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AVK DOUBLE ECCENTRIC BUTTERFLY VALVE, PN25

Stainless steel seat, ISO-input IP67 gearbox, DN150-1200

AVK headquater in Skovby Galten, Denmark

Contact

AVK International A/S

Bizonvej 1, Skovby, 8464 Galten, Denmark

Double eccentric butterfly valve PN25 with stainless steel seat and ISO-input IP67 gearbox, for drinking water and neutral liquids to max. 70°C

AVK double eccentric butterfly valves are designed with tilted disc for easy operation. The disc seal is made of AVK’s drinking water approved EPDM rubber featuring an excellent compression set and thus ability to regain its original shape. The high quality GSK approved epoxy coating and the corrosion protected shaft end zones ensure high durability. The valves are suitable for bi-directional application.

Variant 756/102-IS4
Connection: Flanged
Material: Ductile Iron
DN: DN150 - DN1200
PN: PN 25
Closing direction: Clockwise to Close

Features

  • DN≤600: Replaceable seat ring of stainless steel pressed into the body and sealed with an O-ring
  • DN≥700: Replaceable seat ring of stainless steel fixed with bolts and sealed with an O-ring
  • The double eccentric design combined with a tilted disc allows release of seal compression after only few degrees of opening resulting in low operating torque 
  • Disc firmly fixed to the shaft to prevent fluttering and a slight tilt allows for precise adjustment of the closed position
  • Disc seal profile and rubber quality ensure low closing torque
  • All rubber parts are drinking water approved by multiple institutes
  • Fasteners in stainless steel A2
  • Stainless steel shaft and seal retainer ring
  • All threaded connections are sealed with O-rings for protection against medium and environment
  • Radial bearings in self-lubricating PTFE/bronze composite
  • Shaft ends: DN≤600: Fitted with an end cover that seals the disc interior against corrosion. DN≥700: Fully encapsulated in the disc and fixed with O-ring sealed dowels held in place with a security plate. Key and keyway as backup
  • Replaceable shaft seals with two EPDM O-rings and an NBR gasket protecting against contamination from outside
  • Body and disc of ductile iron with fusion bonded epoxy coating 250µm RAL 5017 in compliance with DIN 3476 part 1 and EN 14901, approved by GSK and WRAS-DVGW/W270/UBA
  • IP67 Rotork ISO flange gear, operated by actuator or handwheel. Coated grey RAL7006, 100µm. Input shaft, bolts and nuts in stainless steel AISI 303

Downloads

Datasheet
Appendix
Tender Text
Certificate(s)
Installation, Operation & Maintenance
Animation
AVK butterfly 756 2024.mp4

Reference nos. and dimensions:

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AVK ref. no. DN
mm		 Flange
drilling		 L
mm		 L1
mm		 L2
mm		 H2
mm		 W1
mm		 W2
mm		 W3
mm		 W4
mm		 D1
mm		 A
mm		 B
mm		 C
mm		 Actuator
Flange		 Theoretical
weight/kg
756-0150-1-7400209 150 PN25 210 - - 192 162 278 - - 20 122 216 176 F10 39
756-0200-1-7400209 200 PN25 230 - - 226 190 312 - - 20 118 249 191 F10 57
756-0250-1-7400209 250 PN25 250 - - 268 223 350.5 - - 20 263 288 230 F10 92
756-0300-1-7400209 300 PN25 270 1 12 303 253 420 17 115 20 269 325 173 F10 117
756-0350-1-7400209 350 PN25 290 19 25 331 288 445 155 176 20 269 350 183 F10 152
756-0400-1-7400209 400 PN25 310 34 40 373 320 487 217 234 20 269 392 193 F10 191
756-0450-1-7400209 450 PN25 330 48 54 411 345 572 270 285 20 355 447 205 F10 277
756-0500-1-7400209 500 PN25 350 63 69 454 375 615 325 338 20 355 490 215 F10 325
756-0600-1-7400209 600 PN25 390 92 98 541 430 701 424 434 20 342 576 277 F14 501
756-0700-1-7400209 700 PN25 430 124 130 566 483 740 527 537 20 342 615 297 F10 676
756-0800-1-7400209 800 PN25 170 155 161 650 546 921 626 635 20 469 717 266 F10 978
756-0900-1-7400209 900 PN25 510 185 191 701 593 971 721 729 20 469 767 286 F10 1234
756-1000-1-7400209 1000 PN25 550 218 222 771 663 1041 813 824 20 469 837 306 F10 1531
756-1200-1-7400209 1200 PN25 630 268 272 899 768 1161 982 987 20 505 957 382 F10 2299
BIM drawings
2D/3D drawings
Enquiry
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Components

1. Key Stainless steel A2
2. Drive shaft Stainless steel 431
3. Seal housing Bronze
4. O-ring EPDM rubber
5. Self-lubricating bearing Bronze / PTFE composite
6. Disc cover Stainless steel
7. Disc cover gasket EPDM rubber
8. Dowel Stainless steel
9. Disc Ductile iron GJS-500-7 (GGG-50)
10. Centre flange Ductile iron GJS-500-7 (GGG-50)
11. Security plate Stainless steel
12. Spring washer Stainless steel A2
13. Washer Zinc
14. Body Ductile iron GJS-500-7 (GGG-50)
15. Nut Stainless steel A2
16. Washer Stainless steel A2
17. Bolt Stainless steel A2
18. Screw Stainless steel A2
19. Seal retainer ring Stainless steel 420
20. Disc seal EPDM rubber
21. Body ring Stainless steel 420
22. Screw Stainless steel A2
23. Safety key Stainless steel A2
24. End plate Ductile iron GJS-500-7 (GGG-50)
25. Gasket EPDM rubber
26. Thrust bearing Bronze
27. Stub shaft Stainless steel 431
28. Gearbox Cast iron

Test/Approvals

  • Hydraulic test according to EN 1074-1 and 2 / EN 12266
  • Approved according to DIN-DVGW Certificate NW-6201BR0451 (DN≤1200)
  • Approved according to KIWA Certificate K 6320 (DN≤800)
  • Approved according to WRAS Certificate No. 2206003
  • Approved for drinking water according to WRAS Certificate No. 2307007 (DN900-1200)

Standards

  • Designed according to EN 593
  • Face-to-face dimension according to EN 558 Table 2 Basic Series 14
  • Standard flange drilling to EN1092-2 (ISO 7005-2), PN25
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