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BUTTERFLY VALVE, DOUBLE ECCENTRIC, LONG, PN25

IP67 gearbox w. handwheel/pos. ind., intgr. seat, EP coated seal ret. ring, SS shaft, A2 fasteners, 250µm EP coating

Double eccentric butterfly valve for neutral liquids like drinking water, filtered raw water and filtered wastewater 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:

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Reference no. DN
mm		 Flange
drilling		 D
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 - 280 263 200 216 - 40
756-0200-1-74018014 200 PN25 250 230 - 282 288 225 241 - 56
756-0250-1-74018014 250 PN25 400 250 - 311 332 268 282 - 84
756-0300-1-74018014 300 PN25 400 270 12 312 367 303 317 114 109
756-0350-1-74018014 350 PN25 400 290 25 309 392 331 342 176 143
756-0400-1-74018014 400 PN25 400 310 39 309 434 373 384 232 183
756-0450-1-74018014 450 PN25 600 330 53 464 497 411 433 283 249
756-0500-1-74018014 500 PN25 600 350 69 464 540 454 476 338 297
756-0600-1-74018014 600 PN25 700 390 98 520 628 541 561 435 477
756-0700-1-74018014 700 PN25 700 430 130 573 704 579 604 537 687
756-0800-1-74018014 800 PN25 700 470 161 573 789 665 689 635 899
756-0900-1-74018014 900 PN25 700 510 191 573 839 718 739 729 1135
756-1000-1-74018014 1000 PN25 700 550 221 573 909 788 809 822 1471
756-1200-1-74018014 1200 PN25 700 630 274 634 1081 921 943 993 2372
Enquiry
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Components

1. Gearbox Cast iron
2. Key Stainless steel A2
3. Shaft, drive Stainless steel 1.4021
4. Body Ductile iron GJS-500-7
5. Security plate Stainless steel 1.4301
6. Washer Zinc
7. Bolt Stainless steel A2
8. Disc Ductile iron GJS-500-7
9. Pin Stainless steel 1.4021
10. Shaft, stub Stainless steel 1.4021
11. Bearing Bronze/PTFE comp. on SS back
12. End plate Ductile iron GJS-500-7
13. Bolt Stainless steel A2
14. Washer Stainless steel A2
15. Spacer Copper alloy
16. Bearing Copper alloy
17. O-ring EPDM rubber
18. Gasket NBR rubber
19. Seal retainer ring Steel
20. Seal ring EPDM rubber
21. Bolt Stainless steel A2
22. Nut Stainless steel A2
23. Disc cover Stainless steel 1.4021
24. Gasket EPDM rubber
25. Blanking flange Ductile iron GJS-500-7
26. Safety key Stainless steel 1.4021

Test/Approvals

  • Hydraulic test according to EN 1074-1 and -2 / EN 12266
  • Approved for drinking water

Standards

  • EN 1074 part 1 & 2, EN 593
  • Face-to-face dimension according to EN 558, basic 14
  • Flange drilling to EN1092, PN25
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