Flow Diagram

(pdf version available below)

Click Diagram for a Closer Look

What does it do?

lnsul-Dry keeps new insulation dry and dries out wet or frozen insulation on most types of vessels and piping, keeping it dry without the need for a costly system shutdown. lnsul-Dry uses a dry air injection system to purge existing moisture from the insulation in vessels and piping systems. Dry air injection removes moisture from beneath the vapor barrier, protects the piping or vessel from moisture migration and rusting under the insulation, while reducing thermal loss.

How does it work?

lnsul-Dry System uses compressed air (either an existing air supply or an insul-Dry air supply) that is directed to an lnsul-Dry air drying system. Using a desiccant or membrane type dryer, the moisture content will be reduced to a dew point suitable for your system. Dry air is then directed to one or more air distribution stations that monitor the airflow to each piping-run through adjustable flow meters. The air is then fed to each run through distribution lines. The dry air enters smaller injection lines that are installed in machined slots along the outside of the insulation and under the vapor barrier. The injection lines come with the porting already installed based on the length of each run. All line sizing is done with our state-of-the-art sizing program based on customer input to our design staff.

The final step involves the air purge points installed on top of the insulation. Each check valve is located at a predetermined place to get proper dry airflow throughout the vessel or pipeline. After the system is installed, dry air will flow under the vapor barrier at a very low flow rate to ensure that no moisture migrates into the piping system. In systems that already have excessive moisture, the airflow is first set at a higher rate until the dry air system removes the excessive moisture, and then dialed back to a maintenance level.

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