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Marine Quick-closing Valve GB/T5744-93

Marine Quick-closing Valve     TEL:86-21-59180665


Marine Quick-closing Valve  GB/T5744-93

Technical Data 

Nominal Pressure (MPa)

Nominal Diameter (mm)

Applicable Medium

 

0.25

 

20-150

 

Sea water,Fresh water

Fuel oil and steam (t220)

 

  Material of main parts

 name

 material

Marks

 body \cover

Cast Steel

ZG230-45

disc

 Carbon Steel

Steel 45#

cylinder body

Cast Aluminum Bronze

ZQA19-2

stem

Stainless Steel

2Cr13

piston

 Zine Brass

H62

Type:AS\AQ\ASS\AQS , BS\BQ\BSS\BQS

 Main structure dimension

 DN

D

C

n-d

L

H

AS

BS

AS

BS

20

90

65

4-Ø11

150

95

240

320

25

100

75

4-Ø11

160

100

242

325

32

120

90

4-Ø14

180

105

245

330

40

130

100

4-Ø14

200

115

274

365

50

140

110

4-Ø14

230

125

283

381

65

160

130

4-Ø14

290

145

325

437

80

190

150

4-Ø18

310

155

350

466

100

210

170

4-Ø18

350

175

375

500

125

240

200

8-Ø20

400

200

400

540

150

295

225

8-Ø20

480

225

430

580

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