AVK GATE VALVE FOR ACTUATION,PN10/16

Resilient seated gate valve with ISO mounting flange for water and waste water. Temperature range: -10° C to +70° C. Mounting: F10/F14 dual drilled.

The 21/79 valve is a resilient seated gate valve with an ISO F10/ F14 mounting gland flange for the safe and cost effective fitting of gearboxes and actuators. For isolation purposes suitable for use with water and neutral liquids (sewage) with replaceable stem seal designed to the heavy duty BS5163 Type B standard.

Variant 21/79-001
Connection: Flanged
Material: Ductile Iron
DN: DN350 - DN400
PN: PN 16

Features

  • Fixed, integral wedge nut prevents vibration and ensures durability.
  • ISO F10/F14, mounting gland flange for the safe and cost effective fitting of gearboxes and actuators
  • 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
  • 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 rolled threads for high strength
  • Full circle brass thrust collar provides fixation of the stem and low free running torques
  • Double safety stem seal: a polyamide bearing with two O-rings, and another O-ring on stem, which prevents leakage when exchanging stem seals under pressure
  • 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
  • Blue fusion bonded epoxy coating
  • Body, bonnet and gland bolts sealed with hot-melt.
  • Embodied carbon data available upon request
  • Bosses for bypass

Downloads

Datasheet
Certificate(s)

Reference nos. and dimensions:

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Ref. no. DN
mm
Flange
drillling
Operating
Direction
D2
mm
L
mm
W
mm
H
mm
H3
mm
Theoretical
weight/kg
21-350-79-0140069 350 PN16 CTC 30 381 623 817 1084 216
21-350-79-1140069 350 PN16 CTO 30 381 623 817 1084 216
21-400-79-0140069 400 PN16 CTC 30 406 633 844 1111 222
21-400-79-1140069 400 PN16 CTO 30 406 633 844 1111 222
Enquiry
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Components

1. Body Ductile iron GJS-500-7
2. Wedge rubber EPDM
3. Wedge core Ductile iron GJS-500-7
4. Wedge shoe PA
5. Wedge nut DZR brass
6. Bonnet Ductile iron GJS-500-7
7. O-ring EPDM
8. O-ring EPDM
9. O-ring EPDM
10. Stem Stainless steel 1.4021
11. Bolt Zinc plated steel
12. Bearing shell PA
13. Actuator flange Ductile iron GJS-500-7
14. Wiper ring NBR rubber
15. Stainless steel
16. Bonnet gasket EPDM
17. Bonnet bolt Zinc plated steel
18. Thrust collar DZR brass
19. Blind plate Ductile iron GJS-500-7
20. O-ring EPDM
21. Bolt Zinc plated steel
22. Washer Zinc plated steel
23. Nut Zinc plated steel

Test/Approvals

  • Hydraulic tested to: 1.5 x PN
  • Seat: 1.1 x PN. Body: 1.5 x PN
  • WRAS approved Materials
  • Drinking Water Inspectorate Regulation 31 compliant

Standards

  • Designed according to BS5163/B, Designed according to BS EN 1074 -1 and 2
  • Face to face according to EN 558 Table 2 Basic Series 3
  • Standard flange drilling to EN1092 (ISO 7005-2), PN 10/16
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