1. AVK China /
  2. Product finder

AVK DOUBLE ECC. BUTTERFLY VALVE, LONG, PN25

IP67 gearbox w. handwheel/pos. ind., SS-shaft, intgr. seat, A2 fasteners

Double eccentric butterfly valve to EN 593 for neutral liquids like drinking water and treated waste water free from solids and fibrous impurities to max 70°C.

AVK double eccentric butterfly valves with tilted disc are designed for easy operation and long service life. The disc seal is made of AVK's drinking water approved EPDM rubber featuring an excellent compression set and ability to regain the original shape. The high quality epoxy coating and fully encapsulated shaft/disc connection ensure optimal corrosion protection and durability
Variant 756/118-002
Connection: Flanged
Material: Ductile iron
DN: DN150 - DN1200
PN: PN 25
Closing direction: Clockwise to Close

Features

  • Double eccentric design releases 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 drinking water approved by multiple institutes
  • Fasteners in stainless steel, A2
  • Stainless steel shaft
  • Machined and epoxy coated ductile iron seat integrated in the body
  • 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 keeps the shaft in position against system pressure and seals the disc interior against corrosion
  • Shaft ends 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; gaskets to the exterior in hydrocarbon resistant NBR
  • Coated with blue RAL 5017 FBE to DIN 3476, GSK and approved by WRAS-DVGW/W270/UBA, 250µm

Downloads

Datasheet

Reference nos. and dimensions:

Scroll for more info
AVK ref. no. DN
mm		 Flange
drilling		 D
mm		 L
mm		 L1
mm		 L2
mm		 H2
mm		 W1
mm		 W2
mm		 W3
mm		 W4
mm		 W5
mm		 Theoretical
weight/kg
756-0150-1-74018014 150 PN25 250 210 - - 192 162 254 - - 277 39
756-0200-1-74018014 200 PN25 250 230 - - 223 190 288 - - 277 57
756-0250-1-74018014 250 PN25 400 250 - - 268 223 333 - - 306 92
756-0300-1-74018014 300 PN25 400 270 1 12 303 253 368 117 115 306 117
756-0350-1-74018014 350 PN25 400 290 19 25 331 288 393 155 176 306 151
756-0400-1-74018014 400 PN25 400 310 34 40 373 320 435 217 234 306 190
756-0450-1-74018014 450 PN25 600 330 48 54 411 345 503 270 285 461 258
756-0500-1-74018014 500 PN25 600 350 63 69 454 375 546 326 339 461 306
756-0600-1-74018014 600 PN25 700 390 92 98 541 430 632 425 436 449 484
756-0700-1-74018014 700 PN25 700 430 124 130 566 483 704 527 537 570 673
756-0800-1-74018014 800 PN25 700 470 155 161 650 546 789 626 635 570 874
756-0900-1-74018014 900 PN25 700 510 185 191 701 593 839 721 729 570 1134
756-1000-1-74018014 1000 PN25 700 550 216 222 771 663 909 813 824 570 1434
756-1200-1-74018014 1200 PN25 700 630 268 272 899 768 1044 982 987 630.5 2315
Enquiry
Scroll for more info

Components

1. Key Stainless steel A2
2. Shaft, drive Stainless steel AISI 420
3. Seal housing Bronze
4. O-ring EPDM rubber
5. O-ring EPDM rubber
6. Self-lubricating bearing Bronze/PTFE composite
7. Disc cover Stainless steel
8. Disc cover gasket EPDM rubber
9. Dowel Stainless steel
10. Disc Ductile iron GJS-500-7 (GGG-50)
11. O-ring EPDM rubber
12. Centre flange Ductile iron GJS-500-7 (GGG-50)
13. Security plate Stainless steel
14. Screw Stainless steel A2
15. O-ring EPDM rubber
16. Spring washer Stainless steel A2
17. Washer Zinc
18. O-ring EPDM rubber
19. Body Ductile iron GJS-500-7 (GGG-50)
20. Nut Stainless steel A2
21. Washer Stainless steel A2
22. Bolt Stainless steel A2
23. O-ring EPDM rubber
24. Washer Stainless steel A2
25. O-ring EPDM rubber
26. Bolt Stainless steel A2
27. Seal retainer ring Steel
28. Disc seal EPDM rubber
29. Screw Stainless steel A2
30. Bolt Stainless steel A2
31. O-ring EPDM rubber
32. Washer Stainless steel A2
33. O-ring EPDM rubber
34. Safety key Stainless steel A2
35. End plate Ductile iron GJS-500-7 (GGG-50)
36. Gasket EPDM rubber
37. Screw Stainless steel A2
38. Thrust bearing Bronze
39. Screw Stainless steel A2
40. Shaft, stub Stainless steel AISI 420
41. Screw Stainless steel A2
42. Gearbox Cast iron

Test/Approvals

  • Hydraulic test according to EN 1074-1 and -2 / EN 12266
  • Approved for drinking water
  • ISO 14001 certified - SAI Global Environment
  • ISO 9001 certified - SAI Global Quality

Standards

  • EN 593
  • Face-to-face dimension according to EN 558 Table 2 Basic Series 14
  • Flange drilling EN1092, PN25
0 Files In the package