JIS-KS91A-121 Air Vent Head
● Material: cast iron
● Standard: JIS, CB
● Size: DN40~ DN500
● Application: ballast tank, water tank, oil tank
● Type approval: ABS, CCS
Description
Production Introduction
JIS-KS91A-121 is a JIS standard air vent head / air pipe head
Test Standard: JIS 7400-1996
Flange size as per JIS B2220 - 5K
The flange size also can be manufactured according to 10K, 16K.
The purpose of the air vent head is
1. To prevent the free entry of water into the tanks
2. To allow the passage of air or liquid to prevent excessive pressure or vacuum coming on the tank
Dimention of the air vent head/ air pipe head
DN | D2 | D3 | HT | H1 | T | N-d1 | Weight ( KG) |
50 | 105 | 130 | 175 | 127 | 14 | 4-D15 | 8 |
65 | 130 | 155 | 204 | 164 | 14 | 4-D15 | 13 |
80 | 145 | 180 | 244 | 176 | 14 | 4-D15 | 16 |
100 | 165 | 200 | 220 | 160 | 16 | 8-D19 | 23 |
125 | 200 | 235 | 250 | 180 | 16 | 8-D19 | 34 |
150 | 230 | 265 | 285 | 208 | 18 | 8-D19 | 47 |
200 | 280 | 320 | 365 | 269 | 20 | 8-D23 | 72 |
250 | 345 | 385 | 430 | 314 | 22 | 12-D23 | 120 |
300 | 390 | 430 | 530 | 367 | 22 | 12-D23 | 178 |
350 | 435 | 480 | 570 | 415 | 24 | 12-D23 | 196 |
400 | 495 | 540 | 640 | 475 | 24 | 12-D23 | 235 |
450 | 555 | 605 | 713 | 522 | 24 | 12-D23 | 298 |
Storage and packing
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