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APPLICATION:                                                                                           Catalogue# 070410799
Working in steam under 420 centigrade, the main valve and impulse valve should used coordinately. The impulse valve starts first to send pressure signal to main safety valve, which opens and discharges pressure.In the event of the pressure inside the equipment and conduit surpassing allowable value, the valve automatically opens, which is followed by full discharge. While the pressure drops to normal parameters, the valve automatically closes to ensure safe operation of equipment and conduit.

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GA49H-40 TYPE Impilse safety valve

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A49H-40 TYPE
Master safety valve

INSIDE NOMINAL DIAMETER
DN(mm)

SIZE(mm)

D

D1

D2

D6

b

Z-ød

D'

D1'

D2'

D0'

b'

Z'-ød'

L1

L2

H1

H2

150

300

250

218

204

30

8-25

360

310

278

200

34

12-25

220

240

230

486

200

375

320

285

260

38

12-30

485

430

390

300

40

16-30

270

330

295

625

250

445

385

345

313

42

12-34

550

490

448

350

44

16-34

300

370

350

646

DN(mm)

D

D1

D2

D3

Z-ød

H1

H2

H

L1

L2

L3

L

25

26

58

115

85

4-14

90

125

265

70

103

103

670

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