KlingerSentry Gasket

Metallic gaskets are used in high pressure and typically hazardous pipelines constituting a huge safety risk in the event of a failure.

For this reason leakage testing prior to pressurising the pipeline is of utmost importance. However traditional leak testing carries heavy production downtime and subsequence loss of earnings.

— Allows leak testing on individual ¾ERKIH�NSMRXW�[MXLSYX�XLI�RIIH� to pressurise the full system.

— Leak test both the primary and secondary sides of the seal.

— Speeds up the leakage testing reducing plant downtime.

°��7MKRM½GERXP]�VIHYGIW�XLI�ZSPYQI� of testing media required.

°��:EPMHEXIW�MRHMZMHYEP�NSMRX�MRXIKVMX]� at installation reducing the need XS�VI�ZMWMX�XLI�NSMRX�

°���.SMRXW�GER�FI�XIWXIH�ERH�EHNYWXIH�if leakage occurs, in one visit to XLI�¾ERKI�

Traditional leakage testing

Leakage testing a newly erected or amended pipeline MW�GEVVMIH�SYX�F]�½PPMRK�XLI�pipeline with pressurised water or gas to monitor any changes in pressure which indicate a HIJIGXMZI�NSMRX��8LI�TVSGIWW� is carried out in sections by blanking off an area of a pipeline using shutoff valves or blinds.

Depending on the valve location it may be a large section of pipeline that must be pressurised to test a single ¾ERKI�GSRRIGXMSR�ERH�MR�WSQI�cases it is not practicable to PIEO�XIWX�EPP�SJ�XLI�NSMRXW��0IEO�testing large portions of pipeline is a time consuming process, increasing production downtime and consequently induces economic loss.

Reverse Integrity Gasket leakage testing

Reverse Integrity Gaskets are designed to allow leakage testing to be carried out on individual gasketed connections to determine if tightness has been achieved before introducing internal pressure and also allows monitoring of the NSMRX�XLVSYKLSYX�MXW�PMJIWTER�

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Gasket test port

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Klinger Sentry Gasket Klinger Sentry Gasketwww.klinger.co.uk www.klinger.co.uk

KlingerSentry Gasket

Klinger Sentry RTJ Gasket

Klinger Sentry 1E\MTVS½PI

6MRK�8]TI�.SMRXW��68. �EVI�TVIGMWMSR� engineered components designed XS�FI�YWIH�MR�GSRNYRGXMSR�[MXL�TVIGMWMSR�QEGLMRIH�¾ERKIW�

8LI�VMRK�KEWOIX�MW�PSGEXIH�[MXLMR�ERRYPEV�recesses in the opposing faces of the ¾ERKIW��8LI�VMRK�KEWOIX�MW�GSQTVIWWIH�into the groove and the angled sealing faces deform to match the grooves and create a seal.

8LI�TVIWWYVI�GPEWWIW�ERH�KISQIXVMIW�SJ�XLI�KEWOIXW�ERH�¾ERKIW�EVI�KMZIR�MR�XLI�standards API 6A, ASME B16.20 and ASME B16.5.

8LI�VMRK�KEWOIXW�GER�FI�WYTTPMIH� in the following materials.

8LI�7IRXV]�GER�FI�YWIH�MR�FSXL� VMRK�NSMRX�ERH�VEMWIH�JEGI�¾ERKIW�� 8LI�7IRXV]�QIXEPPMG�VMRK�NSMRX� gaskets are heavy duty, high-pressure gaskets largely used in offshore petrochemical applications.

8LI�/PMRKIV�1E\MTVS½PI�MW�E�GSQTSWMXI�gasket, which utilises a serrated metal GSVI�[MXL�E�WSJX�JEGMRK�QEXIVMEP��8LI�Sentry designed for use in raised face ¾ERKIW�MW�FEWIH�SR�E�1E\MTVS½PI����

8LI�QIXEP�GSVI�MW�QEGLMRIH�SR�IEGL�contact face with concentric serrations which provide high pressure areas, IRWYVMRK�XLEX�XLI�WSJX�GSEXMRK�¾S[W� MRXS�ER]�MQTIVJIGXMSRW�MR�XLI�¾ERKI� IZIR�EX�VIPEXMZIP]�PS[�FSPX�PSEHW��8LI�result is a gasket which combines the FIRI½XW�SJ�WSJX��GYX�QEXIVMEPW�[MXL�XLI�advantages of seal integrity associated with metallic gaskets.

Facing Materials

)\TERHIH�KVETLMXI�MW�XLI�QSWX�GSQQSR�JEGMRK�QEXIVMEP�YWIH�JSV�1E\MTVS½PI�gaskets. However, other materials can FI�YWIH��WYGL�EW�48*)�JSV�GLIQMGEPP]�aggressive duties or mica for high temperature duties.

Core Materials

1E\MTVS½PI�KEWOIXW�GER�EPWS�FI�manufactured from a range of core materials according to media compatibility and temperature considerations.

* Soft iron and carbon steel gaskets are zinc plated to prevent corrosion

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Material Brinell HardnessSoft Iron 90Low Carbon Steel 1204-6% Cr ½% Mo 130304 160316 160321 160347 160410 1701SRIP��2����� �� ���927�2������ ���Inconel 625 --RGSPS]����� �Hastelloy C-276 -8MXERMYQ� �

Core Material Stainless Steel 316L Stainless Steel 304 Carbon Steel Monel 400 2MGOIP�����Inconel 600 Inconel 625 -RGSPS]�����Hastelloy B-2/B-3 Hastelloy C-276 8MXERMYQ�+V���(YTPI\�92�7�����Stainless Steel 347Stainless Steel 321Zirconium7YTIV�(YTPI\254 SMO8MXERMYQ�+V�Hastelloy C-22Hastelloy G-31Alloy 20

Facing MaterialGraphite 48*)�Mica /0-2+)6WMP�'������

Klinger Sentry Gasket Klinger Sentry Gasketwww.klinger.co.uk www.klinger.co.uk

Serrated Metal Core

Compressible Filler Material

1 8IWX�'SRRIGXSV�[MXL�*MVI�WEJI�WIEP

2 Anti-Rotation Device

3 Outer Guide Ring

4 Pressurisation Groove

5 Primary Seal �7IVVEXIH�1IXEP�'SVI�;MXL�+VETLMXI�*EGMRK

6 Secondary Seal �7IVVEXIH�1IXEP�'SVI�;MXL�+VETLMXI�*EGMRK

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8LI�/+-8�HIGVIEWIW�XLI�VMWO�SJ�MRNYV]� XS�HMZIVW´�LERHW�ERH�½RKIVW�EW�XLI�IRKMRIIVIH�TVS½PI�MW�HIWMKRIH�XS�PSGEXI�accurately within the lower bolts of the ¾ERKI��IRWYVMRK�XLI�KEWOIX�WMXW�GSVVIGXP]� MR�XLI�KVSSZI��;MXL�[IPP�TSWMXMSRIH� holes designed to accommodate WXERHEVH�WYFWIE�XSSPMRK��XLI�/+-8� EMHW�XVERWTSVXEXMSR�ERH�½XXMRK��*PERKI�EPMKRQIRX�XSSPW�GER�FI�PIJX�MR�XLI�¾ERKI� EW�XLI�KEWOIX�MW�½XXIH�QMRMQMWMRK�QSZIQIRX�SJ�XLI�¾ERKIW�IRWYVMRK�XLIVI� is no ‘bruising’ or ‘pinching’ to the gasket.

8LI�/+-8�SJJIVW�MQTVSZIH�¾ERKI�QEOI� YT�XMQIW�ERH�MRGVIEWIH�WEJIX]��8LI�WLETI�of the tool also prevents the handle from rotating in front of the studbolt holes, ensuring the gasket doesn’t need to be repositioned to add the remaining bolts.

Once installation is complete, the handle SJ�XLI�/+-8�GER�FI�IEWMP]�FVSOIR�SJJ�KMZMRK�EGGIWW�XS�XLI�7IRXV]�XIWX�HYGX��8LI�XEK�GER�be retained for records. After a period of XMQI��XLI�/+-8�GSVVSHIW�E[E]�HYI�XS�E�cathodic reaction, as a result of immersion in salt water.

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High Pressure quick release test plug connectorQuick release connection between pressure equipment inlet and gasket test plug connector allow quick and easy attachment for testing.

2

Anti-Rotation Device8LI�HYGX�GSQTVMWIW�ER�ERXM�VSXEXMSR�device which sits within the MRXVE�¾ERKI�WTEGI��8LI�HIZMGI�prevents rotation and bending of the testing duct preventing stress at the welds.

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Pressurised Recesses-R�XLI�68.�WX]PI�XLI�TVIWWYVMWEXMSR�occurs in the annular cavities above ERH�FIPS[�XLI�KEWOIX�MR�XLI�¾ERKI�KVSSZI�VIGIWWIW��-R�XLI�1E\MTVS½PI�style the pressurisation occurs in the annular space between primary and secondary seals.

4

Pressure MonitoringPressure changes within the sealed recess are monitored from outside XLI�¾ERKIW�ZME�XLI�XIWX�IUYMTQIRX��� -J�XLI�WIEP�MW�WYJ½GMIRX��XLI�TVIWWYVI�will be maintained. Conversely, in the event of a seal fault, failure to hold the pressure can provide an indication of a leak path between the gasket and the recess, indicating intervention is VIUYMVIH�MR�XLEX�TEVXMGYPEV�NSMRX�

5

Pressurised Fluid InletKlinger hydraulic test equipment is designed to be compatible for use both on site and for subsea ETTPMGEXMSRW��8IWX�6ERKI�������&EV�

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Fluid Delivery Ducts 8LI�XYFI�I\XIRHW�JVSQ�XLI�KEWOIX�MRXS�XLI�WTEGI�FIX[IIR�XLI�¾ERKIW��and is accessible from the outside of the pipe when the gasket is sealed MR�XLI�VIGIWW��8LI�XYFI�EPPS[W�¾YMH�GSQQYRMGEXMSR�[MXL�E�8�WLETIH�channel within the gasket to allow pressurisation of the cavities.

Sentry Gasket Leakage Testing

Klinger Sentry Gasket Insertion Tool

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A Klinger Sentry gasket incorporates a leak detection system

Post Leak detection

1

Blind Plug with Fire-Safe seal8LI�FPMRH�GET�GSSTIVEXIW�[MXL�XLI�connector on the duct, to close the STIRMRK�XS�XLI�XIWX�GEZMXMIW��8LI�GET�has a sealing member in the form of an annular packer enabling the gasket XS�LSPH�½VIWEJI�GIVXM½GEXMSR���

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&PMRH�4PYK�[MXL�,I\�LIEH� JSV�IEW]�½XXMRK8LI�&PMRH�TPYK�LEW�E�LI\EKSREPP]��shaped recess compatible for use with torqueing tools such as an Allen key.

8LI�&PEROMRK�GET�QYWX�FI�ETTPMIH� at the end of the leakage testing procedure and can only be used once. If removed for retesting, the blanking cap must be renewed.

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Klinger Sentry Gasket Klinger Sentry Gasketwww.klinger.co.uk www.klinger.co.uk

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Projects

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Grangemouth

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Aberdeen

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Runcorn

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Southampton

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Immingham

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