PETROCHEMICAL
INSULATION KITS
Insulation kits are used to limit corrosion in pipeline systems. The kits remove the possibility of the system acting as a galvanic cell and reduces the risk of galvanic corrosion when dissimilar metals are present. They are also used to isolate cathodically protected piping systems where they prevent the flow of electro-static charge.
Each insulation kit comprises one central insulating gasket, one insulating sleeve, two insulating washers and two steel washers. The gasket, sleeves and insulating washers come in various different materials with the most popular shown below.
COMMON MATERIALS
| NEOPRENE FACED PHENOLIC* | RE-INFORCED PHENOLIC* | PHENOLIC | MYLAR* | GLASS RE-INFORCED EPOXY RESIN G10 | |
|---|---|---|---|---|---|
| Component | Gasket | Insulating Washer | Insulating Sleeve | Insulating Sleeve | Gasket, Washer, Sleeve |
| Dielectric Strength (V/mm) | 500 | 200 | 140 | 4000 | 750-800 |
| Compressive Strength (N/mm2) | 270 | 270 | - | - | 450 |
| Flexural Strength (N/mm2) | 155 | 155 | - | - | 450 |
| Water Absorption (%) | 1.60 | 1.00 | 1.00 | 0.80 | 0.05 |
| Maximum Operating Temperature (°C) | 107 | 107 | 107 | 145 | 150 |
INSULATION MATERIAL PROPERTIES
NEOPRENE FACED PHENOLIC
ComponentGasket
Dielectric Strength (V/mm)500
Compressive Strength (N/mm²)270
Flexural Strength (N/mm²)155
Water Absorption (%)1.60
Max Operating Temperature (°C)107
RE-INFORCED PHENOLIC
ComponentInsulating Washer
Dielectric Strength (V/mm)200
Compressive Strength (N/mm²)270
Flexural Strength (N/mm²)155
Water Absorption (%)1.00
Max Operating Temperature (°C)107
PHENOLIC
ComponentInsulating Sleeve
Dielectric Strength (V/mm)140
Compressive Strength (N/mm²)-
Flexural Strength (N/mm²)-
Water Absorption (%)1.00
Max Operating Temperature (°C)107
MYLAR
ComponentInsulating Sleeve
Dielectric Strength (V/mm)4000
Compressive Strength (N/mm²)-
Flexural Strength (N/mm²)-
Water Absorption (%)0.80
Max Operating Temperature (°C)145
GLASS RE-INFORCED EPOXY RESIN G10
ComponentGasket, Washer, Sleeve
Dielectric Strength (V/mm)750-800
Compressive Strength (N/mm²)450
Flexural Strength (N/mm²)450
Water Absorption (%)0.05
Max Operating Temperature (°C)150
* Denotes standard materials
DIMENSIONS TO SUIT ANSI FLANGES
CLASS 150 DIMENSIONS
CLASS 300 DIMENSIONS
DIMENSIONS TO SUIT DIN FLANGES
PN10 DIMENSIONS
PN16 DIMENSIONS
PN25 DIMENSIONS
PN40 DIMENSIONS