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Showing posts with label heatshrinksleeves. Show all posts
Showing posts with label heatshrinksleeves. Show all posts

Thursday, June 27, 2013

Shrink Sleeve Installation Tools

Shrink Sleeve Installation Tools

Question:  What tools are required for Covalence heat shrink sleeve installation?

Answer:  Ignoring the need to clean the pipe, Covalence heat shrink sleeves do not require
any special tools during installation.  Here is what is needed:

- A means of measuring preheat temperature.  This could range from something as 
sophisticated as a pyrometer with roller probe; to something
as simple as a temp stick.  
Means of measuring pipe temperature
An example of temp sticks for different temperatures
 - A broad flamed torch (Covalence shrink sleeves cannot be shrunk
using an acetylene torch or a welding torch).  Our torches are sold as a kit
which includes a torch with a pilot lights; a regulator with a pressure guage
and a thirty foot long hose. 
JS-2601 Torch Kit
A JS-2601 Torch Kit - available at JSI
- A long handled silicone roller.  This is used after installation to roll the overlap area
and can be used in the event that any air has become trapped (which could be
caused by poor application).  
long handled silicone roller
A long handled roller; used during heat shrink sleeve installation
(Keep in mind that the contractor or end user will need to supply their own propane tanks for installation) 

Wednesday, June 26, 2013

Heat Shrink Sleeves: Most Dangerous Installation Error

  Question:  What is the most dangerous installation error when installing a heat shrinkable sleeve?

  Answer:  I'm going to overlook things like 'failing to clean the pipe' and 'failing to preheat the pipe'.  The most dangerous installation error is an installer who simply fails to care for the bottom of the pipe.

  Pipeline spreads are often NOT pretty.

heat shrink pipeline
A fairly typical (maybe even a 'good' pipeline spread.
 As you can see, there just isn't very much room underneath the pipe.  But still, the bottom half of the pipeline must still be cleaned and preheated.  In addition, the bottom of the sleeve must be shrunk and shrunk appropriately!  This same potential problem exists for any coating of course; working a liquid epoxy to prevent icicles can be even more challenging.

In any case, anytime an inspector asks me "what should I be looking for" one of the first things out of my mouth is that he's almost certainly going to need to get his knees dirty as he'll be crouching down under that pipeline to make sure the sleeve has been properly shrunk on the bottom of the pipe (and he/she needs to be familiar with this page!)