MicroFiber Glass Fiber Pipe Insulation, Pre-formed Pipe Type

MicroCover

MicroCover glass fiber insulation is designed for hot pipes with temperatures up to 450°C to retain heat within pipes and protect workers from direct contact with hot surfaces. MicroCover products are straight tubes with a center hole that fits steel or copper pipes. Each section is 1 meter long for easy pipe length calculation.

Operating Temperature

MicroCover glass fiber insulation has a wide operating temperature range of -18°C to 450°C. It’s typically used for high-temperature applications due to its relatively stable thermal conductivity at higher temperatures.

Thermal conductivity

Thermal conductivity is crucial for hot water pipe insulation. Lower thermal conductivity means thinner insulation can be used, reducing product cost. Glass fiber insulation is suitable for pipes below 450°C due to its low and stable thermal conductivity.

MicroCover Thermal Conductivity Table

Hot Surface (°C)	Cold Surface (°C)	Mean Temperature (°C)	Apparent Thermal Conductivity (W/m·K)
55.60	20.48	38.04	0.03246
134.58	24.11	79.35	0.03697
213.25	28.12	120.69	0.04146
293.95	33.08	163.52	0.04727
374.69	38.60	206.65	0.05456
454.33	44.83	249.58	0.06356

Water Vapor Permeability

Water or vapor permeability is crucial in hot pipe systems. After insulating pipes, a jacket is installed to protect the insulation and prevent water or rain damage.

If the jacket leaks and water penetrates to the pipe surface, steel pipes can develop red rust when exposed to water and moisture. If left untreated, this can lead to corrosion over time.

Glass fiber insulation for pipe systems incorporates innovations to prevent water penetration. When rain falls or water drips on the insulation, it forms droplets on the surface, similar to a car windshield coating in rain. The water doesn’t adhere to the surface and evaporates naturally.

Insulation Thickness Selection Guide

MicroFiber insulation manufacturers have designed this table for quick and convenient insulation thickness selection:

Economically Appropriate Insulation Thickness

Pipe System	Fluid Temperature Range	Pipe Size
		< 1″ (< 33 mm)	1.5″ – 2″ (42 – 60 mm)	2.5″ – 4″ (73 – 114 mm)	5″ – 6″ (140 – 168 mm)	8″ – 12″ (219 – 324 mm)
Hot Pipes (Steam, Hot water)	152 – 238
High Pressure		1.5″ (38mm)	1.5″ (38mm)	2″ (50 mm)	2.5″ (63 mm)	3″ (75 mm)
Medium Pressure	122 – 151	1.5″ (38mm)	1.5″ (38mm)	2″ (50 mm)	2″ (50 mm)	2.5″ (63 mm)
Low Pressure	94 – 121	1″ (25 mm)	1.5″ (38mm)	1.5″ (38mm)	2″ (50 mm)	2″ (50 mm)
Low Temperature	49 – 93	1″ (25 mm)	1″ (25 mm)	1.5″ (38mm)	1.5″ (38mm)	1.5″ (38mm)
Condensate	30 – 50	1″ (25 mm)	1″ (25 mm)	1″ (25 mm)	1.5″ (38mm)	1.5″ (38mm)

Product Size Table

Pipe Size (NPS)	Internal Diameter of Pipe Insulation	Insulation Thickness (mm)
0.5	22	25, 38, 50, 63, 75, 100
0.75	27	25, 38, 50, 63, 75, 100
1	34	25, 38, 50, 63, 75, 100
1.25	43	25, 38, 50, 63, 75, 100
1.5	49	25, 38, 50, 63, 75, 100
2	61	25, 38, 50, 63, 75, 100
2.5	74	25, 38, 50, 63, 75, 100
3	90	25, 38, 50, 63, 75, 100
3.5	102	25, 38, 50, 63, 75, 100
4	115	25, 38, 50, 63, 75, 100
4.5	128	25, 38, 50, 63, 75, 100
5	143	25, 38, 50, 63, 75, 100
6	170	25, 38, 50, 63, 75, 100
7	196	25, 38, 50, 63, 75, 100
8	221	25, 38, 50, 63, 75, 100
9	246	25, 38, 50, 63, 75, 100
10	275	25, 38, 50, 63, 75, 100
12	324	25, 38, 50, 63, 75, 100

Technical Data Table

Features	MicroCover	Test Standard
Operating Temperature	-18°C – 450°C	ASTM C 411
Maximum Surface Temperature	-20°C – 116°C	ASTM C 1136
Density	64 kg/m³
Water Vapor Absorption	< 1.0% at 49°C, 95% RH	ASTM C1104
Mold and Fungus Growth	Does not promote mold and fungus growth	ASTM C665
Surface Burning Characteristics	Flame Spread < 25 Smoke Development < 50	ASTM E84