Guardian Premium flange insulation kit

GUARDIAN PREMIUM IS Properties Table
ASTM TEST METHOD G10 (FR4) G11 (FR5)
D149 Dielectric Strength KV/mm Short Time 29.5 ÷ 31.5 19.7
D695 Compressive Strength (Kpsi) 65 50
D790 Flexural Strength (Kpsi) 65 57
D638 Tensile  Strength (Kpsi) 50 41
D570 Water Adsorption (%) 0.05 0.10
- Temperature - Operatimg -130°C to +150°C -45°C to +200°C
- ANSI Gasket Pressure Range Classes 150 ÷ 2500 psi
- API Gasket Pressure Range API 2000 ÷ 10000 psi
- PN Gasket Pressure Range PN 6 ÷ 420

The grid shows the average values of the materials properties

 

 

Guardian Premium IS

Guardian Premium IS flange isolation kits do not use any metallic retainers, as GRE acts both as the retainer and the insulator.


The gasket can be used on RF, FF, and also RTJ flanges, replacing the inefficient phenolic Ring Joints.
Sealing is achieved either with PTFE or nitrile or fluorinated rubber.
The gasket groove is designed to prevent retainer breakage in case of overstress and to enhance the elasticity of the sealing element.


Guardian Premium IS is suitable for use up to 200°C, depending on the selected GRE, in ANSI 150 - 1500#, API 2 - 5K#, and PN 6 - 250# ratings.

 

 

Guardian Premium IPT

The Guardian Premium IPT flange insulation set uses Planiflon™ B13 as its sealing and electrical insulation element, a modified and bi-directionally oriented PTFE. This specific configuration significantly reduces the effects of relaxation and cold flow typical of PTFE gaskets, ensuring high reliability even in the most demanding applications.

Planiflon™ B13 is suitable for RF and FF flanges and offers very broad chemical compatibility, covering the entire pH range from 0 to 14, except for certain specific fluids incompatible with the filler.

The Guardian Premium IPT kit can be used up to 200°C, with ANSI 150–300# and PN 6–40# ratings. The use of GRE G10 (FR4) – Glass Reinforced Epoxy Resin Composite materials – for sleeves and washers is always recommended. Compared to other solutions, particularly phenolic ones, GRE G10 has a much lower hygroscopic factor: this ensures full sealing efficiency throughout the expected service life, avoiding malfunctions caused by mechanical load loss due to washer degradation.

 
Guardian Premium IPT