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AVK CENTRIC BUTTERFLY VALVE, DOUBLE FLANGED, PN10/16

Long, fixed EPDM liner, duplex/rilsan coated disc, DN50-1000

AVK headquater in Skovby Galten, Denmark

Contact

AVK International A/S

Bizonvej 1, Skovby, 8464 Galten, Denmark

Centric butterfly valve with fixed liner - double flanged long - duplex/rilsan 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 75/21-020
Connection: Flanged
Material: Ductile Iron
DN: DN50 - DN1000

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, shaft and conical pin of duplex steel in DN≤200. Disc of rilsan coated ductile iron, and shaft and conical pin of stainless steel in DN≥250
  • 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
Tender Text
Animation
AVK_centric_butterfly_valve_fixedliner_animation.mp4
Certificate(s)

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		 Notes
75-0050-21-223002614200 50 PN10/16 150 118 63 10 34 12 90 11 Disc material in duplex
75-0065-21-223002614200 65 PN10/16 170 126 71 10 34 12 90 13 Disc material in duplex
75-0080-21-223002614200 80 PN10/16 180 133 78 10 34 12 90 17 Disc material in duplex
75-0100-21-223002614200 100 PN10/16 190 147 98 12 34 12 90 20 Disc material in duplex
75-0125-21-223002614200 125 PN10/16 200 160 109 12 34 12 90 26 Disc material in duplex
75-0150-21-223002614200 150 PN10/16 210 180 133 16 34 14 90 31 Disc material in duplex
75-0200-21-223001314200 200 PN10 230 204 158 16 34 14 90 45 Disc material in duplex
75-0250-21-225101314200 250 PN10 250 245 194 24 45 15 125 70
75-0300-21-225101314200 300 PN10 270 270 219 24 45 15 125 90
75-0350-21-225101314200 350 PN10 290 315 256 24 45 15 125 120
75-0400-21-225101314200 400 PN10 310 363 308 30 50 25 175 165
75-0450-21-225101314200 450 PN10 330 388 334 30 50 25 175 200
75-0500-21-225101314200 500 PN10 350 413 360 30 50 25 175 230
75-0600-21-225101314200 600 PN10 390 510 426 40 50 25 175 320
75-0700-21-225101314200 700 PN10 430 560 480 46 60 25 210 420
75-0800-21-225101314200 800 PN10 470 690 635 46 90 30 210 610
75-0900-21-225101314200 900 PN10 510 690 635 60 90 30 300 820
75-1000-21-225101314200 1000 PN10 550 740 685 60 90 30 350 1130
Enquiry
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Components

1. Shaft Duplex 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 Duplex steel
7. Disc DN≤200 Duplex SS, DN≥250 DI
8. Shaft Duplex steel
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 14
  • Standard flange drilling to EN1092-2 (ISO 7005-2), PN10/16
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