Donkin Clear Bore Ball Valves
Limited Dimension
Andy Hatton
National Sales Manager – Gas
Screwed Full Bore Ball Valve to GIS/V4. Maximum Working Pressure: 7 Bar (100 psig). Temperature Range: -10°C to +50°C
The Series 455/57 are high quality, clear bore, general service ball valves, which are ideal for gas isolation and suitable for use with under-pressure drilling equipment. The LD (limited dimension) version has been designed for tapping directly into live gas mains and is suitable for combined drilling, tapping and service insertion machines to BGC/PS/E1.
| Variant 455/57-001 | |
|---|---|
| Connection: | No connection type specified |
| Material: | Ductile Iron |
| DN: | DN20 - DN25 |
| PN: | PN 7 |
| Closing direction: | Clockwise to Close |
Features
- Maintenance free compact design
- Kitemark™ approved to GIS/V4
- Pre-loaded PTFE seats
- One piece body
- High torque design to prevent unauthorised operation
- One size false cap fits all sizes
- Totally enclosed design for buried service
- Design ensures minimum pressure drop
- Full clear bore for under pressure drilling
- Embodied carbon data available upon request
Downloads
Installation, Operation & Maintenance
Price list
Datasheet
Guidelines
Certificate(s)
Reference nos. and dimensions:
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| Ref. no. | DN mm |
Operating Direction |
D mm |
Dd mm |
BSP thread Inch |
H mm |
H3 mm |
L mm |
W mm |
Theoretical weight/kg |
|---|---|---|---|---|---|---|---|---|---|---|
| 455-002-21-571 | 20 | CTC | 58 | 18 | 3/4" | 61 | 90 | 120 | 58 | 0.9 |
| 455-003-21-571 | 25 | CTC | 70 | 23 | 1" | 66 | 101 | 124 | 70 | 1.6 |
3D drawings
Enquiry
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Components
| 1. | Body | Ductile iron GJS-400-15 |
| 2. | Ball | Stainless steel |
| 3. | Seat | PTFE |
| 4. | Stem | Stainless steel |
| 5. | O-ring | NBR rubber |
| 6. | O-ring | NBR rubber |
| 7. | Stem Cap | Ductile iron |
| 8. | Dust Cap | Stainless steel |
| 9. | Bolt | Steel 8.8 |
| 10. | Spring | Steel |
| 11. | Body end | Mild steel |
| 12. | Grub screw | Steel 8.8 |
| 13. | Nut | |
| 14. | Collar | |
| 15. | Seal | NBR rubber |
Test/Approvals
- Approved according to Kitemark™ GIS/V4
Standards
- EN 12266, Designed according to GIS/E1, Designed according to GIS/V4
