NGA TB-1601-24 PDF

While the benefits of using capillary tubes are straightforward, there are numerous issues when considering their use including:

• 1) Magnitude of elevation change to require use
• 2) IGU pressurization due to temperature difference
• 3) Use with insulating gases
• 4) IGU sizes and aspect ratios
• 5) Glass thickness, type and coatings
• 6) Glazing space thickness
• 7) Short term (in transit) vs. long term (installed) elevation and/or temperature changes
• 8) Types of edge seal construction
• 9) Multiple-cavity IGUs (triples, quads, etc.)
• 10) Proper IGU design and fabrication for use of capillary tubes