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Applications• PositiveChokeisintendedforflowingfluidcontrol.Theuseofthisvalvemakespossibleefficientandsimplecontroloffluidflowlinewithoutunnecessaryerosionanddamagecausedbyturbulenceintheflowingsystem.Flowingareaischangeablebythedifferentsizesoforifices.

Materials• Body,bonnetandbonnetnutareofalloyedChromium-Molybdenum(Cr-Mo)steelorstainlesssteel.Orificeandbodyseatringaremadeofstainlesssteelwithaminimumof13%Chromium.TheBonnetgasketismadeofVITON.

Production and delivery• PositiveChokeisdesignedand manufacturedinaccordancewith APISpec.6A,product specificationlevel PSL1(PR1).Dimensionsoftheflange connectionsareaccordingwith APISpec.6A/typeBRingJoint, threadedendsaccordingtoAPIStd. 5B.Centre-To-FaceandCentre-To-Enddimensionsare accordingtomanufacturerstandard. QualitycontrolisaccordingtoAPISpec.6A.

Instruction for Installation• Beforeinstallationandfirstrun,connectingpipelineshouldbethoroughlycleanedofforeignparticlesthatmaydamagetheseatingsurface.

Positive Choke [VPC]

Standard:API6A

DN50(21/16)Workingpressure2000÷5000psi

A-12-VPC-EN-V170617-R00.pdfWe keep the right to change the design, materials and weights at any time without prior or direct notice.

[VPC] Dimensions Table A.9.2

2000 psi (140 bar)

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

(mm)50 (2 1/16). 2000 psi 2 165 127 386 20 8 180 205 47 39

3000/5000 psi (210 - 350 bar)50 (2 1/16). 3 / 5000 psi 2 215 165,1 406 26 8 195 225 71 51

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List of materials Table A.9.1

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.

1 Body A4874A A217CA152 Bonnet A4874A A217CA153 Orifice A182F6a-hardened4 BodySeatRing A182F6a-hardened5 BonnetNut A4874A A217CA15

a) IncompliancewithNACEMR0175

Drawing A.9.1 Parts and dimensions

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(kg)

D

DN(NPS

)

CTE*

Dk

nxd

H

CTE

1

1

4

3

CTE

CTE

1

5

2

A"-LP

K ÷ V (-60°C up to 121°C)

A-12-VPC-EN-V170617-R00.pdfWe keep the right to change the design, materials and weights at any time without prior or direct notice.