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AVK GATE VALVE, FLANGED, PN25

BS 5163/EN558 ser.3, ductile iron, stainless steel stem

Resilient seat PN25 gate valve to BS standard with replaceable stem seal and stainless steel stem. For drinking water and other 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 stem sealing system, the high strength stem and the thorough corrosion protection safeguard the unmatched reliability.

Variant 21/60-004
Connection: Flanged
Material: Ductile iron
DN: DN50 - DN300
PN: PN 25
Closing direction: Clockwise to Close

Features

  • Fixed, integral wedge nut prevents vibration and ensures durability
  • Wedge fully vulcanized with drinking water approved EPDM rubber
  • Wedge shoes in PA and guide rails on the body make the wedge slide easily up and down, even with high differential pressure
  • Designed for heavy duty BS EN1074-2, type B
  • A large conical stem hole going all the way through the wedge ensures circulation and prevents stagnant water
  • Stainless steel stem with rolled threads for high strength
  • Full circle thrust collar keeps the stem firmly lined up and ensures low operating torque
  • Triple safety stem seal with an NBR wiper ring outermost to protect against contamination from outside, in the middle two O-rings around the replaceable radial bearing, and innermost an O-ring is the main seal to the system pressure
  • Bonnet gasket in EPDM with a circular cross-section and fixed in a recess to avoid blow-out
  • Counterbored  bonnet bolts, sealed with hot-melt and encircled by the bonnet gasket
  • Full bore
  • Fusion bonded epoxy coating, 250µm, to DIN 3476

Downloads

Datasheet
Appendix
Animation
AVK_Gate valves_animation_2022.mp4

Reference nos. and dimensions:

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AVK ref. no. DN
mm		 L
mm		 H
mm		 W
mm		 F
mm		 Theoretical
weight/kg
21-050-60-074 50 178 279 165 19 17
21-080-60-074 80 203 294 200 19 18
21-100-60-074 100 229 324 235 19 29
21-150-60-074 150 267 429 300 24 51
21-200-60-074 200 292 531 360 27 81
21-250-60-074 250 330 614 425 27 140
21-300-60-074 300 356 690 485 27 188
Enquiry
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Components

1. Body Ductile iron GJS-500-7
2. Wedge core Ductile iron GJS-500-7
3. Wedge rubber EPDM rubber
4. Wedge nut Brass DZR CW626N
5. Stem Stainless steel AISI 420
6. Bonnet bolt Steel gr. 8.8, zinc plated
7. Bonnet gasket EPDM rubber
8. Bonnet Ductile iron GJS-500-7
9. Seal Hot melt glue
10. O-ring NBR rubber
11. Thrust collar Brass DZR CW602N
12. O-ring NBR rubber
13. Gland flange Ductile iron GJS-500-7
14. Radial bearing Polyamide
15. O-ring NBR rubber
16. Wiper ring NBR rubber
17. Gland flange bolt Steel gr. 8.8, zinc plated

Test/Approvals

  • Seat: 1.1 x PN (in bar), Body: 1.5 x PN (in bar). Operation torque test
  • WRAS approved materials

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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