AVK CENTRIC BUTTERFLY VALVE, DOUBLE FLANGED, PN16
Short, fixed EPDM liner, PA coated disc, DN250-1000
Contact
AVK International A/S
Bizonvej 1, Skovby, 8464 Galten, Denmark
Centric butterfly valve with fixed liner - double flanged short - PA coated disc for water and neutral liquids to max. 110°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 75/20-202 | |
|---|---|
| Connection: | Flanged |
| Material: | Ductile Iron |
| DN: | DN250 - DN1000 |
| PN: | PN16 |
| Closing direction: | Clockwise to Close |
Features
- Bonded vulcanized liner of drinking water approved EPDM 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 of rilsan coated ductile iron, and 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 200 μ epoxy coating blue RAL 5017
Downloads
Datasheet
Appendix
Certificate(s)
Installation, Operation & Maintenance
Outline drawings STEP
Reference nos. and dimensions:
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| AVK ref. no. | DN mm |
Flange drilling |
L mm |
H1 mm |
H2 mm |
F mm |
F2 mm |
L5 mm |
Actuator Flange |
Theoretical weight/kg |
|---|---|---|---|---|---|---|---|---|---|---|
| 75-0250-20-225102614200 | 250 | PN16 | 165 | 245 | 194 | 24 | 45 | 15 | 125 | 50 |
| 75-0300-20-225102614200 | 300 | PN16 | 178 | 270 | 219 | 24 | 45 | 15 | 125 | 65 |
| 75-0350-20-225102614200 | 350 | PN16 | 190 | 315 | 256 | 24 | 45 | 15 | 125 | 95 |
| 75-0400-20-225102614200 | 400 | PN16 | 216 | 363 | 308 | 30 | 50 | 25 | 175 | 130 |
| 75-0450-20-225102614200 | 450 | PN16 | 222 | 388 | 334 | 30 | 50 | 25 | 175 | 150 |
| 75-0500-20-225102614200 | 500 | PN16 | 229 | 413 | 360 | 30 | 50 | 25 | 175 | 200 |
| 75-0600-20-225102614200 | 600 | PN16 | 267 | 510 | 426 | 40 | 50 | 25 | 175 | 300 |
| 75-0700-20-225102614200 | 700 | PN16 | 292 | 560 | 480 | 46 | 60 | 25 | 210 | 380 |
| 75-0800-20-225102614200 | 800 | PN16 | 318 | 610 | 525 | 46 | 60 | 25 | 210 | 500 |
| 75-0900-20-225102614200 | 900 | PN16 | 330 | 690 | 635 | 60 | 90 | 30 | 300 | 660 |
| 75-1000-20-225102614200 | 1000 | PN16 | 410 | 740 | 685 | 60 | 90 | 30 | 350 | 900 |
Enquiry
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Components
| 1. | Shaft | Stainless steel |
| 2. | Bushing | Bronze |
| 3. | O-ring | EPDM rubber |
| 4. | Body | Ductile iron GJS-400-15 (GGG-40) |
| 5. | Bearing | Steel, PTFE coated |
| 6. | Conical pin | Stainless steel |
| 7. | Disc | Ductile iron |
| 8. | Shaft | Stainless steel 1.4057 |
| 9. | Liner | EPDM 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 | EPDM rubber |
| 16. | Thrust bearing | Alu-bronze |
| 17. | Cover plate | Steel, galvanized |
| 18. | Screw | Steel, galvanized |
Test/Approvals
- Hydraulic test according to EN 1074-1 and 2 / EN 12266
- Approved according to KIWA Certificate K92888/05
- Approved according to DVGW Certificate NW-6201DL0202
Standards
- Face-to-face dimension according to EN 558 Table 2 Basic Series 13
- Standard flange drilling to EN1092-2 (ISO 7005-2), PN16
