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AVK DOUBLE ECC. BUTTERFLY VALVE, LONG, PN16

IP67 gearbox w. act. flange/pos. ind., SS seal/seal ring, Duplex shaft, A4 fasteners, 300 µm EP coating

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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 756/102-031
Connection: Flanged
Material: Ductile iron
DN: DN700 - DN1200
PN: PN10/16
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, A4
  • Shaft in duplex stainless steel and seal retainer ring in AISI 316 stainless steel
  • Replaceable seat ring in stainless steel 1.4401/AISI 316 fixed with bolts and sealed with an O-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 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, 300µm
  • Drinking water approved by DVGW and WRAS, drinking water approved by KIWA (DN≤800)

Downloads

Datasheet
Appendix
Certificate(s)
Installation, operation and maintenance manuals
Animation
AVK butterfly 756 2024.mp4
Outline drawings DWG
Outline drawings DXF
Outline drawings IGS
Outline drawings STEP

Reference nos. and dimensions:

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Reference no. DN
mm		 Flange
drilling		 D1
mm		 L
mm		 L1
mm		 L2
mm		 H2
mm		 W1
mm		 W2
mm		 W3
mm		 W4
mm		 A
mm		 B
mm		 C
mm		 Actuator
flange		 Theoretical
weight/kg
756-0700-1-1430207 700 PN16 20 430 127 133 550 455 656 533 543 313 605 287 F10 538
756-0800-1-1430207 800 PN16 20 470 156 162 620 513 756 627 636 313 670 349 F10 697
756-0900-1-1430207 900 PN16 20 510 186 192 690 563 1057 722 730 342 740 336 F10 885
756-1000-1-1430207 1000 PN16 20 550 216 222 770 628 1137 816 824 469 837 306 F10 1131
756-1200-1-1430207 1200 PN16 20 630 269 275 855 743 1222 986 993 505 930 382 F10 1745
Enquiry
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Components

1. Body Ductile iron GJS-500-7 (GGG-50)
2. Shaft, drive Stainless steel, duplex
3. Bearing Bronze/PTFE comp. on SS back
4. Cover Stainless steel
5. Key Stainless steel A4
6. Set screw Stainless steel A4
7. End cover Stainless steel
8. Disc Ductile iron GJS-500-7 (GGG-50)
9. Shaft, stub Stainless steel, duplex
10. Spacer Bronze
11. Thrust bearing Bronze
12. End plate Ductile iron GJS-500-7 (GGG-50)
13. Washer Stainless steel A4
14. Bolt Stainless steel A4
15. Screw Stainless steel A4
16. O-ring EPDM rubber
17. Gasket EPDM rubber
18. Nut Stainless steel A2
19. Seal retainer ring Stainless steel 1.4404 (AISI 316L)
20. Seal ring EPDM rubber
21. Gearbox Cast iron

Test/Approvals

  • Hydraulic test according to EN 1074-1 and -2 / EN 12266
  • Approved according to KIWA Certificate K 6320

Standards

  • EN 593
  • Face-to-face dimension according to EN 558, series 14
  • Flange drilling to EN1092, PN16
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