High Pressure Ball Valves Series : VB71

DAWSONS-TECH Ball Valve Series : VB71 Three piece bi-directional flow Ball Valves offer high pressure rating up to 7500 PSIG (510 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.
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.
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    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
    1 Handle with PVC Grip SS316
    2 Locking Dome Nut SS316
    3 Lock Nut SS316
    4 Anti-blowout stem SS316
    5 Spring Washer SS316
    6 Thrust Washer SS316
    7 Thrust Ring PEEK
    8 Backup Ring PTFE
    9 ‘O’ Ring VITON
    10 Thrust Ring PEEK
    11 End Connector SS316
    12 ‘O’ Ring VITON
    13 DISC Spring STAINLESS STEEL
    14 Body SS316
    15 Ball SS316
    16 Ball Seat PEEK
    17 ‘O’ Ring VITON
    18 Backup Ring PTFE
    19 Seat supporter SS316
    VB71 FOR TABLE
    End Connection Flow Data Dimensions in mm Dawsons-Tech Part No.
    Type Size - A Orifice (mm) Cv B C D E A/F-1 A/F-2
    Female NPT 1/4" 6.4 2.34 41.0 41.0 42.0 87.0 28.57 22.20 VB71-FF4N
    3/8” 8.3 4.30 43.0 43.0 46.0 101.0 31.75 25.40 VB71-FF6N
    1/2" 10.3 6.42 51.5 51.5 48.0 101.0 34.93 27.00 VB71-FF8N
    3/4" 12.2 12.45 54.5 54.5 50.0 101.0 38.10 31.75 VB71-FF12N
    1” 15.0 17.35 61.8 61.8 53.0 101.0 44.40 41.27 VB71-FF16N
    Male NPT 1/4" 4.8 1.20 43.3 41.0 42.0 87.0 28.57 22.20 VB71-MM4N
    3/8” 6.4 2.34 45.4 43.0 46.0 101.0 31.75 25.40 VB71-MM6N
    1/2" 10.3 6.42 53.2 51.5 48.0 101.0 34.93 27.00 VB71-MM8N
    3/4" 10.3 6.42 55.8 54.5 50.0 101.0 38.10 31.75 VB71-MM12N
    1” 15.0 17.35 65.8 61.8 53.0 101.0 44.40 41.27 VB71-MM16N
    Female BSP 1/4" 6.4 2.34 41.0 41.0 42.0 87.0 28.57 22.20 VB71-FF4RG
    3/8” 8.3 4.30 43.0 43.0 46.0 101.0 31.75 25.40 VB71-FF6RG
    1/2" 10.3 6.42 51.5 51.5 48.0 101.0 34.93 27.00 VB71-FF8RG
    3/4" 12.2 12.45 54.5 54.5 50.0 101.0 38.10 31.75 VB71-FF12RG
    1” 15.0 17.35 61.8 61.8 53.0 101.0 44.40 41.27 VB71-FF16RG
    Fractional Tube Fitting 1/4" 4.8 1.20 45.8 45.8 42.0 87.0 28.57 22.20 VB71-TT4
    3/8” 6.4 2.34 50.5 50.5 46.0 101.0 31.75 25.40 VB71-TT6
    1/2" 10.3 6.42 57.0 57.0 48.0 101.0 34.93 27.00 VB71-TT8
    3/4" 12.2 12.45 61.3 61.3 50.0 101.0 38.10 31.75 VB71-TT12
    1” 15.0 17.35 70.5 70.5 53.0 101.0 44.40 41.27 VB71-TT16
    Metric Tube Fitting 6mm 4.2 0.93 45.8 45.8 42.0 87.0 28.57 22.20 VB71-TT6M
    8mm 6.4 2.34 46.5 46.5 42.0 101.0 28.57 22.20 VB71-TT8M
    10mm 6.4 2.34 50.5 50.5 46.0 101.0 31.75 25.40 VB71-TT10M
    12mm 9.5 5.57 57.0 57.0 48.0 101.0 34.93 27.00 VB71-TT12M
    16mm 10.3 6.42 60.0 60.0 50.0 101.0 38.10 31.75 VB71-TT16M
    25mm 15.0 17.35 70.5 70.5 53.0 101.0 44.40 41.27 VB71-TT25M
      Dimensions are for reference only and are subject to change.
    Ordering Information