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Wednesday, February 21, 2024

Canusa FPK has been Obsoleted

 Canusa FPK - No Longer Available

Raychem Flange Seal
Covalence's FlangeSeal

     If you have been a user of Canusa's FPK (Flange Protection Kit) and you are being told that product is no longer available, the information you've been given is correct.  Now that Canusa and Covalence are "sister companies" this is a case where two product lines (Canusa FPK and Covalence FS) have been consolidated with only the Covalence Flangeseal remaining as an option.

     Flangeseal is a high expansion, fiber reinforced shrink sleeve that uses a very aggressive butyl mastic to prevent water, air, etc from getting to your flange.  It is also "re-enterable" at a later time if needed.  That is accomplished by putting a layer of cardboard over the flange itself (so the bolts don't get gummed up with the mastic material.  

     With a 66% shrink ratio built into the sleeve backing, FS is able to bridge the differences between actual Flange OD (<--- you must have this to order!) and pipe OD.  Installation is very straightforward and does not require special training.  

I'd love to discuss with you!    936/321-3333

First - you're cleaning up the flange - making sure there are no sharp edges that will potentially rip the sleeve during installation.

If the line is PE coated, lightly abrade the PE.

Wipe the area down with a solvent cleaner to removed dirt, dust and debris.

Preheat the flange area so ~140F.  Be cautious with the flame around your gaskets, etc.

If PE coated, apply a chamfer to create an angle at the PE stepdown.

Wrap the supplied cardboard around the Flange, centered.

Secure with tape - be sure the cardboard has overlapped itself.

Loosen the release paper in the Flangeseal.

Wrap the FS around the Flange (centered on the flange).

Zip it up!

Be certain your propane torch (with a regulator) is putting out a broad, bushy, yellow flame.

Secure the closure first by heating it AWAY FROM THE ZIPPER

Pat the closure down (the closures job in this application is to protect the zipper from the torch)

Begin shrinking on the flange first -- broad strokes with the torch - always moving (don't burn it!)

As the sleeve conforms to the flange - move toward the edges (shrinking 1 at a time)

Roll the overlap area with a silicon roller or gloved hand.  Do not displace mastic - but make sure the overlap area is in contact with the pipe.

Mastic flow should be evident on both sides of the sleeve (as the backing shrinks, mastic is pushed out)

As an option - you can trim off the overhanging closure strip and zipper - BUT ONLY AFTER THE SLEEVE HAS COOLED.

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