Samson 3271 Mounting And Operating Instructions

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Samson 3271 Mounting And Operating Instructions Manual pdf 33 page image

EB 8052 EN 5-3Installationpressure rating of the pipeline, mediumtemperature etc.). See the 'Markings onthe device' section for nameplate details.− The requested or required additionalpipe fittings (see the 'Additional fittings'section) have been installed or preparedas necessary before installing the valve.Risk of control valve damage due to incor-rect insulation.Î Only insulate control valves with insulat-ing section or bellows seal up to the bon-net flange of the valve body for mediumtemperatures below 0 °C (32 °F) andabove 220 °C (428 °F). If the insulatingsection is insulated, it will not functionproperly.Î Do not insulate valves mounted to com-ply with NACE MR 0175 requirements.Proceed as follows:Î Lay out the necessary material and toolsto have them ready during installationwork.Î Flush the pipelines.The plant operator is responsible for clean-ing the pipelines in the plant.Î For steam applications, dry the pipelines.Moisture will damage the inside of thevalve.Î Check any mounted pressure gauges tomake sure they function properly.Î When the valve and actuator are al-ready assembled, check the tighteningtorques of the bolted joints (u AB 0100).Components may loosen during trans-port.5.3 AssemblyProceed as follows for assembly and to pre-pare for start-up of the valve.Risk of valve damage due to excessivelyhigh or low tightening torques.Observe the specified torques on tighteningcontrol valve components. Excessively tight-ened torques lead to parts wearing outquicker. Parts that are too loose may causeleakage.Î Observe the specified tightening torques(u AB 0100).Risk of valve damage due to the use of un-suitable tools.Î Only use tools approved by SAMSON(u AB 0100).NOTICE!NoteNOTICE!NOTICE!