AVK RESILIENT SEAT SWING CHECK VALVE, PN16
EN 558-48, closed ends SS shaft, brass bushings, EPDM, A2 bolts, SANS664 coating
Resilient seat swing check valve, EN 1074 standard. For drinking water and neutral liquids incl. treated waste water free of solids and fibrous impurities to max. 70°C
AVK series 41 swing check valves come with both metal and resilient seats. Installed in pumping applications to prevent back flow they can be used for drinking water as well as waste water. The disc is connected to the shaft via a flexible bush that allows disc and valve seat to adjust exactly. All interior parts are stainless steel or coated with drinking water approved epoxy or EPDM. The series 41 valves are available with either enclosed shaft end or protruding shaft end where a lever with a weight or a spring can be fitted to mitigate pressure surges.| Variant 41/61-011 | |
|---|---|
| Connection: | Flanged |
| Material: | Ductile iron |
| DN: | DN50 - DN300 |
| PN: | PN 16 |
Features
- Resilient seat provides a drop tight closure and the light weight of the disc requires a minimum of force to open
- Shaft fitted in the bonnet allowing for easy maintenance without removing valve from pipeline
- Shaft material 1.4021 (AISI 420) stainless steel
- Enclosed shaft ends
- Stainless steel grade A2 bolts
- Disc mounted in a flexible rubber bushing allowing it to tilt slightly in all directions and adjust exactly to the valve seat
- All seals in contact with the water in drinking water approved EPDM
- Bonnet gasket fixed in a groove between bonnet and body to prevent blow-out
- 250µm fusion bonded blue RAL5017 epoxy coating to SANS 664
- Bosses on each side of the valve seat allow for installation of pressure gauge, by-pass, etc.
Downloads
Datasheet
Appendix
Certificate(s)
Installation, operation and maintenance manuals
Installation
Animation
| AVK_swing_check_valve_animation.mp4 |
Outline drawings DWG
Outline drawings DXF
Outline drawings IGS
Outline drawings STEP
Reference nos. and dimensions:
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| Reference no. | DN mm |
Flange drilling |
D mm |
L mm |
H3 mm |
W mm |
Theoretical weight/kg |
|---|---|---|---|---|---|---|---|
| 41-050-61-01833 | 50 | PN16 | 165 | 200 | 193 | 190 | 12 |
| 41-080-61-01833 | 80 | PN16 | 200 | 260 | 240 | 200 | 17 |
| 41-100-61-01833 | 100 | PN16 | 220 | 300 | 260 | 220 | 21 |
| 41-150-61-01833 | 150 | PN16 | 285 | 400 | 338 | 285 | 42 |
| 41-200-61-01833 | 200 | PN16 | 340 | 500 | 400 | 340 | 67 |
| 41-250-61-01833 | 250 | PN16 | 405 | 600 | 568 | 606 | 183 |
| 41-300-61-01833 | 300 | PN16 | 460 | 700 | 640 | 606 | 197 |
Enquiry
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Components
| 1. | Nut | Stainless steel A4 |
| 2. | Bolt | Stainless steel A4 |
| 3. | Washer | Stainless steel A4 |
| 4. | Spacer | Polyamide |
| 5. | Disc rubber | EPDM rubber |
| 6. | Washer | Stainless steel A2 |
| 7. | Bolt | Stainless steel A2 |
| 8. | Hinge | Stainless steel AISI 316 |
| 9. | Bonnet gasket | EPDM rubber |
| 10. | Key | Stainless steel A4 |
| 11. | Washer | Stainless steel A4 |
| 12. | Bolt | Stainless steel A4 |
| 13. | Body | Ductile iron EN-GJS-500-7 |
| 14. | Disc insert | Steel S235JR |
| 15. | Bushing | Brass DZR |
| 16. | O-ring | NBR rubber |
| 17. | Shaft | Stainless steel AISI 420 |
| 18. | Bonnet | Ductile iron EN-GJS-500-7 |
Test/Approvals
- Hydraulic test according to EN12050-4
- Approved according to WRAS Certificate No. 1811031 to max. 50°C
Standards
- EN 1074-3
- Face-to-face dimension according to EN 558, Series 48
- Flange drilling to EN1092, PN10/16
