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AVK CENTRIC U-SECTION BUTTERFLY VALVE, PN 6

Loose EPDM liner for high temperature, with single acting pneumatic actuator

AVK headquater in Skovby Galten, Denmark

Contact

AVK International A/S

Bizonvej 1, Skovby, 8464 Galten, Denmark

Centric butterfly valve with loose liner and single acting pneu. actuator - U-section for wastewater treatment and HVAC to max. 130° C

AVK centric butterfly valves with loose liner are available in wafer, lug and U-section design with a wide standard range of actuators. The butterfly valves are designed with square driven anti-blowout shaft and slim disc of acid-resistant stainless steel with machined and polished disc edges resulting in low torques. 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Variant 820/20-016
Material: Ductile iron/ 1.4408 disc
DN: DN150 - DN1600
PN: PN 6
Closing direction: Clockwise to Close

Features

Ductile iron with long neck for insulation

Loose liner of EPDM for high temperatures with integrated gasket faces and “saw profile” for optimum grip in body

Square driven anti-blowout shaft in one-piece design up to DN 400, and from DN 450 with key and keyway in two-piece stub design with two self-lubricating bearings

Slim disc of acid-resistant stainless steel with machined and polished edges reducing the friction between liner and disc

Low operating torques allowing use of cost-effective actuators

200 μ epoxy coating up to DN 400, 250 μ polyurethane from DN 450, optionally other coatings

According to PED 97/23/EC appendix 1

Mounted with a single acting pneumatic actuator: Up to DN 450: Body of extruded aluminum with ALODUR® corrosion protection. Anodized and polyester coated end caps. Honed cylinder surface and symmetric rack and pinion design for long service life. One-piece blow-out proof nickel-plated drive shaft with bearing guided one-piece pinion. High quality bearings and seals for low friction and a wide operating temperature range. All screws of stainless steel. According to EN ISO 5211, VDI/VDE 3845, NAMUR and ATEX (Directive 94/9/CE). From DN 500: Scotch yoke actuator designed to provide a quarter-turn movement for either on/off or modulating duty. Body of 225 μm polyurethane coated carbon steel. A chromium plated alloy steel thrust bar supports the transverse loads of the scotch yoke. Inside nickel-plated cylinders and bronze sliding blocks on the torque arm ensure minimum friction. A dynamic floating piston seal reduces friction and avoids stick-slip effect after prolonged periods without operation. According to IEC IP66M/67M for environmental protection, PED 97/23/EC and ATEX94/9/EC.

Downloads

Datasheet
Installation
Appendix

Reference nos. and dimensions:

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AVK ref. no. DN
mm		 Product
PN Class		 Flange
drilling		 L
mm		 L2
mm		 H2
mm		 W2
mm		 W3
mm		 W
mm		 W1
mm		 Theoretical
weight/kg		 Notes
820-0150-20-02020120006 150 PN 6 PN10/16 56 285 133 210 385 149 304 19
820-0200-20-02020020006 200 PN 6 PN10 60 340 163 240 447 183 395 31
820-0250-20-02020020006 250 PN 6 PN10 68 406 196 279 550 223 473 55
820-0300-20-02020020006 300 PN 6 PN10 78 482 232 315 586 223 473 64
820-0350-20-02020020006 350 PN 6 PN10 80 533 257 330 679 284 605 112
820-0400-20-02020020006 400 PN 6 PN10 102 597 292 365 745 319 710 154
820-0450-20-02060021006 450 PN 6 PN10 113 640 355 397 857 418 855 263 250 my PUR coating on body
820-0500-20-02060021006 500 PN 6 PN10 126 715 393 437 915 393 1573 440 250 my PUR coating on body
820-0600-20-02060021006 600 PN 6 PN10 153 840 464 522 1020 423 1583 570 250 my PUR coating on body
820-0700-20-02060021006 700 PN 6 PN10 168 927 503 565 1148 448 1596 749 250 my PUR coating on body
820-0800-20-02060021006 800 PN 6 PN10 190 1060 577 627 1288 518 2043 1063 250 my PUR coating on body
820-0900-20-02060021006 900 PN 6 PN10 204 1170 643 696 1357 518 2043 1288 250 my PUR coating on body
820-1000-20-02060021006 1000 PN 6 PN10 216 1255 693 745 1415 546 2779 1720 250 my PUR coating on body
820-1100-20-02060021006 1100 PN 6 PN10 218 1395 738 820 1490 546 2779 1735 250 my PUR coating on body
820-1200-20-02060021006 1200 PN 6 PN10 254 1485 806 881 1634 573 2283 2342 250 my PUR coating on body
820-1400-20-02060021006 1400 PN 6 PN10 280 1746 908 990 1777 710 3017 3262 250 my PUR coating on body
820-1600-20-02060021006 1600 PN 6 PN10 318 1924 1048 1117 1985 845 3365 4617 250 my PUR coating on body
2D/3D drawings
Enquiry
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Components

1. Bolt Stainless steel A2
2. Washer Stainless steel A2
3. O-ring NBR rubber
4. Shaft Stainless steel 420
5. Body Ductile iron GJS-400-15 (GGG-40)
6. Liner EPDM, high temp.
7. Disc Stainless steel 316

Test/Approvals

  • Hydraulic test according to EN 12266-1, P10/P12
  • Approved for wastewater / pressure test EN12266-1

Standards

  • Designed according to EN 593
  • Face-to-face dimension according EN 558 - Series 20
  • Standard flange drilling to EN1092-2 (ISO 7005-2), PN10
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