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Chilled Water Pipe Insulation Systems


Dyplast offers complete ISO-C1® (polyisocyanurate) and DyTherm® Phenolic pipe insulation systems for equipment operating below ambient temperatures, such as chilled water pipe and refrigeration pipe. Such low-temperature mechanical insulation applications present special challenges due to the strong vapor drive (the tendency of water vapor to move toward the cold pipe). Phenolic insulation and polyiso insulation systems have been demonstrated as far superior to alternatives such as fiberglass, extruded polystyrene, or cellular glass.

The thermal efficiency of both polyiso and phenolic insulation is approximately twice that of those alternatives. Polyisocyanurate’s water absorption and water vapor transmission properties are far better than fiberglass or XPS, and approach those of cell glass.

Dyplast’s ISO-C1 is generally the most cost-effective insulation for chilled water and refrigeration systems - - both from an installed cost and long-term system efficiency. DyTherm Phenolic pipe insulation is optimal when the application must comply with the “indoor air plenum” rules of the International Mechanical Code (i.e. <25/50 flame spread/smoke development per ASTM E84).

More About ISO-C1

ISO-C1 is our Class 1 rigid foam polyisocyanurate insulation produced under strict quality control with proprietary formulations. Our ISO-C1 production line using hydrocarbon blowing agents produces polyiso bunstock with superior physical characteristics, high R-factor, and zero ozone depletion potential (zero-ODP), making it a cost-effective and environmentally friendly choice. Suitable for service temperatures between -300F and +300F, ISO-C1 is ideally suited for chilled water pipe insulation, tank insulation, and other chilled water system insulation applications - - including HVAC insulation.

ISO-C1 is highly moisture resistant, strong, durable, and lightweight. It handles, works, and installs easily. ISO-C1's low friability means it creates minimal dust. Our recommended chilled water pipe insulation system, with ISO-C1 as the base, includes the optimum vapor retarders, mastics, sealants, adhesives, and tapes to meet your specific chilled water application needs.

More About DyTherm Phenolic

DyTherm® Phenolic insulation is our comparable insulant offering that meets 25/50 flame/smoke ratings with superior thermal efficiencies. With the highest R-value to thickness ratio of commercially available insulation, no other insulations compare. Contact Dyplast Products for more information.