All Weather Fireproof Breather valve

1.Manufacturing standard:GB5908-86.
2.End type:Flange/Thread.
3.End standard:HG,GB,SH,HGJ,JB,ANSI,JIS.
4.Operating pressure:
• Set pressure:36mmH2O~1000mmH2O;
• Set vaccum:-20mmH2O~-50mmH2O.
5.Explosion group:SS 5501:ⅡA, ⅡB ,ⅡC.


Main material for construction:

No.

1

2

3

4

5

Component

Body

Flame arrester

Spring hood

Vaccum hood

Diaphram

Material

L2、A3
304、304L
316、316L

304、304L
316、316L

L2、A3
304、304L
316、316L
PTFE

L2、A3
304、304L
316、316L
PTFE

NBR
PTFE
Metal gasket

Dimension table:

DN

H

L

D

D1

D2

n

d

20

360

362

140

110

90

4

14

80

445

513

185

150

125

4

18

100

445

513

205

170

145

4

18

150

610

640

260

225

200

8

18

200

700

770

315

280

255

8

18

250

828

918

370

335

310

12

18

Drawing of All Weather Fireproof Breather valve:

All Weather Fireproof Breather valve

OrderConstruction:
Please give clear indication of Dimension operating pressure and material.
Please give clear indication of flange, material and operating pressure if you need other standard.