ISO-C1 Service Temperatures

ISO-C1 polyiso insulation is used in applications where temperatures call between -297°F (-183°C) and 300°F (149°C). Installation procedures differ for different temperature ranges (and operating conditions), primarily with regard to single versus multiple layers of ISO-C1, the techniques for joining adjacent polyiso segments, and the types of sealants, adhesives, mastics, vapor retarders, and jackets used. Dyplast Products categorizes service temperature ranges into four categories (A - D) that generally define the installation methodologies:

A. Cryogenic Temperatures: -450ºF to -101ºF (-267.8ºC to -73.9ºC), including

• Traditional Cryogenic Temperature Category for Polyiso-based installations: -297°F through -101°F (-183°C through -73.9°C).
• Note: There is a "Special" Polyiso Cryogenic Temperature Category for which Dyplast does not define installation guidelines due to the complexity of design considerations: -450°F through -298°F (-267.8°C through -184°C) [Note: Insulation systems in this range of temperatures require diligent engineering expertise.]

B. Refrigeration/freezer/glycol/brine Temperatures: -100ºF to +31ºF (-73.3ºC to -0.6ºC), including

• Refrigeration/brine: -100°F through -40°F (-73.3°C through -40.0°C).
• Refrigeration/glycol: -39°F through +31°F (-39.4°C through -0.6°C) .

C. Cold or chilled water: +32ºF through Ambient temperatures (0°C through ambient)

D. Hot Temperatures: Ambient to 300ºF (Ambient to 149ºC), including

• Hot water and steam condensate: Ambient through 211°F (Ambient through 99.4°C)
• High temperature hot water/Low temperature steam: 212°F through 300°F (100°C through 149°C)

Note: These temperature categories are not meant to be definitive. A qualified insulation engineer/designer may define categories differently, depending on the application. Clients should consult professional insulation engineers prior to designing insulation systems for their particular applications.