DAWSONS-TECH Ball Valves Series : VB91 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.
These Valves can be used as diverting or selecting Valves for Fluid / Gas utilized in process and Instrumentations.
These Valves can be used as diverting or selecting Valves for Fluid / Gas utilized in process and Instrumentations.
Features / Benefits :
- Available in Material SS316, Material traceable to certified Material Test Report.
- 180° Low Torque Actuation, Panel Mountable.
- Can be operated manually, Pneumatically and Electrically.
- Live loaded PEEK Seat, Floating Ball design.
- Every Valve is pressure tested.
Product Range & Operating Parameters :
- Pressure Rating : UPTO 6000 PSIG (413 Bar) 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 NPT, BSPT & BSP.
Applications :
- Hydraulic
- Gas
- Instrument Air Lines
- High Pressure Instrument Lines
- General Plant Service
Type Test Approvals :
The design of DAWSONS-TECH Ball Valves Series : VB91 have been tested to Hydrostatic Proof & Burst Test in accordance to MSS SP-99-2016a Clause 5.5 & 5.6.Testing :
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 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 |
| 22 | End Connector (Inlet) | SS316 |
Standard Configuration Dimensions :
| End Connection | Dimensions in mm | Dawsons-TechPart No. | |||||||||||
| Type | Size - A | Orifice | Cv | B | C | D | E | F | G | H | I | A/F | |
| Female NPT | 1/8” | 4.2 | 0.92 | 31.9 | 31.9 | 8.6 | 34.5 | 34.3 | 30.0 | 14.8 | 4.0 | 14.27 | VB91-FF2N |
| 1/4" | 6.3 | 2.34 | 39.6 | 39.6 | 13.5 | 38.2 | 43.8 | 38.0 | 19.5 | 6.3 | 20.6 | VB91-FF4N | |
| 3/8” | 8.2 | 4.30 | 42.8 | 42.8 | 15.3 | 39.0 | 46.0 | 38.0 | 19.5 | 6.3 | 25.4 | VB91-FF6N | |
| 1/2" | 10.2 | 6.42 | 51.3 | 51.3 | 16.0 | 46.0 | 54.6 | 63.5 | 22.7 | 9.5 | 27.0 | VB91-FF8N | |
| 3/4" | 12.2 | 12.45 | 53.6 | 53.6 | 18.6 | 44.5 | 58.0 | 63.5 | 22.7 | 9.5 | 31.75 | VB91-FF12N | |
| Male NPT | 1/8” | 4.2 | 0.92 | 33.7 | 33.7 | 8.6 | 34.5 | 36.0 | 30.0 | 14.8 | 4.0 | 14.27 | VB91-MM2N |
| 1/4" | 6.3 | 2.34 | 42.0 | 42.0 | 13.5 | 38.2 | 46.2 | 38.0 | 19.5 | 6.3 | 20.6 | VB91-MM4N | |
| 3/8” | 8.2 | 4.30 | 46.2 | 46.2 | 15.3 | 39.0 | 49.2 | 38.0 | 19.5 | 6.3 | 25.4 | VB91-MM6N | |
| 1/2" | 10.2 | 6.42 | 55.2 | 55.2 | 16.0 | 46.0 | 58.5 | 63.5 | 22.7 | 9.5 | 27.0 | VB91-MM8N | |
| 3/4" | 12.2 | 12.45 | 57.4 | 57.4 | 18.6 | 44.5 | 62.0 | 63.5 | 22.7 | 9.5 | 31.75 | VB91-MM12N | |
| FractionalTube Fittings | 1/8” | 2.2 | 0.21 | 33.0 | 33.0 | 8.6 | 34.5 | 35.2 | 30.0 | 14.8 | 4.0 | 14.27 | VB91-TT2 |
| 1/4" | 4.2 | 0.92 | 34.7 | 34.7 | 8.6 | 34.5 | 37.0 | 30.0 | 14.8 | 4.0 | 14.27 | VB91-TT4 | |
| 3/8” | 6.3 | 2.34 | 40.2 | 40.2 | 13.5 | 38.2 | 44.4 | 38.0 | 19.5 | 6.3 | 20.6 | VB91-TT6 | |
| 1/2" | 10.2 | 6.42 | 47.9 | 47.9 | 16.0 | 46.0 | 51.2 | 63.5 | 22.7 | 9.5 | 27.0 | VB91-TT8 | |
| 3/4" | 12.2 | 12.45 | 50.0 | 50.0 | 18.6 | 44.5 | 54.5 | 63.5 | 22.7 | 9.5 | 31.75 | VB91-TT12 | |
| MetricTube Fittings | 3mm | 2.0 | 0.21 | 33.2 | 33.2 | 8.6 | 34.5 | 35.2 | 30.0 | 14.8 | 4.0 | 14.27 | VB91-TT3M |
| 6mm | 4.2 | 0.92 | 35.0 | 35.0 | 8.6 | 34.5 | 37.2 | 30.0 | 14.8 | 4.0 | 14.27 | VB91-TT6M | |
| 8mm | 6.3 | 2.34 | 39.8 | 39.8 | 13.5 | 38.2 | 44.0 | 38.0 | 19.5 | 6.3 | 20.6 | VB91-TT8M | |
| 10mm | 8.2 | 4.30 | 44.0 | 44.0 | 15.3 | 39.0 | 47.0 | 38.0 | 19.5 | 6.3 | 25.4 | VB91-TT10M | |
| 12mm | 10.2 | 6.42 | 47.9 | 47.9 | 16.0 | 46.0 | 51.6 | 63.5 | 22.7 | 9.5 | 27.0 | VB91-TT12M | |
| 16mm | 12.2 | 12.45 | 50.4 | 50.4 | 18.6 | 44.5 | 55.0 | 63.5 | 22.7 | 9.5 | 31.75 | VB91-TT16M | |
| Metal GasketFace Seal | 1/4" | 4.5 | 1.03 | 36.2 | 36.2 | 8.6 | 34.5 | 37.2 | 30.0 | 14.8 | 4.0 | 14.27 | VB91-GFS4 |
| 1/2" | 9.5 | 5.57 | 48.5 | 48.5 | 16.0 | 46.0 | 51.6 | 63.5 | 22.7 | 9.5 | 27.0 | VB91-GFS8 | |
| ‘O’ RingFace Seat | 1/4" | 4.5 | 1.03 | 39.5 | 39.5 | 8.6 | 34.5 | 37.2 | 30.8 | 14.8 | 4.0 | 14.27 | VB91-ORF4 |
| 1/2" | 9.5 | 5.57 | 54.5 | 54.5 | 16.0 | 46.0 | 58.5 | 63.5 | 22.7 | 9.5 | 27.0 | VB91-ORF8 | |