AVK GATE VALVE, FLANGED, BS STD., OS&Y, PN25
Ductile iron body, EN1092 flange, EPDM rubber, hand wheel, A2 bolts, blue EP GSK coating
Resilient seated gate valve to BS5163 with rising stem, for water and other neutral liquids including treated waste water free of solids and fibrous impurities 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 21/66-003 | |
|---|---|
| Connection: | Flanged |
| Material: | Ductile iron |
| DN: | DN80 |
| PN: | PN 25 |
| Closing direction: | Clockwise to Close |
Features
- Designed to BS 5163 with replaceable stem seal
- Body in ductile iron GJS-500
- Wedge nut designed as a fixed, integral part of the wedge which prevents vibration and ensures durability
- Thrust bearing consisting of an alu-bronze stem nut between stainless steel washers
- Wedge core fully vulcanized with drinking water approved EPDM (WRAS) rubber in a process that eliminates creeping corrosion underneath the rubber
- Outside yoke and rising stem for clear indication of valve status at a distance
- Stuffing box for re-tightening with three main O-rings and an NBR O-rings in a polyamide gland bushing
- Wedge shoes in PA and guide rails on the body make the wedge slide easily up and down regardless of differential pressure
- Stem in stainless steel with wedge stop and rolled threads for high strength
- Fitted with a handwheel
- Bonnet gasket in EPDM (WRAS) with a circular cross-section, fixed in a recess to avoid blow-out
- Counterbored stainless steel, A2 bonnet bolts, sealed with hot-melt and encircled by the bonnet gasket
- Blue epoxy coating acc. to GSK
Downloads
Reference nos. and dimensions:
| Reference 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 21-080-66-4743064 | 80 | PN25 | 480 | 440 | 180 | 203 | 200 | 160 | 19 | 20 | 25 |
Components
| 1. | Handwheel | Ductile iron EN-GJS-500-7 |
| 2. | Anti-friction washer | Brass DZR |
| 3. | Stem nut | Brass DZR |
| 4. | Yoke | Ductile iron EN-GJS-500-7 |
| 5. | Stem | Stainless steel 1.4021 |
| 6. | Gland follower | Ductile iron EN-GJS-500-7 |
| 7. | Bonnet | Ductile iron EN-GJS-500-7 |
| 8. | Bolt | Stainless steel A2 |
| 9. | Wedge | Ductile iron EN-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 | Stainless steel A2 |
| 17. | Stud bolt | Stainless steel A2 |
| 18. | Washer | Stainless steel A2 |
| 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 EN-GJS-500-7 |
Test/Approvals
- Seat: 1.1 x PN (in bar), Body: 1.5 x PN (in bar). Operation torque test
Standards
- EN 1074-2 Annex B (BS5163/Type B)
- Face-to-face dimension according to EN 558, basic series 3
- Flange drilling EN1092, PN25