ZFQ-1 type all weather explosion-proof fire breathing valve. . It is a new type of safety equipment for petrochemical tanks, the advantage is the fire breathing performance is good, light weight, convenient maintenance. The product is suitable for storage in a point below 28 DEG C and B oil oil flash point below 60 DEG C, such as gasoline, benzene, toluene, kerosene, light diesel oil, engine oil, crude oil and the properties of the same chemical product tank use, it works in the temperature of -60 DEG C in -35 environment.
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body material
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Carbon steel WCB, stainless steel 304, 316, aluminum alloy
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Positive pressure valve disc material
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Stainless steel 304, 316, aluminum alloy
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Negative pressure valve disc material
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Stainless steel 304, 316, PTFE PTFE
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ambient temperature ℃
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-30~60
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Operating pressure Pa
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-295~98000 -30mmH2O~+10000mmH2O
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Shell selection of cast steel and aluminum alloy, good corrosion resistance;
The corrugated fire resistant layer is made of stainless steel, which has good corrosion resistance and good corrosion resistance;
The structure is simple, easy to repair, safe and convenient;
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A positive pressure
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355Pa (36 mm water column)
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negative pressure
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295Pa (30mm water column)
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B positive pressure
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980Pa (100mm water column)
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negative pressure
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295Pa (30mm water column)
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C positive pressure
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1765Pa (180mm water column)
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negative pressure
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295Pa (30mm water column)
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Standard flange connection outline dimensions： GB、JB
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Specifications
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Installation dimensions（mm）
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D1
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D
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D3
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H
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M-h
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DN50
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?110
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?140
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160
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255
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4×12
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DN100
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?170
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?205
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235
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480
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4×16
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DN150
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?225
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?260
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295
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547
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8×16
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DN200
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?280
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?315
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355
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658
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8×16
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DN250
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?335
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?370
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420
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705
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12×16
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Breathing valve flange size American Standard：ANSI、API、ASME Available for JIS standard
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Specifications
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Installation dimensions（mm）
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D1
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D
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D3
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H
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M-h
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2"
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120.5
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152
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160
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255
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4×19
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4"
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190.5
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229
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265
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290
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8×19
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6"
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241.5
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254
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305
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330
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8×22
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8"
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298.5
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343
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355
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350
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8×22
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10"
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362
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406
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420
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400
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12×25
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