Match Your Inspection Ports to Your Process Temperatures
APF Inspection Port Assembly Standard Installation Instructions
Installation consists of six steps with exceptions to the optional field contour, extension sleeve, and transition gasket. Also, cryogenic inspection port follows a different installation procedure for the flange installation as shown below the standard installation procedures. Click here to see the installation advantages.
Hole Saw Sizing Chart
APF ID [in] | Hole/Drill Dia. [in] |
1 3/4" | 1 9/16" |
2 1/2" | 2 9/16" |
4" | 4 1/8" |
5" | 5" |
STEP 4.1 - PERFORM THE FOLLOWING OPTIONS PRIOR TO NEXT STEP IF APPLICABLE
** Field Contour the flange for small diameter piping if needed.
** Install the Separation Sleeve at this step if needed.
** Install the Transition Gasket if needed.
Use the silicone injection holes along the face of the flange to fill any voids and to make sure you have an airtight seal between the flange and the jacketing.
**NOTE: Installers may want to use aluminum or stainless steel pop rivets in lieu of self-tapping screws as an alternate fastening method. Insert an insulation core into the inspection hole and secure the stopper in the flange. If you are installing our high temperature, all metal, inspection ports; make sure the cup in fully engaged with the locking tabs to create the seal.
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