Flowserve IOM Control Valves: EN

• Are thepipingangesequiaxialandparallelanddoesthe

distancebetweenpipeendscorrespondtothevalvelength?

If not, excessive tension, valve malfunctions and leaks at the ange connections

EN

may result.

• Is the piping routed correctly and is the valve free from

additionalpipingforces?

If not, leaks may develop and, depending on the situation, the valve may fail.

• Is the installation position of the valve with vertical valve

spindleachieved?

If not, increased wear in the stung box packing, leaks and, depending on the

situation, rubbing may occur.

Contact the manufacturer if the prevailing installation conditions mean that the

valve will have to be tted horizontally.

• Isthereasuitablesurgesectionupstreamanddownstream

ofwherethevalveisinstalled?

The absence of a surge section can create critical operating conditions and

cause impermissible levels of noise and vibration!

• Isappropriateequipotentialbondingprovided?

Impermissible electrical compensating currents across the valve and the actuator

can generate static and cause electrical discharging.

 Inexplosiveatmospheres, theonlyvalvesthatmaybeused

arethose that comply with the permitted group, equipment

category and temperature class requirements laid down in

Directive94/9/EC(ATEX)!

Recommended installation Successful useof the control valveis conditionalon

 the availability of a suitable installation environment.

Wesuggestthattherecommendedvaluesbeadheredto,asitisveryimportanttotake

accountofphysicalaspectswhenusingthecontrolvalve.Deviationscanresultinsignicant

controldeviations,andintheworstcaseexpensivereroutingofthepipingwillbenecessary.

However,somephysicalprocesseswillpermitadeviationfromthesevalues,althoughinsuch

casessystemknowledgeisrequired,asistheexpressapprovalofthemanufacturer.

Recommendedinstallationfor

controlvalves

Controlvalve

Dirt trap

(0.1mm)

Medium

Installationdistancefromvalve

10 x DN

(atleast1m)

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