DAWSONS-TECH Ball Valve Series : VB71 Three piece bi-directional flow Ball Valves offer high pressure rating up to 10,000 PSIG (690 Bar). The Live-Loaded PEEK Seat ensure 100% bubble tight shut off and continuous repeatable performance and also compensate for wear and pressure / temperature charges. This Ball Valves are for most demanding applications in Hydraulic and Process Control Industries.
Features / Benefit :
  • Available in Material SS316
  • Material Traceable to certified material test report
  • Three piece body design.
  • Low torque operation, Bi-directional Flow
  • Line Loaded PEEK Seat ensure bubble tight sealing and compensate for wear and Pressure / Temperature changes.
  • Floating Ball design
  • Quarter turn positive stop handle.
  • Every Valve is pressure tested.
High-Pressure-Ball-Valves-Series-VB71
VB71 Features
Operating Parameters :
  • Pressure Rating : UPTO 10,000 PSIG (690 BAR) at CWP with PTFE packing, PEEK Seat and Fluorocarbon ‘O’ Ring
  • Temperature Rating : -54o C to 180o C (depending on ‘O’ Ring material)
  • End Connections - Inch : 1/4” to 1” Tube OD
  • Metric : 6mm to 25mm Tube OD
  • Pipe Threads: 1/4” to 1” Male / Female BSP / BSPT / NPT
Applications :
  • Hydraulic
  • Gas
  • Instrument Air Lines
  • High Pressure Instrument Lines
  • General Plant Service
Type Test Approvals :
 The design of DAWSONS-TECH Ball Valves Series : VB81 have been tested to Hydrostatic Proof & Burst Test in accordance to MSS SP-99-2016a Clause 5.5 & 5.6.

Testing :
  • Standard Test - Each Valve is pressure tested with Nitrogen at 1000 PSIG (69 Bar) for leakage at the seat and packing.
  • Optional Hydrostatic Test - This Test is performed with De-ionized water at 1.5 times the working pressure.
    •  
    Certification :
     The Certificate to 3.1 acc. to EN10204 for Valves body material and pressure test will be provided on request.
    Material of Constructions :
    VB71 MOC
    Sr. No.Part DescriptionMaterial
    1Locking Dome NutSS316
    2Lock NutSS316
    3WasherSS316
    4Handle With PVC GripSS316
    5Spring WasherStainless Steel
    6Thrust WasherPEEK
    7Stem Back-up RingPTFE
    8Stem ‘O’ RingFluorocarbon
    9Valve StemSS316
    10End ConnectorSS316
    11Connector ‘O’ RingFluorocarbon
    12Belleville WasherStainless Steel
    13Gland Back-up RingPTFE
    14Gland ‘O’ RingFluorocarbon
    15Seat GlandSS316
    16Ball SeatPEEK
    17Floating BallSS316
    18Valve BodySS316
    Standard Configuration Dimensions :
    VB71
    End ConnectionDimensions in mmDawsons-TechPart No.
    TypeSize - AOrifice CvBCEGA/F-1A/F-2
    Female NPT1/4"6.32.3441.041.042.087.028.5722.2VB71-FF4N
    3/8”8.24.3042.842.846.0101.031.7525.4VB71-FF6N
    1/2"10.26.4251.351.348.0101.034.9327.0VB71-FF8N
    3/4"12.212.4553.653.650.0101.038.131.75VB71-FF12N
    1”16.017.3562.462.453.0101.044.441.27VB71-FF16N
    Male NPT1/4"6.32.3443.043.042.087.028.5722.2VB71-MM4N
    3/8”8.24.3046.246.246.0101.031.7525.4VB71-MM6N
    1/2"10.26.4255.255.248.0101.034.9327.0VB71-MM8N
    3/4"12.212.4557.457.450.0101.038.131.75VB71-MM12N
    1”16.017.3567.367.353.0101.044.441.27VB71-MM16N
    Male x FemaleNPT1/4"6.32.3443.041.042.087.028.5722.2VB71-MF4N
    3/8”8.24.3046.242.846.0101.031.7525.4VB71-MF6N
    1/2"10.26.4255.251.348.0101.034.9327.0VB71-MF8N
    3/4"12.212.4557.453.650.0101.038.131.75VB71-MF12N
    1”16.017.3567.362.453.0101.044.441.27VB71-MF16N
    Female BSP1/4"6.32.3438.038.042.087.028.5722.2VB71-FF4RG
    3/8”8.24.3041.541.546.0101.031.7525.4VB71-FF6RG
    1/2"10.26.4249.549.548.0101.034.9327.0VB71-FF8RG
    3/4"12.212.4552.452.450.0101.038.131.75VB71-FF12RG
    1”16.017.3561.561.553.0101.044.441.27VB71-FF16RG
    FractionalTube Fittings1/4"4.81.239.339.342.087.028.5722.2VB71-TT4
    3/8”6.32.3443.843.846.0101.031.7525.4VB71-TT6
    1/2"10.26.4247.947.948.0101.034.9327.0VB71-TT8
    3/4"12.212.4550.050.050.0101.038.131.75VB71-TT12
    1”16.017.3557.757.753.0101.044.441.27VB71-TT16
    MetricTube Fittings6mm4.20.9239.839.842.087.028.5722.2VB71-TT6M
    8mm6.32.3439.839.842.087.028.5722.2VB71-TT8M
    10mm8.24.3043.843.846.0101.031.7525.4VB71-TT10M
    12mm10.26.4247.947.948.0101.034.9327.0VB71-TT12M
    16mm12.212.4550.050.050.0101.038.131.75VB71-TT16M
    25mm16.017.3557.757.753.0101.044.441.27VB71-TT25M
     Dimensions are for reference only and are subject to change.
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