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/photo/Cast-Iron-53ON-Air-Pipe-Head.jpg
/photo/Cast-Iron-53ON-Air-Pipe-Head.jpg
Cast Iron 53ON Air Pipe Head
Category:
JIS Marine Valve
Certificate:
ABS,LR,BV,DNVGL,NK,KR,IRS,RMRS,CCS
FOB Price:
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Warranty:
12 Months unless specified otherwise
Place of Origin:
China
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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
Remarks: The flange size in the above list is based on JIS 5K.

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