Pikotek® VCXT™ 绝缘垫片/套件

A serrated, machined metal core insulating gasket faced with high-temperature THERMa-PUR™, sleeves, washers, metal backing washers and a Garlock 5500 spacer ring.

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功能与优势应用规格下载资源

The VCXT™ high temperature flange insulation sets create a seal and maintain electrical isolation across a wide range of seating stresses and flange classes in elevated temperature service. They can be used in load compromised connections; such as damaged and/or lined flanges and also heavily bolted connections where significant gasket stresses may be generated.

The insulating gaskets and washers have been designed and developed for use in standard pipeline flanges where both cathodic protection and high integrity sealing are required at elevated service temperatures. For non-standard bolted connections please consult your regional GPT sales manager.

功能与优势

应用

规格

典型物理属性

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功能与优势

Fire safe in compliance with API 607 and API 6FB¹⁺²
THERMa-PUR™ is suitable for sealing across a wide range of chemicals (pH 0-14) and sweet and sour gaseous and liquid hydrocarbons ³
The standard 316L core and washer metallurgy are NACE (MRO175) compliant.
High compression characteristics achieve strong seal over wide range of flange surface finishes
Exceeds temperature capability of traditional vermiculite or glass/epoxy insulation sets - 770°F⁴
Better handling/shipping integrity than mica or vermiculite based products
Sizes available 1/2" - 24" NPS
Highest temperature rated isolating product available
Wide range of chemical resistance

应用

Fire-safe flange insulation in conjunction with cathodic protection

Insulation between dissimilar metals to prevent galvanic corrosion

Wellhead isolation from inter-connected flow lines

Valve connections

Christmas Tree connections

Pump connections

Compressor connections

Mating mismatched ring-joint to raised-face flanges (VCFS will seal in ring-joint, raised-face and flat face/slip-on flanges)

Prevents fluid trap corrosion between ring-joint (RTJ) flanges where high concentrations of CO2, H2S and other aggressive hydrocarbon media are present

Eliminate turbulence and flow-induced erosion between ring-joint (RTJ) flanges.

A better option for steam applications than GRE

规格

Operational pressure range: Full vacuum to ASME B16.5 1500# API
Maximum Operating Temperature Range: -328°F to 770°F (-200°C to 410°C)

Note: Electrical values are based on laboratory conditioned samples in laboratory conditions. Exposure to moisture or elevated temperature will change values.

典型物理属性

Insulating Gasket & Washers

Core Thickness Facing Thickness: 3.2mm/.125” (316SS Core); 1mm/.040” (x2) (Facing)
Factor (m) ASME Minimum: 4.00
Seating Stress (y): 3625 psi (25 MPa)
Dielectric Strength (ASTM D149a): 3.937 kV/mm

Mica Insulating Sleeves

Maximum Temperature Dielectric Strength: +500˚C 20.0 kV/mm

Mica Washers

Stainless Steel: 0.125” thick

Other washer material can be provided to suit the application

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