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Resistant to fire breathing valve all-weather

Products > Flame arrester and breathing valve > Resistant to fire breathing valve all-weather

Resistant to fire breathing valve all-weather

Model: QZF-89
Valve size: DN50-300mm, NPS2 "~ 12"
Nominal pressure: PN1.0MPa
proof level: BS 5501: IIA, IIB, IIC
main material: carbon steel WCB, 304,316 stainless steel, aluminum
positive pressure valve disk material: 304,316 stainless steel, aluminum alloy
negative pressure valve disk material: stainless steel 304,316, tetrafluoroethylene PTFE
flange standard: ANSI, API, ASME, JIS standard for
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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

?110

?140

362

360

4 × 14

DN80

?170

?185

513

445

4 × 18

DN100

?170

?205

513

445

4 × 16

DN150

?225

?260

640

610

8 × 18

DN200

?280

?315

770

700

8 × 18

DN250

?335

?370

918

828

12 × 18

DN300

?395

?435

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