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Applications• AdjustableChokeisintendedforflowingfluidcontrol.Theuseofthisvalvemakespossibletocontrolfluidflowlinesize,toavoidunnecessaryerosionanddamagecausedbyturbulencethroughtheflowingsystem.Itisequippedwithanindicatorshowingactualdiametersofring-shapedareabetweenseatanddisc,anditservesasthebasicforcalculatingflowareasize.

Materials• Body,bonnetandbonnetnutareofalloyedChromium-Molybdenum(Cr-Mo)steelorstainlesssteel.Plug,bodyseatringandstem aremadeofstainlesssteelwithaminimumof13%Chromium.TheBonnetgasketismadeofVITON.

Production and delivery• AdjustableChokeisdesigned andmanufacturedinaccordance withAPISpec.6A, productspecificationlevelPSL1 (PR1).Dimensionsoftheflange connectionsareaccordingwith APISpec.6A/typeBRingJoint, threadedendsaccordingtoAPIStd. 5B.Centre-To-FaceandCentre-To-Enddimensionsareaccording tomanufacturerstandard.Quality controlisaccordingtoAPISpec.6A.

Instruction for Installation• Beforeinstallationandfirstrunconnectingpipelineshouldbethoroughlycleanedofforeignparticlesthatmaydamagetheseatingsurface.

Adjustable Choke [VAC]

Standard:API6A

DN50(21/16)Workingpressure2000÷5000psi

A-11-VAC-EN-V170617-R00.pdfWe keep the right to change the design, materials and weights at any time without prior or direct notice.

[VAC] Dimensions Table A.8.2

2000 psi (140 bar)

DN (NPS) AD Dk H d n CTE/CTE* CTE1 Dt CTE* CTE

(mm)

50 (2 1/16). 2000 psi 2 165 127 675 19 8 180 205 230 73 65

3000/5000 psi (210/350 bar )

50 (2 1/16). 3 / 5000 psi 2 215 165,1 695 26 8 195 225 230 92 72

List of materials Table A.8.1

Item Part

Material Class acc. to API 6A Spec.AA,BB,DD a),EE a) CC,FF a)

Temperature class acc. to API 6A Spec. K ÷ V (-60°C up to 121°C)

1 Body A4874A A217CA152 Bonnet A4874A A217CA153 Plug A182F6a4 BodySeatRing A182F6a5

TrimRingSeat 13Cr-hardened

6 PlugSeat 13Cr-hardened7 Stem A276T420-nitrided8 BonnetNut A4874A A217CA159 StemPacking PTFE+VITON

10 Handwheel caststeela) IncompliancewithNACEMR0175

Drawing A.8.1 Parts and dimensions

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(kg)

143

9

82

7

10

5

6

D

DN(NPS

)CTE*

Dk

nxd

Dt

H

CTE

1

CTE

CTE

1

A"-LP

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A-11-VAC-EN-V170617-R00.pdfWe keep the right to change the design, materials and weights at any time without prior or direct notice.