Cast Iron 53ON Air Pipe Head:
China Cast Iron 53ON Air Pipe Head:
Cast Iron 53ON Air Pipe Head is also called as 53ON Air Vent Head or Nikura Air Vent Head/Air Pipe Head.It is a kind of check valve for the ventilation of the oil tank or water tank on the vessel.When the tank pressure is higher or lower than the the atmospheric pressure, the air vent head will breathe or inhale to keep the tank pressure not over the design pressure. The air vent head also can prevent the water,rain,worm,mouse,spark..etc. into the tank.
Technical Specification:
Flange Standard: JIS B2220 FF- 5K/10K/16K
Nominal Size: DN50~DN200
Certificate: CCS
Material for Air Pipe Head:
S/N | Name | Material |
1 | Hex Bolt | SUS304/Galv SS |
2 | Cover | SS400 c/w Galv |
3 | Cushion | Graphite |
4 | Body | Cast Iron FC200 /Nodular Iron FCD450 |
5 | Hex Bolt | SUS304/Galv SS |
6 | Rubber Ring | NBR |
7 | Screen | SUS304 |
8 | Screen Cover | SS400 c/w Galv |
9 | Float Disc | SUS304 |
10 | Hex Bolt | SUS304/Galv SS |
11 | Rubber Cushion | NBR |
12 | Cushion | SUS304 |
13 | Guide Bolt | SUS304/Galv SS |
Main Data for Joining(mm):
DN | D2 | D3 | HT | H1 | T | N | d1 |
50 | 105 | 130 | 175 | 127 | 14 | 4 | 15 |
65 | 130 | 155 | 204 | 164 | 14 | 4 | 15 |
80 | 145 | 180 | 244 | 176 | 14 | 4 | 15 |
100 | 165 | 200 | 220 | 160 | 16 | 8 | 19 |
125 | 200 | 235 | 250 | 180 | 16 | 8 | 19 |
150 | 230 | 265 | 285 | 208 | 18 | 8 | 19 |
200 | 280 | 320 | 365 | 269 | 20 | 8 | 23 |