Alfa Laval ALS - Pressure Limits

4Operation
Studytheinstructionscarefullyandpayspecialattentiontowarnings!Always Always
Always
checktheAgitatorbeforeoperation(see
chapter3.3Pre-usecheck).
AlfaLavalrecommendasoftstarterorafrequencyconverterfortheAgitatortoreducetheloadontankandAgitator.For
operationinstructionsfromsuppliers(seechapter8Appendix).
4.5Pressurelimits
TheALSandALBagitatorcanbeequippedwithdifferentshaftsealtypeswithdifferentoperatingproperties.Theshaftseal
isselectedaccordingtotheapplication.Inbelowtableyouwillfindthemaximumallowabletankpressureduringoperation
forthedifferentsealtypes.
Tankpressure[barg]
Sealtype
Min.Max.
Designation
-S1-
-0.56.0
Singlemechanicalshaftseal,Highpressureandhighspeed
-S2-
-0.56.0
Singlemechanicalshaftseal,Highpressureandhighspeed
-S3-
-0.56.0
Singlemechanicalshaftseal,Highpressureandhighspeed
-D--1.04.5*
Doublemechanicalshaftsealw.flush,Mediumpressureandhighspeed
-DC-
-1.06.0
Doublemechanicalshaftsealw.flush,Highpressureandhighspeed
*Ifthesealfacesaresubmerged,themaximumtankpressurecanbeincreasedto6.0bar(g).
NOTE NOTE
NOTE
Abovepressuresarenottakinglimitationsonflangeconnectionsaccordingtolocalpressureregulationsintoconsideration.
Beawarethattheoperatingpressurelimitsfortheshaftsealcanbelowerthanthetankdesignpressure.
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