Article: 701-710
Flanges: UNI EN 1092-2 PN 10-16-25 – 40
Installation: at the high part of pipelines
APPLICATIONS • Aqueducts • Irrigation plants
– Fig. 701: flanges PN 10-16
– Fig. 710: flanges PN 25-40
– Fig. 711: flanges PN 64
Epoxy paiting suitable for drinking water applications.
The double ball automatic air valves are used for applications related to troubles with air in the pipelines. Minimum pressure on seat: 0,3 bar.The double ball air valves have three functions:
- Discharge large amount of air during filling operations
- Discharge small amount of air during working operations
- Let air in during piping emptying operations
Materials
body
ductile iron GGG40/50, EN-GJS-400/500
cover
ductile iron GGG40/50, EN-GJS-400/500
floating ball
ABS / stainless steel
gasket
EPDM
painting
epoxy
| DN | A mm. | B mm. | D mm. PN 10/16/25 | Weight kg. |
|---|---|---|---|---|
| 50 | 290 | 290 | 150 | 14.5 |
| 65 | 290 | 330 | 165 | 15 |
| 80 | 290 | 36 | 185 | 19 |
| 100 | 360 | 335 | 200 | 26.5 |
| 150 | 490 | 535 | 285 / 300 | 58.5 |
| 200 | 570 | 560 | 340 / 360 | 125 |
| 250 | 450 | 520 | 405 / 425 | 130 |
| 300 | 490 | 520 | 460 / 485 | 160 |
DN
Nominal pressure
Test pressure MPA
Max working pressure Mpa
mm
mm
Bar
Body
Seat
50-300
16
2,4
1,76
1,6
1,6
25
4,0
2,75
2,5
DN of pipeline
DN of air valve
< 200 mm
DN 50
200 mm - 250 mm
DN 80
300 mm - 500 mm
DN 100
600 mm - 900 mm
DN 150
1000 mm - 1200 mm
DN 200
> 1200 mm
DN 250 o 2 x DN 200