Mechanical Seal Piping PlansPlan 01Single SealsWhatInternal seal chamber flushWhyHeat removalWhereCustom seal chamberMechanical Seal Piping PlansPlan 02Single SealsWhatDead-ended seal chamberWhySimplicityWhereEnlarged seal chamberMechanical Seal Piping PlansPlan 11Single SealsWhatDischarge flush with orificeWhyHeat removal, Vapor marginWhereGeneral applicationsMechanical Seal Piping PlansPlan 13Single SealsWhatSuction flush with orificeWhyHeat removal, ventingWhereVertical pumpsMechanical Seal Piping PlansPlan 14Single SealsWhatDischarge and suction flushwith orificeWhyHeat removal, ventingWhereVertical pumpsMechanical Seal Piping PlansPlan 21Single SealsWhatDischarge flush through orifice& coolerWhyCoolingWhereHot serviceMechanical Seal Piping PlansPlan 23Single SealsWhatPumping ring flush throughcoolerWhyHigh efficiency coolingWhereHot service, boiler feed waterMechanical Seal Piping PlansPlan 31Single SealsWhatDischarge flush throughcyclone separatorWhyHeat removal, solids removalWhereDirty processMechanical Seal Piping PlansPlan 32Single SealsWhatExternal flushWhyHeat removal, solids removalWhereDirty process, paper pulpMechanical Seal Piping PlansPlan 41Single SealsWhatDischarge flush through cyclone separator & coolerWhyCooling, solids removalWhereHot service with solidsMechanical Seal Piping PlansPlan 52Dual SealsWhatUnpressurized buffer fluidcirculation through reservoirWhyBackup sealWhereHigh vapor pressure fluids,emissionsMechanical Seal Piping PlansPlan 53ADual SealsWhatPressurized buffer fluidcirculation through reservoirWhyIsolate process fluidsWhereHazardous fluids, lowpressureMechanical Seal Piping PlansPlan 53BDual SealsWhatPressurized buffer fluidcirculation with bladderaccumulatorWhyIsolate process fluidsWhereHazardous fluids, high pressureMechanical Seal Piping PlansPlan 53CDual SealsWhatPressurized buffer fluidcirculation with pistonaccumulatorWhyIsolate process fluidsWhereHazardous fluids, dynamicTracking of system pressureMechanical Seal Piping PlansPlan 54Dual SealsWhatPressurized buffer fluidcirculation by external systemWhyIsolate process fluidsWhereHazardous fluidsMechanical Seal Piping PlansPlan 62Quench SealsWhatExternal quench on atmosphericsideWhyPrevent solids buildupWhereHot hydrocarbon, causticMechanical Seal Piping PlansPlan 72Gas SealsWhatUnpressurized buffer gas control systemWhyBackup sealWhereHydrocarbon service, emissions,Commonly used with Plan 75 or 76Mechanical Seal Piping PlansPlan 74WhatPressurized barrier gas controlsystemWhyIsolate process fluidsWhereHazardous fluids, emissionsMechanical Seal Piping PlansPlan 75WhatDrain to liquid collector and vapor recoveryWhyLeakage collectionWhereCondensing leakage, emissionsMechanical Seal Piping PlansPlan 76WhatVent to vapor recoveryWhyLeakage collectionWhereNon-condensing leakage,emissionsMechanical Seal Piping PlansPiping Plans Not Recommended by FlowserveMechanical Seal Piping PlansPlan 12WhatDischarge flush with strainerand orificeMechanical Seal Piping PlansPlan 22WhatDischarge flush through strainer, orifice & coolerMechanical Seal Piping PlansPlan 51WhatDead-ended blanketMechanical Seal Piping PlansPlan 61WhatTapped connections for purchaser useMechanical Seal Piping PlansPlan 71WhatTapped connection forpurchaser use