10
3. Transport and storage
Our valves are supplied ready-for-use with the plug in closed position and with all connections
shieldedwithsuitableprotectivecovers(toberemoveduponinstallation).
During transport it is paramount to ensure that valves are not damaged in any way. This applies
particularlytothemostexposedparts(spindleandhandwheel).Allvalvesweightsarereportedon
therelevanttechnicaldatasheet(3C.115).Largervalvesmustbetransportedproperlyxedtothe
protective bridge covers using suitable handling ropes.
Upondelivery,carefullyinspectforanydamageordefectswhichmustbereportedtoSpiraxSarco
immediately.Furthermore,itisnecessarytoverifythatthetechnicalspecicationsareincompliance
withtheplantequipmentcharacteristics,thatthemanufacturingmaterialsandtheoperatinguid
aresuitablefortheintendeduse,andthatthemaximumpressureandtemperaturelimitscomply
withtheprovidedlimits(SeethevalvesIDplate).
Unloading and handling note: NEVER hook or string any lifting tools to the anges holes or
to the handwheel spokes.
The storage of the valves must ensure their perfect performance even after extended stocking
periods: for this reason, valves should be stored up in a closed, decontaminated, dry environment
with a temperature ranging from -20°C and +65°C. Furthermore, this environment should be free of
anymoisture,corrosionorfreezingrisk,andshouldnothaveanydirtorforeignmatterontheinside
which is potentially harmful to the valves.
4. Installation
Note: Before actioning any installation observe the ‘Safety information’ in Section 1.
Any mistake during positioning and mounting the valve may compromise its correct operation and
constitute a high potential safety risk. It is therefore absolutely necessary to follow with the utmost
attention to the directions listed below:
Unpack the valves and remove the protective covers.
Inspect the valve checking that they are complete and free of any traces of dirt that may have gathe-
redduringstorage.Alsocheckthatthecouplingpipingiscleaninitsinteriorandisttedwithalter
upstream the valve. The presence of scale or foreign bodies inside the valve may cause irreversible
damagestothesealingsurfacesbetweenseatandplug(Evenduringordinaryoperationand,for
thisreason,notcoveredbywarranty).
CheckthatthetechnicalinformationandspecicationsontheIDplatematchtheoperatingconditions
ofthesystemtowhichthevalveistobetted.
A safe operation can only be guaranteed if the supplied valve is destined for uses that are both
knownandagreedwithSpiraxSarcoandthatdonotexceedthelimitsshownontheIDplate(ope-
ratingbeyondsuchlimitscancauseexcessivestressandbeunsustainable).Itisequallyimportant
toactinaccordancewithanyotherindicationspeciedinthedocumentationsuppliedwiththeunit.
Note:itisappropriatethatcustomerspreciselynotifySpiraxSarcoaboutpossibleheavyloadsor
operatingconditionswhichdeviatefrom normal operation (eg.specialapplications,corrosiveor
toxicoperatinguidsetc.)toenableSpiraxSarcoengineerstodevelopandproposeappropriate
measures/actions, such as alternative materials and seals / gaskets, special protections for areas
intenselyexposedtowear,solutionstopreventexcessiveandpressure/temperaturevaluesoutof
allowable range etc...
For maintenance and correct operational purposes, valves should always be installed in easily
accessible positions.
Valves can be installed in any position, but it is advisable that the valve spindle is in vertical position
and the handwheel downward, to prevent the collection of impurities into the bellows folds.
Alwaysrespecttheowdirectionindicatedbythearrowimprintedonthevalvebody(Fig.2).
Forsmallervalves(DN15-150),pleasenotethattheowentersthevalvebodyfromthelowerside,
thatistosaylightlytouchingthebottomsurfaceoftheplug(plugwithoutbalancingdisc);Inlarger
valves,(DN150,DN200and250),theoperatinguidenterstheupperchamberabovethebalanced
plug(plugwithbalancingdisc).