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Two Way Ball Valve Series : VB81
- Index
- Features & Benefits
- Operating Parameters
- Material of Constructions
- Dimensions
- Ordering Information
Two Way Ball Valves
(Panel Mountable with Live Load System)
Series : VB81
DAWSONS-TECH® Ball Valves Series : VB81 with Live Loaded PEEK Seat provides repeated leak tight shut off and also compensate for wear and Pressure / Temperature fluctuations during its operations. This 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 with Panel mounting body
- 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 413 Bar (6000 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 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 : 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 Description | Material |
| 1 | Handle With Brass Insert | Nylon |
| 2 | Grub Screw | SS316 |
| 3 | Panel Nut | SS316 |
| 4 | Packing Nut | SS316 |
| 5 | Stem Bearing | PEEK |
| 6 | Stem Washer | PEEK |
| 7 | Stem ‘O’ Ring | Fluorocarbon |
| 8 | Stem Back-up Ring | PTFE |
| 9 | Stem Seal Retainer | SS316 |
| 10 | Retainer Back-up Ring | PTFE |
| 11 | Retainer ‘O’ Ring | Fluorocarbon |
| 12 | Valve Stem | SS316 |
| 13 | End Connector | SS316 |
| 14 | Connector ‘O’ Ring | Fluorocarbon |
| 15 | Belleville Washers | Stainless Steel |
| 16 | Gland Back-up Ring | PTFE |
| 17 | Gland ‘O’ Ring | Fluorocarbon |
| 18 | Seat Gland | SS316 |
| 19 | Ball Seat | PEEK |
| 20 | Floating Ball | SS316 |
| 21 | Valve Body | SS316 |
| End Connection | Dimensions in mm | Dawsons-Tech Part No. | ||||||||||
| Type | Size – A | Orifice | Cv | B | C | D | E | G | H | I | A/F | |
| Female NPT | 1/8” | 4.2 | 0.92 | 31.9 | 31.9 | 8.6 | 34.5 | 30.0 | 14.8 | 4.0 | 14.27 | VB81-FF2N |
| 1/4” | 6.3 | 2.34 | 39.6 | 39.6 | 13.5 | 38.2 | 38.0 | 19.5 | 6.3 | 20.6 | VB81-FF4N | |
| 3/8” | 8.2 | 4.30 | 42.8 | 42.8 | 15.3 | 39.0 | 38.0 | 19.5 | 6.3 | 25.4 | VB81-FF6N | |
| 1/2″ | 10.2 | 6.42 | 51.3 | 51.3 | 16.0 | 46.0 | 63.5 | 22.7 | 9.5 | 27.0 | VB81-FF8N | |
| 3/4″ | 12.2 | 12.45 | 53.6 | 53.6 | 18.6 | 44.5 | 63.5 | 22.7 | 9.5 | 31.75 | VB81-FF12N | |
| Male NPT | 1/8” | 4.2 | 0.92 | 33.7 | 33.7 | 8.6 | 34.5 | 30.0 | 14.8 | 4.0 | 14.27 | VB81-MM2N |
| 1/4” | 6.3 | 2.34 | 42.0 | 42.0 | 13.5 | 38.2 | 38.0 | 19.5 | 6.3 | 20.6 | VB81-MM4N | |
| 3/8” | 8.2 | 4.30 | 46.2 | 46.2 | 15.3 | 39.0 | 38.0 | 19.5 | 6.3 | 25.4 | VB81-MM6N | |
| 1/2″ | 10.2 | 6.42 | 55.2 | 55.2 | 16.0 | 46.0 | 63.5 | 22.7 | 9.5 | 27.0 | VB81-MM8N | |
| 3/4″ | 12.2 | 12.45 | 57.4 | 57.4 | 18.6 | 44.5 | 63.5 | 22.7 | 9.5 | 31.75 | VB81-MM12N | |
| Male x Female NPT | 1/8” | 4.2 | 0.92 | 33.7 | 31.9 | 8.6 | 34.5 | 30.0 | 14.8 | 4.0 | 14.27 | VB81-MF2N |
| 1/4” | 6.3 | 2.34 | 42.0 | 39.6 | 13.5 | 38.2 | 38.0 | 19.5 | 6.3 | 20.6 | VB81-MF4N | |
| 3/8” | 8.2 | 4.30 | 46.2 | 42.0 | 15.3 | 39.0 | 38.0 | 19.5 | 6.3 | 25.4 | VB81-MF6N | |
| 1/2″ | 10.2 | 6.42 | 55.2 | 51.3 | 16.0 | 46.0 | 63.5 | 22.7 | 9.5 | 27.0 | VB81-MF8N | |
| 3/4″ | 12.2 | 12.45 | 57.4 | 53.6 | 18.6 | 44.5 | 63.5 | 22.7 | 9.5 | 31.75 | VB81-MF12N | |
| Fractional Tube Fittings | 1/8” | 2.2 | 0.21 | 33.0 | 33.0 | 8.6 | 34.5 | 30.0 | 14.8 | 4.0 | 14.27 | VB81-TT2 |
| 1/4” | 4.2 | 0.92 | 34.7 | 34.7 | 8.6 | 34.5 | 30.0 | 14.8 | 4.0 | 14.27 | VB81-TT4 | |
| 3/8” | 6.3 | 2.34 | 40.2 | 40.2 | 13.5 | 38.2 | 38.0 | 19.5 | 6.3 | 20.6 | VB81-TT6 | |
| 1/2″ | 10.2 | 6.42 | 47.9 | 47.9 | 16.0 | 46.0 | 63.5 | 22.7 | 9.5 | 27.0 | VB81-TT8 | |
| 3/4″ | 12.2 | 12.45 | 50.0 | 50.0 | 18.6 | 44.5 | 63.5 | 22.7 | 9.5 | 31.75 | VB81-TT12 | |
| Metric Tube Fittings | 3mm | 2.0 | 0.21 | 33.0 | 33.0 | 8.6 | 34.5 | 30.0 | 14.8 | 4.0 | 14.27 | VB81-TT3M |
| 6mm | 4.2 | 0.92 | 34.7 | 34.7 | 8.6 | 34.5 | 30.0 | 14.8 | 4.0 | 14.27 | VB81-TT6M | |
| 8mm | 6.3 | 2.34 | 39.8 | 39.8 | 13.5 | 38.2 | 38.0 | 19.5 | 6.3 | 20.6 | VB81-TT8M | |
| 10mm | 8.2 | 4.30 | 44.0 | 44.0 | 15.3 | 39.0 | 38.0 | 19.5 | 6.3 | 25.4 | VB81-TT10M | |
| 12mm | 10.2 | 6.42 | 47.9 | 47.9 | 16.0 | 46.0 | 63.5 | 22.7 | 9.5 | 27.0 | VB81-TT12M | |
| 16mm | 12.2 | 12.45 | 50.4 | 50.4 | 18.6 | 44.5 | 63.5 | 22.7 | 9.5 | 31.75 | VB81-TT16M | |
Dimensions are for reference only and are subject to change.