High Pressure Ball Valves Series : VB81


DAWSONS-TECH Ball Valves Series : VB81 offer high pressure rating UPTO 6000 PSIG (413 Bar). The design of this Ball Valve is having Live Loaded PEEK Seat, which provides repeated leak tight shut-off and also compensate for wear & pressure / Temperature changes during its operations.
Features / Benefits :
  • Available in Material SS316, Material traceable to certified Material Test Report.
  • Three-piece body design, Low torque actuation Bi-directional flow.
  • Can be operated manually, Pneumatically and Electrically.
  • Live loaded PEEK Seat, Floating Ball design, Quarter turn positive stop handle.
  • Every Valve is pressure tested.
Operating Parameters :
  • Pressure Rating : UPTO 6000 PSIG (408 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 - Fractional : 1/4” to 3/4” Tube OD
  • Metric : 6mm to 16mm Tube OD
  • Pipe Threads: 1/4” to 3/4” 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 :
    Sr. No. Part Description Material
    1 Handle Nylon
    2 Handle Set Screw SS316
    3 Stem SS316
    4 Packing Nut SS316
    5 Panel Nut SS316
    6 Stem Bearing PEEK
    7 Seal Retainer SS316
    8 ‘O’ Ring Fluorocarbon
    9 Back-up Ring PTFE
    10 Stem Washer SS316
    11 End Connector SS316
    12 Connector ‘O’ Ring Fluorocarbon
    13 Belleville Washers Stainless Steel
    14 Valve Body SS316
    15 Floating Ball SS316
    16 Valve Seat PEEK
    17 ‘O’ Ring Fluorocarbon
    18 Back-up Ring PTFE
    19 Seat Support SS316

    End Connection Flow Data Dimensions in mm Dawsons-Tech Part No.
    Type Size - A Orifice (mm) Cv B C D E F G H I
    Female NPT 1/4" 5.0 0.87 41.0 41.0 44.0 15.2 38.9 38.1 19.6 6.4 VB81-FFF4N
    3/8” 10.3 3.62 43.0 43.0 58.2 18.8 44.2 63.5 22.9 9.7 VB81-FFF6N
    1/2" 10.3 3.62 51.5 51.5 63.2 18.8 44.2 63.5 22.9 9.7 VB81-FFF8N
    3/4" 10.3 6.42 54.5 54.5 65.8 18.8 44.2 63.5 22.9 9.7 VB81-FFF12N
    Male NPT 1/4" 5.0 0.87 43.3 43.3 46.7 15.2 38.9 38.1 19.6 6.4 VB81-MMM4N
    3/8” 5.0 0.87 48.0 48.0 46.7 15.2 38.9 38.1 19.6 6.4 VB81-MMM6N
    1/2" 10.3 3.62 53.2 53.2 65.8 18.8 44.2 63.5 22.9 9.7 VB81-MMM8N
    3/4" 10.3 3.62 53.2 53.2 65.8 18.8 44.2 63.5 22.9 9.7 VB81-MMM12N
    Fractional Tube Fitting 1/4" 4.7 0.70 45.7 45.7 49.5 15.2 38.9 38.1 19.6 6.4 VB81-TTT4
    3/8” 5.0 0.87 50.5 50.5 51.3 15.2 38.9 38.1 19.6 6.4 VB81-TTT6
    1/2" 10.3 3.62 56.7 56.7 68.0 18.8 44.2 63.5 22.9 9.7 VB81-TTT8
    3/4" 10.3 3.62 61.3 61.3 68.0 18.8 44.2 63.5 22.9 9.7 VB81-TTT12
    Metric Tube Fitting 6mm 4.2 0.70 45.7 45.7 49.5 15.2 38.9 38.1 19.6 6.4 VB81-TTT6M
    8mm 5.0 0.87 46.5 46.5 50.5 15.2 38.9 38.1 19.6 6.4 VB81-TTT8M
    10mm 5.0 0.87 50.5 50.5 51.3 15.2 38.9 38.1 19.6 6.4 VB81-TTT10M
    12mm 9.5 3.46 56.7 56.7 68.0 18.8 44.2 63.5 22.9 9.7 VB81-TTT12M
    16mm 10.3 3.62 110.0 110.0 68.0 18.8 44.2 63.5 22.9 9.7 VB81-TTT16M
    Metal Gasket Face Seal 1/4" 4.6 0.68 41.0 41.0 35.8 15.2 38.9 38.1 19.6 6.4 VB81-GFS4
    1/2" 9.5 3.46 47.9 47.9 57.7 18.8 44.2 63.5 22.9 9.7 VB81-GFS8
    ‘O’ Ring Face Seal 1/4" 4.6 0.70 47.2 47.2 39.1 15.2 38.9 38.1 19.6 6.4 VB81-ORF4
    1/2" 10.3 3.62 55.2 55.2 65.0 18.8 44.2 63.5 22.9 9.7 VB81-ORF8
      Dimensions are for reference only and are subject to change.