Removable thermal insulation covers are used to cover valves, flanges, instrumentation panels, and other components, as well as process piping. Unlike permanent hard insulation, soft insulation covers have the advantage of being removable and reusable, making them the insulation of choice for components that need to be accessed from time to time for maintenance and inspection.
While removable thermal insulation covers are typically one of the last items to be installed before a facility goes into production, they are a critical component when it comes to site safety and system stability.
Valves, flanges, and other components left uncovered can result in:
Process piping and equipment left without a properly designed thermal insulation cover can freeze and fail to properly operate.
Removable insulation covers are typically constructed in 3 layers1. The table and photos below illustrate the construction and materials used in a standard removable insulation cover. Note that for more demanding and unique applications Firwin offers a wide range of alternative materials and construction.
Layers | Material | Temperature Limit | Function | |
Outer | Silicone Impregnated Fiberglass | Grey: 500º F (260º C) | Protective Cover | |
Teflon Coated Fiberglass | Grey: 550º F (287º C) | |||
Middle | Fiberglass | Firwin 1200: 1200º F (649º C) | Insulation Media (1 Inch)2 | |
Inner | Silicone Impregnated Fiberglass | Grey: 500º F (260º C) | Contains Insulation Media | |
Teflon Coated Fiberglass | Grey: 550º F (287º C) |
Most Thermowrap blankets are designed for applications under 500°F / 260°C; however alternative insulation materials are available for temperatures ranging from below zero all the way up to 2100°F+. Fastening methods include straps, lacing wire, cords, buckles, and Velcro.
Thermowrap blankets feature high temperature sewn construction and incorporate flaps, closures, and cutouts to provide easy access to ports and controls.
Heat/Energy Conservation
Heat Retention / Maintenance
Personal Protection
Sound Attenuation
High Temperature Sewn Construction
Straps
Lacing Wire
Draw Cords
Buckles
Velcro
Flaps
Closures
Cutouts
Outer
Middle
Inner
Silicone Reinforced Fiberglass
Teflon Reinforced Fiberglass
Varies Depending on Temperature
High Heat
Caustic Substances
Cold (Subzero)
Subzero all the way to 2100°F+
Typically ½ in. to 2 in.
CAD / 3D Modeling
Automated Cutting
Sewn
Field Measurement
Field Installation
Project Management
Private Labeling
Prototype to Large Runs
2 to 3 weeks
Rush Service Available
Valves
Flanges
Vessels
Manways
Panels
Pumps
Tanks
Turbines
ISO 9001:2015