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AVK GATE VALVE, FLANGED, OS&Y, PN25

BS5163, 1.4021 rising stem and handwheel

Flanged gate valve with rising stem for drinking water and neutral liquids to max. 70°C

AVK gate valves are designed with built-in safety in every detail. The wedge is fully vulcanized with AVK’s own drinking water approved EPDM rubber compound. It features an outstanding durability due to the ability of the rubber to regain its original shape, the double bonding vulcanization process and the sturdy wedge design. The triple safety stuffing box sealing system, the high strength stem and the thorough corrosion protection safeguard the unmatched reliability.

Variant 21/66-001
Connection: Flanged
Material: Ductile iron
DN: DN50 - DN400
PN: PN 25
Closing direction: Clockwise to Close

Features

  • Fixed, integral wedge nut prevents vibration and ensures durability
  • The ductile iron core is fully vulcanized with drinking water approved EPDM rubber, no iron parts are exposed to the medium and the excellent rubber vulcanization prevents creeping corrosion underneath the rubber
  • Guides in the wedge and on the valve body ensure a uniform closure, safe operation ensure as the guides prevent overloading of the stem
  • The wedge has a large through bore and as there are no hollows in the core, stagnant water or impurities can’t collect and cause contamination
  • Stainless steel stem with wedge stop and rolled threads for high strength
  • Stuffing box for re-tightening with three main O-rings, and two NBR O-rings in a polyamide gland bushing
  • Round bonnet gasket fixed in a recess groove in bonnet preventing it from being blown out by pressure surges
  • Countersunk and sealed bonnet bolts encircled by the bonnet gasket, thus there is no risk of corrosion
  • Full bore
  • Epoxy coating to DIN 3476, GSK approved

Downloads

Appendix
Datasheet

Reference nos. and dimensions:

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AVK ref. no. DN
mm		 Flange
drilling		 H open
mm		 H closed
mm		 A
mm		 L
mm		 D
mm		 Dh
mm		 T
mm		 Turns
to open		 Theoretical
weight/kg
21-050-66-074 50 PN25 419 368 180 178 165 125 19 13 19
21-080-66-074 80 PN25 480 440 180 203 200 160 19 20 25
21-100-66-074 100 PN25 575 475 254 229 235 190 23 20 39
21-150-66-074 150 PN25 783 633 305 267 300 250 28 30 63
21-200-66-074 200 PN25 990 791 356 292 360 310 28 33 97
21-250-66-074 250 PN25 1206 922 432 330 425 370 25 47 155
21-300-66-074 300 PN25 1375 1052 640 356 485 430 28 46 210
21-400-66-074 400 PN25 1800 1365 640 406 620 550 32 62 305
2D/3D drawings
Enquiry
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Components

1. Handwheel Grey iron
2. Anti-friction washer Brass DZR
3. Stem nut Brass DZR
4. Yoke Ductile iron GJS-500-7
5. Stem Stainless steel 1.4021
6. Gland follower Ductile iron GJS-500-7
7. Bonnet Ductile iron GJS-500-7
8. Bolt Steel gr. 8.8, zinc plated
9. Wedge Ductile iron GJS-500-7
10. Wedge rubber EPDM rubber
11. Gland PA 6.6
12. Bushing PA 6.6
13. Stem seal EPDM rubber
14. O-ring EPDM rubber
15. O-ring EPDM rubber
16. Nut Steel gr. 8.8, zinc plated
17. Stud bolt Steel gr. 8.8, zinc plated
18. Washer Steel gr. 8.8, zinc plated
19. Pin Stainless steel A2
20. Wedge nut Brass DZR CW602N (CZ132)
21. Bonnet gasket EPDM rubber
22. Slide guide Polyamide
23. Body Ductile iron GJS-500-7

Test/Approvals

  • Hydraulic test according to EN 1074-1 and 2 / EN 12266
  • Seat: 1.1 x PN (in bar), Body: 1.5 x PN (in bar). Operation torque test
  • WRAS approved to max. 50°C

Standards

  • EN 1074-2 Annex B (BS5163/Type B)
  • Face-to-face dimension according to EN 558, Series 3
  • Flange drilling EN1092, PN25
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