AVK CENTRIC DOUBLE FL. BUTTERFLY VALVE, PN 10/16
Long, fixed NBR liner for gas, stainless steel disc
Contact
AVK Industrial Nederland BV
Schorsweg 1 8171 ME Vaassen Netherlands
Centric butterfly valve with fixed liner - double flanged long - AISI 431 disc for gas to max. 50°C
AVK centric butterfly valves with fixed liner feature an outstanding seating concept. The rubber is injection moulded directly on the valve body forming a permanent bond. Consequently, there is no risk of deformation or dislocation of the liner making the valves suitable under vacuum conditions. The combination of the profiled disc edge and the excellent AVK rubber quality ensures maximum durability of the liner.
| Variant 75/21-033 | |
|---|---|
| Connection: | Flanged |
| Material: | Ductile iron |
| DN: | DN80 - DN500 |
| PN: | PN 16 |
Features
Bonded vulcanized liner of NBR approved for gas applications with an excellent compression set and thus ability to regain its original shape
Streamlined disc with minimum flow resistance
Profiled disc edge requires minimal deformation of the liner to achieve tight sealing, and results in less wear of the liner
Disc, shaft and conical pin of stainless steel
Shaft bearings of PTFE coated steel
Top shaft sealing: DN≤350: Bronze bushing with two EPDM O-rings, DN≥400: EPDM O-ring in bushing fixed with countersunk screws of galvanized steel
Bottom shaft sealing: DN≤350: Plug of galvanized steel with a copper sealing ring, DN≥400: Axial bearing and ring of alubronze and an EPDM O-ring, protected by a cover plate of galvanized steel
Low torques as a result of the profiled disc edge and fixed liner design
Ductile iron body with 80 μ PUR orange RAL 2000
Downloads
Reference nos. and dimensions:
| AVK ref. no. | DN mm |
Flange drilling |
L mm |
H1 mm |
H2 mm |
F2 mm |
L5 mm |
Actuat, flange |
Theoretical weight/kg |
|---|---|---|---|---|---|---|---|---|---|
| 75-0080-21-2110026000 | 80 | PN16 | 180 | 133 | 138 | 34 | 12 | 90 | 17 |
| 75-0500-21-2110013000 | 500 | PN10 | 350 | 413 | 360 | 50 | 25 | 175 | 230 |
Components
| 1. | Shaft | Stainless steel AISI 431 |
| 2. | Bushing | Bronze |
| 3. | O-ring | NBR rubber |
| 4. | Body | Ductile iron GJS-400-15 |
| 5. | Bearing | Steel, PTFE coated |
| 6. | Conical pin | Stainless steel AISI 431 |
| 7. | Disc | Stainless steel AISI 431 |
| 8. | Shaft | Stainless steel AISI 431 |
| 9. | Liner | NBR rubber |
| 10. | Bearing | Steel, PTFE coated |
| 11. | Seal ring | Copper |
| 12. | Plug | Steel, galvanized |
| 13. | Screw | Steel, galvanized |
| 14. | Ring | Alu-bronze |
| 15. | O-ring | NBR rubber |
| 16. | Thrust bearing | Alu-bronze |
| 17. | Cover plate | Steel, galvanized |
| 18. | Screw | Steel, galvanized |
Test/Approvals
- Hydraulic test according to EN 13774 / EN 12266, Hydraulic test according to EN 13774 / EN 12266
- Approved according to DIN-DVGW Certificate NG-4313BN0603
- Approved according to SVGW Certificate No. 06-080-5
Standards
- EN 593
- Face-to-face dimension according to EN 558, Series 14
- Flange drilling to EN1092, PN16
