QZF-89 all weather resistance fire breathing valve is installed on the fixed roof tank ventilation device, starting to reduce the evaporation loss of oil, control the tank pressure and prevent the external flame into the role. The valve has a large amount of ventilation, small leakage, corrosion resistance and other features, and there is an electrostatic grounding, so that the valve and the tank to maintain the potential. The valve has anti freezing performance and is suitable for cold area.
QZF-89 all weather resistance fire breathing valve GB flange connection size： GB、JB
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规格
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Installation dimensions（mm）
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|
D1
|
D
|
L
|
H
|
N-d
|
|
DN50
|
Ø110
|
Ø140
|
362
|
360
|
4×14
|
|
DN80
|
Ø170
|
Ø185
|
513
|
445
|
4×18
|
|
DN100
|
Ø170
|
Ø205
|
513
|
445
|
4×16
|
|
DN150
|
Ø225
|
Ø260
|
640
|
610
|
8×18
|
|
DN200
|
Ø280
|
Ø315
|
770
|
700
|
8×18
|
|
DN250
|
Ø335
|
Ø370
|
918
|
828
|
12×18
|
|
DN300
|
Ø395
|
Ø435
|
1050
|
910
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12×23
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QZF-89 type all-weather fire breathing valve American Standard flange dimensions：ANSI、API、ASME For JISstandard
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规格
|
Installation dimensions（mm）
|
|
D1
|
D
|
L
|
H
|
N-d
|
|
2"
|
120.5
|
152
|
362
|
360
|
4×14
|
|
3"
|
152.5
|
190
|
513
|
445
|
4×18
|
|
4"
|
190.5
|
229
|
513
|
445
|
4×16
|
|
6"
|
241.5
|
254
|
640
|
610
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8×18
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|
8"
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298.5
|
343
|
770
|
700
|
8×18
|
|
10"
|
362
|
406
|
918
|
828
|
12×18
|
|
12"
|
483
|
432
|
1050
|
910
|
12×23
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