PGE Flange Isolating Gasket Kit
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What is PGE Flange Isolating Gasket Kit?
The PGE flange isolating gasket kit was designed to give operators an alternative to the failure prone phenolic-based isolating gaskets. The unique design of the PGE flange isolating gasket kit incorporates patented overlapping and offsetting seal grooves. The purpose of this design is to break each layer of laminate within the gasket itself, thereby creating a barrier through which fluid and gas cannot migrate. The sealing ring element can be any elastomeric material, as well as more sophisticated spring-energized PTFE lip seals. As a result of this advanced seal design, maintenance-free flange isolation and flange face corrosion mitigation are achieved economically. Depending upon the sealing element selected, the PGE flange isolating gasket kit is rated for most hydrocarbon and water service applications.This PGE flange isolating gasket kit is suitable for use in raised-face and flat-face flanges in ANSI Class 150, 300 and 600 service (or equivalent). In addition to providing electrical isolation, the gasket is excellent for isolating flanges made of dissimilar metals or where prevention of flange face corrosion is desired.
Why Use a PGE Flange Isolating Gasket Kit?
The PGE flange isolating gasket kit is a type gasket which has high-reliability and low-pressure sealing system, it provides excellent electrical isolation for cathodic protection systems and protects against flange face corrosion and flow-induced erosion, the PGE flange isolating gasket kit is available in ring (type F) style or full-face (type E) style and it is the superior sealing solution for low-pressure (ANSI class 150, 300 and up to 600) service. It has Low required bolt loads. PGE flange isolating gasket kit is sized to the bore, which protects flange faces from media-induced corrosion and flow-induced erosion. It is easy to instal, make up and removal.Applications
The PGE flange isolating gasket kit is an excellent choice for isolating distribution lines and transport lines for gas, oil and water. Because of the PGE flange isolating gasket kit has near zero creep relaxation, it performs well in heat exchangers, applications with high vibration or excessive thermal cycling.Gasket Material Properties
Glass-Reinforced Epoxy NEMA grade G-10
Compressive Strength: 66,000 PSIDielectric Strength: 800 VPM Max.
Continuous Operating Temp: 150° C
Water Absorption: 0.10
Flexural Strength: 52,000 PSI
Tensile Strength: 32,000 PSI
Glass-Reinforced Epoxy NEMA grade G-11
Compressive Strength: 50,000 PSIDielectric Strength: 550 VPM Max
Continuous Operating Temp: 200° C
Water Absorption: 0.20
Flexural Strength: 57,000 PSI
Tensile Strength: 41,000 PSI
Insulating Sleeve Materials
|
Sleeve Material |
Dielectric Strength |
Low operating temp |
Max operating temp |
Water Absorption |
| Mylar | 500 vpm | -59°C | 149°C | 0.8% |
| Nomex | 500 vpm | -54°C |
232°C |
- |
| G7 |
350 vpm |
-196°C | 232°C | 0.07% |
| G10 | 550 vpm | -128°C | 150°C | 0.1% |
| G11 | 550 vpm | -45°C | 202°C | 0.1% |
Insulating Gasket Washer Material
|
Sleeve Material |
Dielectric Strength |
Compressive Strength |
Tensile Strength |
Water Absorption |
|
Phenolic |
500 vpm | 25000 psi | 20000 psi | 1.6% |
|
Mica |
400 vpm | 30000 psi | 32000 psi | 0.01% |
| G7 |
350 vpm |
40000 psi | 25000 psi | 0.07% |
| G10 | 550 vpm | 65000 psi | 50000 psi | 0.1% |
| G11 | 550 vpm | 50000 psi | 43000 psi | 0.1% |
Steel Washer Materials
The materials usually are zinc plated carbon steel, also can be stainless steel 304 or 316 materials. Sometimes for special application, the steel washer can be HCS with X37 coating.
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