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Foam in Place Inspection Port

Foam in Place Testing & Inspection Port

At Access Plug Flange, Inc., we pride ourselves on listening to our customers' needs and being flexible enough to help provide solutions when others can't. Over the years, APF has designed inspection ports for specialized applications and worked with numerous customers to provide solutions that have become industry standards today.



Our customer had a need for an inspection port to be mounted on a tank that was insulated with a polyurethane spray on insulation without any jacketing. APF designed what we call the Flanged Spool Inspection Port Assembly (FS-1), nicknamed the 'spool'. It is a double flanged inspection port that can be mounted to the tank surface using either silicone or mastic and then have the polyurethane sprayed around it. Once the foam hardens, a permanent inspection hole was created giving the customer a cost-effective solution for future inspections.

The FS-1 can be configured to almost any thickness since we cut the sleeve prior to press fitting the flanges to it. Once the flanges have been press-fitted to the sleeve, a permanent solution is created.

Part NumberDescriptionWorking Hole Size for InspectorsMinimum Temp RangeMax Temp RangeFlange MaterialStopper Material
SP12 1/2 Spool Assembly, Aluminum Flat Flange, Red Silicone Access Plug w/Copper Sleeve, Variable Length Standoff Tube2 1/2"33°F500°FAluminumSilicone

The FS-1 comes standard in the 2 1/2", 500°F configuration but other configurations can be designed around your needs. Any of our inspection ports can be configured to work with this application. Click here to see the Installation Video

The FS-1 flanged spool inspection port carries APF's technology of the most reliable sealing mechanism on the market today. (see Inspection Ports page Advantages section)

Please contact us with your requirements today and let us show you how we can help solve your inspection port needs.

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