All-weather fire retardant valve performance and features
QZF-89 all-weather fire breathing valve is installed on the fixed roof tank ventilation device, play a reduction of oil evaporation loss, control of tank pressure and prevent the introduction of the role of the outside flame. The valve has a large amount of ventilation, leakage, corrosion resistance and other characteristics, and electrostatic grounding line so that the valve and the tank to maintain equipotential. The valve has antifreeze properties, suitable for cold areas.
All-weather fire breathing valve main technical parameters
|
Positive pressure |
353 Pa (36 mmH2O), 980.7 Pa (100 mmH2O) |
|
Negative pressure |
294.2 Pa (36 mmH2O) |
Resistant fire breathing valve parts and components of the material
|
Body material |
Carbon Steel WCB, Stainless Steel 304,316, Aluminum Alloy |
|
Positive pressure valve disc material |
Stainless steel 304,316, aluminum alloy |
|
Negative pressure valve disc material |
Stainless steel 304,316, PTFE PTFE |
|
Ambient temperature ℃ |
-30 ~ 60 |
QZF-89 all-weather resistance fire breathing valve GB flange connection Dimensions: GB, JB
|
specification |
Installation size (mm) |
||||
|
D1 |
D |
L |
H |
Nd |
|
|
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 |
12 × 23 |
QZF-89 all-weather fire breathing valve American Standard flange connection size: ANSI, API, ASME for JIS standards
|
specification |
Installation size (mm) |
||||
|
D1 |
D |
L |
H |
Nd |
|
|
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 |
8 × 18 |
|
8 |
298.5 |
343 |
770 |
700 |
8 × 18 |
|
10 |
362 |
406 |
918 |
828 |
12 × 18 |
|
12 |
483 |
432 |
1050 |
910 |
12 × 23 |
