High Pressure Ball Valve 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 DescriptionMaterial
    1HandleNylon
    2Handle Set ScrewSS316
    3StemSS316
    4Packing NutSS316
    5Panel NutSS316
    6Stem BearingPEEK
    7Seal RetainerSS316
    8‘O’ RingFluorocarbon
    9Back-up RingPTFE
    10Stem WasherSS316
    11End ConnectorSS316
    12Connector ‘O’ RingFluorocarbon
    13Belleville WashersStainless Steel
    14Valve BodySS316
    15Floating BallSS316
    16Valve SeatPEEK
    17‘O’ RingFluorocarbon
    18Back-up RingPTFE
    19Seat SupportSS316

    Standard Configuration Dimensions :
    End ConnectionFlow DataDimensions in mmDawsons-Tech Part No.
    TypeSize - AOrifice (mm)CvBCDEFGHI
    Female NPT1/4"6.42.3441.041.014.015.238.938.119.66.4VB81-FF4N
    3/8”10.36.4243.043.017.418.844.263.522.99.7VB81-FF6N
    1/2"10.36.4251.551.517.418.844.263.522.99.7VB81-FF8N
    3/4"10.36.4254.554.517.418.844.263.522.99.7VB81-FF12N
    Male NPT1/4"4.81.2043.343.314.015.238.938.119.66.4VB81-MM4N
    3/8”6.42.3445.445.414.015.238.938.119.66.4VB81-MM6N
    1/2"10.36.4253.253.217.418.844.263.522.99.7VB81-MM8N
    3/4"10.36.4255.555.517.418.844.263.522.99.7VB81-MM12N
    Fractional Tube Fitting1/4"4.81.2045.845.814.015.238.938.119.66.4VB81-TT4
    3/8”6.42.3450.250.214.015.238.938.119.66.4VB81-TT6
    1/2"10.36.4257.057.017.418.844.263.522.99.7VB81-TT8
    3/4"10.36.4261.361.317.418.844.263.522.99.7VB81-TT12
    Metric Tube Fitting6mm4.20.9345.845.814.015.238.938.119.66.4VB81-TT6M
    8mm6.42.3446.546.514.015.238.938.119.66.4VB81-TT8M
    10mm6.42.3450.550.514.015.238.938.119.66.4VB81-TT10M
    12mm9.55.5757.057.017.418.844.263.522.99.7VB81-TT12M
    16mm10.36.4260.060.017.418.844.263.522.99.7VB81-TT16M
    Metal Gasket Face Seal1/4"4.61.0341.041.014.015.238.938.119.66.4VB81-GFS4
    1/2"9.55.5747.947.917.418.844.263.522.99.7VB81-GFS8
    ‘O’ Ring Face Seal1/4"4.61.0347.247.214.015.238.938.119.66.4VB81-ORF4
    1/2"10.36.4255.255.217.418.844.263.522.99.7VB81-ORF8
      Dimensions are for reference only and are subject to change.