Honeywell HON COCON 13 - Page 9

Operators manual
© 2017 Honeywell International Inc.
Operators manual underground gas pressure reducing station
Type: COCON 13
Page 9
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Thehingedpitlidcover(10)isfittedwithastainlesslatchthatissecurelypluggedforthepreventionofunauthorized
entry.
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Anisolatingballvalve(09)ismountedtotheinletofthecasing.Whenthisballvalveisopen,itshandleprevents
removalofthePlexiglascover.
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Adust
filter(07)isconnectedunderthecartridge.
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Thegasthenpassesthroughasafetyshut‐offdeviceupstreamoftheregulatorwithinthemodularcartridge:
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‐ Thedeviceconsistsofassdvalve(06)andassdcontroller(03).Thecontrollersitsontopofthecartridge.If
theregulatorfails
intheopenposition,therelaywilldetectanincreaseinlinepressureandreleasethe
spring‐loadedvalve,cuttingoffthegassupply.Itisalsofittedwithamanualemergencyreleasebutton.
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Gaspressurereductionisachievedbyapilotoperated,diaphragmregulator(05).
Therequiredoutletpressure
issetandcontrolledwiththepilot.
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Avalve(11)isattachedtotheoutletflange.Thevalvecanbeoperatedwithoutremovingthecoverofthecasing.
However,asasafetyfeature,ifthisvalveisopen,thenitisnotpossibletoremovethisPlexiglascover.
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Theinstallationof
areliefvalveisanoption.
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Transducerscanbeinstalledintheprotectionoftheenclosedspace,fortheremotemeasurementofpressures.Close
indicationoftheslamshutvalvebymeansofaproximityswitchisalsoavailable.
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Thestationisfittedwithtwopressuregaugeswhichreadthe
inletandoutletpressures.Thesegaugesaresituated
undertheprotectionofthePlexiglascoverbutarevisiblewhenthepitlidcoverisopened.
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Purgevalvesfordepressurizationoftheunitaremountedonthecartridge.
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Ahandleisattachedtothecartridge,sothecartridgecanbeeasilyremoved
fromthecasing.
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