PIKOTEK FLANGE ISOLATION GASKET - PSI Products
PIKOTEK FLANGE ISOLATION GASKETLINEBACKER WITHPATENTED SEALINGELEMENTVCS/LINESEALTM FORELECTRICAL FLANGEISOLATIONVCFS TM IS THE WORLDWIDEMOST FREQUENTLY USEDFLANGE ISOLATION GASKETWITH THE API 6 FB FIREPROVING TESTWWW.PSI-PRODUCTS.COM187
LineBacker Flange Isolation KitsGENERAL INFORMATIONIndirect bolt force loadFFFFLineBacker seals utilize a patented rectangular sealing element, in combination with an unique groove design to effectively sealand insulate flanges of all types. With the unique “quad” ring design, an elastic memory is given to the elastomer. Materials such asKel-F, polyamide, PTFE (teflon) and vinyl are also available as sealing elements which considerably increases the available optionsfor adapting sealing materials to applications and environmental conditions. This greater variety of materials also provides excellenttemperature and chemical range compatibility. The LineBacker’s “m” and “y” factors are close to zero, thus enabling the creation ofa positive sealing without high bolt loads, which are present with flat gaskets.LineBacker isolation gaskets can be manufactured in anycommon diameter.Various LineBacker seal retainers and sealing rings can be usedfor special applications.PSI’s unique sealing elements provide an elastic memory to awide assortment of materials.LineBacker gaskets can be ordered individually.Properties The isolation is a high-quality seal. It functions as an electricalseparation point and prevents contact corrosion. Prevention of flange leakageGuards against blowoutsUsable with any type of flangeThe sealing material is matched to operation conditionsLowest possible bolt force and compressive loadIncreased gasket lifeThe GLV-UniSeal seals are available as an alternative for DVGW (gas) andKTW (potable water) approval.* PGE upon request !188
LineBacker Flange Isolation KitsTECHNICAL INFORMATIONGeneral physical LineBacker data & max. temperature limitsASTMTest methodPlainPhenolic**G-3 High sG-11Epoxy/GlassD149Dielectric StrengthVolts/Mil. (Short Time)500550350 – 400550550D659Compressive Strength (psi)25.00050.00040.00065.00060.000D229Water Absorption (%)1.60.70.070.040.07D257Isolating ResistanceMeg Ohms40.00046.0002.500200.000200.000D790Flexural Strength (psi)40.00046.0002.50065.00062.000D638Tensile Strength (psi)20.00042.00025.00051.00042.500D732Shear Strength (psi)10.00018.00020.00021.00022.000Temperature RangeDegrees C-54 to 104 C-54 to 200 CCryogenicup to 232 CCryogenicup to 150 CCryogenicup to 200 C* on request** G-7 material should not be used with hydrocarbonsSeal Element Temperature LimitsNitrileEPDMVitonTeflon-40 up to 121 C-54 up to 149 C-29 up to 177 CKryogen up to 232 CIn order to determine a gasket’s overall temperature range,temperature limits of both, retainer and sealing element, haveto be considered.To order LineBacker sealing/isolating gaskets please indicate the following:1. Pipe Size2. Pressure Rating up to class 600/PN 100 (ANSI, DIN, API)3. Type of flange gasket (LineBacker )4. Retainer material5. Sealing element version6. Gasket type (type E or F)7. Flange type (weld-neck, slip-on, RTJ, etc.)Dichtung Typ E (FF)8. Quantity9. For pipe sizes greater than DN600 please contact PSIPerformance data and technical information provided hereinis intended for guideline purposes only. Suitability of productconfiguration for specific applications must be determined byend-user.Dichtung Typ F (IBC)189
LineBacker Flange Isolation KitsTECHNICAL INFORMATIONSuggested Flange Isolation Material CompatibilityMediumAcetoneAirAmmonia dryAmmonia (wet)***BleachButylene (Butadiene)Carbon dioxideCaustic soda (NaOH)CryogenicEthanolEthylene (Ethene)Fuel oilNatural gasSour gasPetrolHydrogenJet fuelLNG liquid gasMercaptaneMethanolNitrogenOil, crudeOxygen**PentanePropanePropyleneSewageSpent liquorSteamStyreneSulphur (molten)TolueneWater (hot)Water (potable)Water (sea)White liquor**********Seal RetainerSealing RingTemperature Range lonTeflonTeflonTeflonNitrileConsult PSI Products rile oder TeflonVitonVitonTeflonConsult PSI Products GmbHTeflonTeflonViton or TeflonEPDMEPDMEPDMTeflon0 to 27-40 to 107-54 to 1040 to 380 to 270 to 380 to 10G-10G-10G-10G-10G-10-184 to 1380 to 380 to 27-29 to 138-40 to 104-29 to 104-54 to 107-40 to 121-29 to 107-184 to 38-29 to 270 to 38-40 to 104-29 to 138-54 to 1210 to 270 to 270 to 27-29 to 1380 to 380 to 270 to 1380 to 66 79 to 1380 to 1380 to 138 27 to 138G-7 material should never be used with hydrocarbonsOrganic materials that will feed a fire if a leak occurs and an ignition source is next to it.Ammonia (wet) - Data up to 100 F ( 38 C) only (same materials as dry).On requestGeneral NotesThe above mentioned performance data is intended as guideline only. Performance suitability for any specific application should bedetermined by the end-user. Changes with regard to temperature, pressure, concentration or media composition, acting synergistically, may exclude the proposed media suitability above. Material selection is solely at the risk of the end-user. Consult a professional orPSI for specific applications. PSI’s liability is limited to the liability listed inside the PSI standard warranties.190
VCS/LineSealTMFlange Isolation KitsGENERAL INFORMATIONApproval byShell Global SolutionsThe PSI Pikotek VCS/LineSealTM flange isolation is a system for“Very Critical Service” designed for electrical flange isolationand general sealing applications. This seal is suitable for usewith raised-face, flat-face and RTJ flanges in all pressure classes including API 10.000 psi service. In addition to its superiorsealing characteristics and excellent dielectric properties, theVCS/LineSealTM is ideal for isolating flanges made from dissimilar metals, thus reducing galvanic corrosion and local flangeface corrosion.VCS/LineSealTM Isolation System Advantages and Benefits Extremely reliable sealing and isolating solution for all critical services Avoids flow turbulences at flanged connectionsSeals and isolates all pressure classes up through ANSI 2500 class and API 10.000 psiWithstands severe service conditions including large bending moments, fluctuating vibrations, temperatures and pressuresDesigned to withstand corrosive environments, including high concentrations of CO2, H2S, process water, etc.Outstanding isolation properties for cathodic protectionPressure-activated seals provide highly reliable sealing and eliminate costly leakageThe gasket size is adjusted to the respective flange diameter in order to protect the flange faces from media-induced corrosion andflow-induced erosionMitigates galvanic corrosion at dissimilar metal flangesResilient lamination material does not fail due to overpressure (e.g. due to overtightened bolts)Available to match any flange specification (ANSI, API, MSSP, BS, DIN, AS, etc.)Can mate mismatched RTJ with raised-face flangesEasy installation, and removalFlanges do not have to be lubricated as with ring gaskets. The VCS/LineSealTM easily slips into placeSealing system results in low required bolt loads. Less make up force is required resulting in less flange and bolt stressVCS/LineSealTM aligns and centers itself, is quickly installed and no special tools are requiredIts maintenance-free and corrosion protective design helps the gasket withstand deformation under high loadsEpoxy resin bondedfiberglass fabric (G10)VCS/LineSealTM DesignThe unique design of the VCS/LineSealTM system incorporateshigh-strength, glass-reinforced epoxy laminate bonded to astainless steel core. This provides the strength of a traditionalmetallic seal while maintaining complete electrical isolationbetween the flange faces. The seal grooves are machinedthrough the laminate isolating material into the stainless steelcore. This provides a strong base for the seal seat and breaksa potential leak path. Spring-energized teflon sealing elementsare installed in the dovetail-shaped seal grooves and providepressure-activated sealing that sets the VCS/LineSealTM apartfrom other less reliable sealing solutions. Other sealing elementconfigurations are also available such as Viton, Nitrile or Silicon.Integrated stainlesssteel core V4A (S316)Spring-energized teflonSeal with integratedstainless steel spring191
VCS/LineSealTMFlange Isolation KitsGENERAL INFORMATIONElectrical InsulationIn addition to its superior sealing characteristics, the PSIPikotek VCS/LineSealTM flange isolation distinguishes itselfnot only through it excellent sealing properties but alsoby providing electrical flange isolation and a hard-wearingsealing mechanism. The VCS/LineSealTM significantly decreaseselectrical potential between two flange faces by providing a nonconducting, non-metallic interface. This effectively eliminatescorrosion resulting from dissimilar metal contact or groundcurrent induced corrosion of metal piping components. Whenused with isolation sleeves and washers, the VCS/LineSealTMflange isolation is particularly effective at interrupting theelectrical conductivity in the pipeline systems with cathodicprotection. Strength and a long service life are outstandingproperties of the VCS/LineSealTM flange isolation in comparisonto other isolating gaskets. Traditional isolating gaskets arefragile and prone to failure because they are often made frombrittle, non-metallic materials (e.g. phenolic resin) and arenot capable of withstanding inadequate installation practices.The steel core of the VCS/ LineSealTM flange isolation and itspatented construction enable the gasket to withstand far moresystem pressure, fluctuating pressures, bending moments, andovertorquing.Flange withannular groove (RTJ)Flange with (flat-face)Sealing stripThe seal in made infront of the area of theannular grooveSealing CharacteristicsThe primary job that any gasket must perform is to seal thepressure differential between the internal and externalenvironment. The VCS/LineSealTM performs this task throughthe use of its spring-energized, pressure-activated sealingelements. At low system pressure, the spring acts to deflectthe lips of the seal, thus enabling low pressure sealing. As thepressure increases and comes in direct contact with the sealingelement, the system pressure deflects the seal lips and moresealing force is applied against the flanges. This high pressuresealing is accomplished while maintaining complete electricalflange isolation. This high-reliability sealing system makes thePSI Pikotek VCS/LineSealTM the seal to use when failure cannotbe tolerated. The fact that the VCS/LineSealTM uses pressureactivated sealing elements which are located inboard of thering groove on RTJ flanges has the additional benefit of allowingthe VCS/LineSealTM to seal mismatched RTJ to raised-face orflat-face flanges. This feature is very useful when replacingvalves using stock inventory that may have a different flangeface than the mating flanges.More content can be found onwww.psi-products.com192Flange connection for electrical isolation andagainst contact corrosion (in red)
VCS/LineSealTMFlange Isolation KitsTECHNICAL INFORMATIONMetal CoreThe core of each seal is made of hardened stainless steel (V4A/S316). Other metals such as duplex or Inconel are available upon request.Isolating Material OptionsTest MethodG-10*G-11*G-10CR**(Cryogenic)Compressive Strength (psi)65.00050.00065.000Dielectric Strength (VPM)750-800500800Max. Continuous Operating Temp.150 C202 C130 CMin. Continuous Operating Temp.-129 C-46 C-273 C0.050.0850.085Flexural Strength (psi)65.00057.70057.700Tensile strength (psi)50.00041.00041.000Bond Strength (lb.)2.6002.2002.200Shear Strength (lb.)22.00021.20021.200Water Absorption (%)* NEMA grade glass reinforced epoxy (GRE) laminate** Manufactured according to NIST G10CR for low temperature applicationsSealing materialThe sealing elements are intended to provide an impenetrable barrier through which no contained media or other substance canpenetrate. Consequently, the composite retainer backing material behind the seal remains uncontaminated, thus permanently holdingthe seal in place in a static, fully encapsulated manner.Dichtungsmaterialoptionen1. Teflon (Spring-Energized) StandardRecommended for all environments. Helical wound spring provides radial load. Encapsulation in the seal groove eliminates creep orcold flow. This sealing system truly distinguishes PSI Pikotek gaskets from all other flange sealing systems.Temperature range: -157 C to 200 C (note: gasket material is a limiting factor)2. VitonGeneral purpose oilfield elastomer. Excellent resistance to aliphatic hydrocarbons, glycols and H2S. Good resistance to aromatic hydrocarbons. Not recommended for: systems with amine inhibitors and in pipeline systems containing significant partial pressures of polargases (i.e. CO2) where radical pressure drops (i.e. 2000 PSI to 0 PSI) commonly occur.Temperature range: -26 C to 200 C3. Buna-NitrileGeneral purpose elastomer only suitable for low chemical resistance.Temperature range: -129 C to 116 C4. SilikonSuitable for use in potable water applications. Approved by WRAS.Temperature range: -55 C to 300 CSpecial sealing element materials are available upon request and subject to technical suitability.193
VCFSFlange Isolation KitsGENERAL INFORMATIONThe World’s only Firesafe flange isolation systemVCFS* (VCS FireSafe*) Based upon proven PSI Pikotek VCS/LineSealTM platform Secondary sealing system is fire safeProvides complete electrical flange isolationTandem seal technologyPrimary sealing system has more than twenty years successfultrack recordPassed API 6FB, part 3 fire testUsed in conjunction with cathodic protection systemsReduces potential flange rotationProvides sealing under low bolt loadThe VCFS* utilizes PSI Pikotek standard VCS design with its 20 years plus track record of successfully sealing very critical services. TheFS* version was created by taking a standard VCS configuration and adding a secondary sealing element that is capable of maintaininga seal while subject to a 1500 F (815 C) fire. The VCFS* combines the VCS’s proven track record of electrical isolation and sealingintegrity in aggressive chemical environments with a solution that has fully passed the API 6FB, 3rd Edition fire test.The VCFS* is suitable for all services up to, and including, ANSI 2500# and is offered for ring type joint (RTJ) flanges from 6” - 24”and raised face flanges from 2” - 24”. The VCFS* is designed for service where the cost of joint failure cannot be tolerated and theoperator desires both, electrical isolation and added sealing integrity in the case of a fire.The VCFS* seal consists of a PTFE spring-energized primary sealing element and an E-ring secondary seal, all seated in a highly resilient metal core, permanently bonded to an isolating lamination. Due to its unique pressure activated sealing mechanism, the gasketrequires far less bolt load to seal than other gasket types. In addition, the engineered E-ring will serve as a secondary seal duringnormal operation and as the primary sealing element during a fire.The API 6FB Fire TestThe API 6FB test requires that any sealing or connection holds up for 30 minutes in fire and then another 60 minutes cooling down. Afterthe assembly is cooled down to room temperature, the line is de-pressurized and then re-pressurized. During all stages of the test thegasket must not exceed an leakage rate prescribed by API.Temperature vs. Time ChartChart 1Temperature log of the calorimeter blocks and thermocouples during the full 60 minutes burn and cooldown cycle.194Pressure vs. Time ChartChart 2Pressure versus time chart for this test.More content can be found onwww.psi-products.com
VCFSFlange Isolation KitsTECHNICAL INFORMATIONIsolating Material OptionsTest methodG-10* (Cryogenic)G-11*Compressive Strength (psi)65.00050.000Dielectric Strength (VPM)750-800500Max. Continuous Operating Temp.150 C202 CMin. Continuous Operating Temp.-129 C-46 C0.050.085Flexural Strength (psi)65.00057.700Tensile Strength (psi)50.00041.000Bond Strength (lb.)2.6002.200Shear Strength (lb.)22.00021.200Water Absorption (%)* NEMA grade glass reinforced epoxy (GRE) laminateDiamond-HydeTM HCS Washer System:As part of the development of the VCFS gasket, we had to compensate the occurring bolt load loss during the burn process of the API6FB fire test. Therefore we developed the new Diamond Hyde hardened coated steel washer system which meets these requirements.Metal Grade 1050 steelHeat treated per ASTM F-436 specificationQuenched and tempered for hardeningCoating The washer coating is a copyright protected development called Diamond Hyde The coating is overall strong and long-lasting with high dielectric and lubrication propertiesThe coating consists of a corrosion resistant pre-treatment and several layers of modified PTFE synthetic resin coating withcuring agents.Dielectric of 1000 Volts/milMaximum working temperature of 250 CMinimum working temperature -40 C*Note:The “FS” or “Fire Safe” designation denotes only that this gasket has successfully passed the API 6FB fire test. Due to the fact thatevery fire is unique and many uncontrolled variables are present, no other claims regarding suitability or performance in a fire aremade. Each designer, user and/or operator will need to assess their individual situation when deciding to install FS style gaskets.Patent Pending.195
PSI Products GmbHUlrichstrasse 2572116 Mössingen / GermanyPhone:Fax:E-Mail:0 049 (0)7473 3781 00 049 (0)7473 3781 35export@psi-products.dewww.psi-products.com PSI Products GmbH, 08 I 2019
the lips of the seal, thus enabling low pressure sealing. As the pressure increases and comes in direct contact with the sealing element, the system pressure defl ects the seal lips and more sealing force is applied against the fl anges. This high pressure sealing is accomplishe
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Titanium alloys commonly used in industry Table 1 1 INTRODUCTION 35A 1 R50250 35,000 psi 25,000 psi C.P. Titanium* 50A 2 R50400 50,000 psi 40,000 psi C.P. Titanium* 65A 3 R50550 65,000 psi 55,000 psi C.P. Titanium* 75A 4 R50700 80,000 psi 70,000 psi C.P. Titanium* 6-4 5 R56400 130,000 psi 120,000 psi 6% AI, 4% V *Commercially Pure (Unalloyed .
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in the gasket seating surfaces. 2. Sufficient forces must be available to maintain a residual stress on the gasket under operating conditions to ensure that the gasket will be in intimate contact with the gasket seating surfaces to prevent blow-by or leakage. 3. The selection of the gasket material must be such that it will withstand the
1. Temperature 59 2. Pressure 63 3. Fluid 65 4. Gasket Thickness 65 5. Gasket Stress 67 6. Gasket Storage and Handling 71 7. Unique Applications / Specialty Equipment 74 B: Flange Related Considerations.78 1. Flange Type 78 2. Flange Surface Finish 82 3.
6 mm flange bolt (8 mm head, small flange) 6 mm flange bolt (8 mm head, large flange) 6 mm flange bolt (10 mm head) and nut 8 mm flange bolt and nut 10 mm flange bolt and nut : 4.2 (0.4, 3.1) 9 (0.9, 6.6) 9 (0.9, 6.6) 12 (1.2, 9) 12 (1.2, 9) 27 (2.8, 20) 39(4.0,29)
Business-Level Strategies 23.11.2010 4. What is a Strategic Business Area? Demand Demand potential (size, growth rate, market share) Customers Customer potential customer structure, buying motives and criteria) Competition Structure of the competition, the competitors' objectives and strategies, competitive position Specific resources and competences (the strategic capabilities) Organisation .
