worldwide Leader in

Inspection Port Technology


The 6 Step Inspection Port Assembly Guide

Explore our videos for foam-in applications & more.

What is an Inspection Port?

How can it benefit your safety program?

An inspection port is a complementary product designed to ENHANCE your Mechanical Integrity and Safety programs in regards to non-destructive testing (NDT) and personnel safety.

Once an inspection port plug is installed on the outside of the insulation jacket of any insulated pipe, vessel, tank, or process equipment, the inspector can safely & easily get access under the insulation WITHOUT the need to remove the jacketing and insulation. This easy access allows an inspector to use a UT meter to perform a thickness measurement and also allows for visual inspection for monitoring for corrosion under insulation (CUI).

An inspection port also standardizes the thickness measurement location (TML) for all future inspections to protect the integrity of the inspection data by allowing future inspections to be performed at the same location the base line data was taken from.

See how APF's product line of quality inspection ports can enhance your safety & integrity programs.


Customer Service




Product Line

Protect your equipment

With Access Plug Flange, Inc.

Access Plug Flange, Inc. believes in high-quality customer service and proper equipment utilization. We are a stable, dependable, privately own company with a constant commitment to our customers. We supply inspection ports and labels that enhance your safety programs by providing a safe and secure way for the safety inspectors to detect and monitor insulated and non-insulated equipment.

Learn More About Us


March 3-7, 2024

AMPP Conference & Expo 2024

New Orleans, LA

New Orleans Morial Convention Center - Booth 2333

October 15-17, 2024

2024 AFPM Summit 

Hyatt Regency - New Orleans, LA

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