Two Way Ball Valve Series : VB71

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Ball Valves

Two Way Ball Valves

Series : VB71

DAWSONS-TECH® Ball Valves Series : VB71 with live loaded PEEK Seat provides repeated leak tight shut off and also compensate for wear and pressure / temperature fluctuations during its operations. These Valves are most suitable to be used in Fluid / Gas Control System in wide range of industrial segments.

Features / Benefits :

  • Available in Material SS316
  • Three-piece body design
  • Low torque actuation Bi-directional flow
  • Live loaded PEEK seat
  • Floating Ball design
  • Quarter turn positive stop handle
  • Every Valve is pressure tested

Product Range & Operating Parameters :

  • Pressure Rating : UPTO 680 Bar (10,000 PSIG) at CWP with PTFE packing, PEEK Seat and Fluorocarbon ‘O’ Ring
  • Temperature Rating : 54°C to 180°C (depending on ‘O’ Ring Material)
  • End Connections
    • Fractional 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 : VB43 have been tested to Hydrostatic Proof and Burst Test in accordance with 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 Valve Body Material and pressure test will be provided on request.

Material of Construction :

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
End Connection Dimensions in mm Dawsons-Tech Part No.
Type Size – A Orifice Cv B C E G A/F-1 A/F-2
Female NPT 1/4″ 6.3 2.34 41.0 41.0 42.0 87.0 28.57 22.2 VB71-FF4N
3/8” 8.2 4.30 42.8 42.8 46.0 101.0 31.75 25.4 VB71-FF6N
1/2″ 10.2 6.42 51.3 51.3 48.0 101.0 34.93 27.0 VB71-FF8N
3/4″ 12.2 12.45 53.6 53.6 50.0 101.0 38.1 31.75 VB71-FF12N
1” 16.0 17.35 62.4 62.4 53.0 101.0 44.4 41.27 VB71-FF16N
Male NPT 1/4″ 6.3 2.34 43.0 43.0 42.0 87.0 28.57 22.2 VB71-MM4N
3/8” 8.2 4.30 46.2 46.2 46.0 101.0 31.75 25.4 VB71-MM6N
1/2″ 10.2 6.42 55.2 55.2 48.0 101.0 34.93 27.0 VB71-MM8N
3/4″ 12.2 12.45 57.4 57.4 50.0 101.0 38.1 31.75 VB71-MM12N
1” 16.0 17.35 67.3 67.3 53.0 101.0 44.4 41.27 VB71-MM16N
Male x Female NPT 1/4″ 6.3 2.34 43.0 41.0 42.0 87.0 28.57 22.2 VB71-MF4N
3/8” 8.2 4.30 46.2 42.8 46.0 101.0 31.75 25.4 VB71-MF6N
1/2″ 10.2 6.42 55.2 51.3 48.0 101.0 34.93 27.0 VB71-MF8N
3/4″ 12.2 12.45 57.4 53.6 50.0 101.0 38.1 31.75 VB71-MF12N
1” 16.0 17.35 67.3 62.4 53.0 101.0 44.4 41.27 VB71-MF16N
Female BSP 1/4″ 6.3 2.34 38.0 38.0 42.0 87.0 28.57 22.2 VB71-FF4RG
3/8” 8.2 4.30 41.5 41.5 46.0 101.0 31.75 25.4 VB71-FF6RG
1/2″ 10.2 6.42 49.5 49.5 48.0 101.0 34.93 27.0 VB71-FF8RG
3/4″ 12.2 12.45 52.4 52.4 50.0 101.0 38.1 31.75 VB71-FF12RG
1” 16.0 17.35 61.5 61.5 53.0 101.0 44.4 41.27 VB71-FF16RG
Fractional Tube Fittings 1/4″ 4.8 1.2 39.3 39.3 42.0 87.0 28.57 22.2 VB71-TT4
3/8” 6.3 2.34 43.8 43.8 46.0 101.0 31.75 25.4 VB71-TT6
1/2″ 10.2 6.42 47.9 47.9 48.0 101.0 34.93 27.0 VB71-TT8
3/4″ 12.2 12.45 50.0 50.0 50.0 101.0 38.1 31.75 VB71-TT12
1” 16.0 17.35 57.7 57.7 53.0 101.0 44.4 41.27 VB71-TT16
Metric Tube Fittings 6mm 4.2 0.92 39.8 39.8 42.0 87.0 28.57 22.2 VB71-TT6M
8mm 6.3 2.34 39.8 39.8 42.0 87.0 28.57 22.2 VB71-TT8M
10mm 8.2 4.30 43.8 43.8 46.0 101.0 31.75 25.4 VB71-TT10M
12mm 10.2 6.42 47.9 47.9 48.0 101.0 34.93 27.0 VB71-TT12M
16mm 12.2 12.45 50.0 50.0 50.0 101.0 38.1 31.75 VB71-TT16M
25mm 16.0 17.35 57.7 57.7 53.0 101.0 44.4 41.27 VB71-TT25M

Dimensions are for reference only and are subject to change.

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