- ISO-C1 polyisocyanurate insulation is used in applications where temperatures call between -297°F (-183°C) and 300°F (149°C).
- ISO-HT polyiso pipe insulation is applicable to applications up to 375F (190C), with intermittent exposure to 400°F (204°C.
- Phenolic pipe insulation can be utilized in applications from -292°F to +248°F.
- EPS insulation may be utilized in applications up to 167°F
Pipe insulation installation procedures differ for different temperature ranges (and operating conditions), primarily with respect to single versus multiple layers of pipe insulation, the techniques for joining adjacent polyiso insulation segments, and the types of sealants, adhesives, mastics, vapor retarders, and jackets used. Dyplast Products categorizes insulation 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: Cryogenic Pipe 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 pipe: +32ºF through Ambient temperatures (0°C through ambient)
D. Hot water pipe to low-temperature steam pipe: Ambient to 300ºF (Ambient to 149ºC), including
- Hot water insulation and steam condensate pipe insulation: Ambient through 211°F (Ambient through 99.4°C)
- High temperature hot water pipe/ Low temperature steam pipe: 212°F through 300°F (100°C through 149°C)
E. For Low or Higher-Temperature Steam pipe: up to +375ºF (190C), with intermittent exposure to 400ºF (205ºC) |
