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
    1Handle With Brass InsertNylon
    2Grub ScrewSS316
    3Panel NutSS316
    4Packing NutSS316
    5Stem BearingPEEK
    6Stem WasherPEEK
    7Stem ‘O’ RingFluorocarbon
    8Stem Back-up RingPTFE
    9Stem Seal RetainerSS316
    10Retainer Back-up RingPTFE
    11Retainer ‘O’ RingFluorocarbon
    12Valve StemSS316
    13End ConnectorSS316
    14Connector ‘O’ RingFluorocarbon
    15Belleville WashersStainless Steel
    16Gland Back-up RingPTFE
    17Gland ‘O’ RingFluorocarbon
    18Seat GlandSS316
    19Ball SeatPEEK
    20Floating BallSS316
    21Valve BodySS316

    Standard Configuration Dimensions :
    End ConnectionDimensions in mmDawsons-Tech Part No.
    TypeSize - AOrificeCvBCDEGHIA/F
    Female NPT1/8”4.20.9231.931.98.634.530.014.84.014.27VB81-FF2N
    1/4”6.32.3439.639.613.538.238.019.56.320.6VB81-FF4N
    3/8”8.24.3042.842.815.339.038.019.56.325.4VB81-FF6N
    1/2"10.26.4251.351.316.046.063.522.79.527.0VB81-FF8N
    3/4"12.212.4553.653.618.644.563.522.79.531.75VB81-FF12N
    Male NPT1/8”4.20.9233.733.78.634.530.014.84.014.27VB81-MM2N
    1/4”6.32.3442.042.013.538.238.019.56.320.6VB81-MM4N
    3/8”8.24.3046.246.215.339.038.019.56.325.4VB81-MM6N
    1/2"10.26.4255.255.216.046.063.522.79.527.0VB81-MM8N
    3/4"12.212.4557.457.418.644.563.522.79.531.75VB81-MM12N
    Male x Female NPT1/8”4.20.9233.731.98.634.530.014.84.014.27VB81-MF2N
    1/4”6.32.3442.039.613.538.238.019.56.320.6VB81-MF4N
    3/8”8.24.3046.242.015.339.038.019.56.325.4VB81-MF6N
    1/2"10.26.4255.251.316.046.063.522.79.527.0VB81-MF8N
    3/4"12.212.4557.453.618.644.563.522.79.531.75VB81-MF12N
    Fractional Tube Fittings1/8”2.20.2133.033.08.634.530.014.84.014.27VB81-TT2
    1/4”4.20.9234.734.78.634.530.014.84.014.27VB81-TT4
    3/8”6.32.3440.240.213.538.238.019.56.320.6VB81-TT6
    1/2"10.26.4247.947.916.046.063.522.79.527.0VB81-TT8
    3/4"12.212.4550.050.018.644.563.522.79.531.75VB81-TT12
    Metric Tube Fittings3mm2.00.2133.033.08.634.530.014.84.014.27VB81-TT3M
    6mm4.20.9234.734.78.634.530.014.84.014.27VB81-TT6M
    8mm6.32.3439.839.813.538.238.019.56.320.6VB81-TT8M
    10mm8.24.3044.044.015.339.038.019.56.325.4VB81-TT10M
    12mm10.26.4247.947.916.046.063.522.79.527.0VB81-TT12M
    16mm12.212.4550.450.418.644.563.522.79.531.75VB81-TT16M
    Metal Gasket Face Seal1/4"4.51.0336.236.28.634.530.014.84.014.27VB81-GFS4
    1/2"9.55.5748.548.516.046.063.522.79.527.0VB81-GFS8
    ‘O’ Ring Face Seal1/4"4.51.0339.539.58.634.530.014.84.014.27VB81-ORF4
    1/2"9.55.5754.554.516.046.063.522.79.527.0VB81-ORF8
      Dimensions are for reference only and are subject to change.