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CN | EN

Bellows seal balance safety valve

Technical Parameters

Product model: WA42Y
Nominal diameter: DN25-200mm
Nominal pressure: PN16-100
Applicable temperature: -29 ° C~200 ° C
Applicable medium: toxic, flammable or corrosive gases

Product Details

Product Overview
The bellows balanced safety valve is suitable for equipment or pipelines with unstable back pressure or toxic or corrosive media at a working temperature of ≤ 200 ℃, as an overpressure protection device. Widely used in industries such as petroleum, chemical, and power plants.


Main overall connection dimensions

model

DN

do

D

K

g

g1

b

f

f1

Z-?d

L

L1

≈H

WA42Y-16 
WA42Y-16P
WA42Y-16R

25

16

115

85


65

16

2


4-14

110

95

378

32

20

140

100


78

18

2


4-18

115

100

378

40

25

150

110


85

18

3


4-18

120

110

406

50

32

165

125


100

20

3


4-18

135

120

450

65

40

185

145


120

20

3


4-18

160

140

520

80

50

200

160


135

20

3


8-18

170

135

525

100

65

220

180


155

22

3


8-18

195

175

690

125

80

250

210


185

22

3


8-18

210

190

857

150

100

285

240


210

24

3


8-23

255

230

838

200

125

340

295


265

26

3


12-23

300

260

992

WA42Y-25
WA42Y-25P
WA42Y-25R

25

16

115

85


65

16

2


4-14

110

95

378

32

20

140

100


78

18

2


4-18

115

100

378

40

25

150

110


85

18

3


4-18

120

110

406

50

32

165

125


100

20

3


4-18

135

120

450

65

40

185

145


120

22

3


8-18

160

140

520

80

50

200

160


135

22

3


8-18

170

135

525

100

65

230

190


160

24

3


8-23

195

175

690

125

80

270

220


188

28

3


8-26

210

190

780

150

100

300

250


218

30

3


8-26

255

230

838

200

125

360

310


278

34

3


12-26

300

260

992

WA42Y-40
WA42Y-40P
WA42Y-40R

25

16

115

85

58

65

16

2

4

4-14

110

95

378

32

20

140

100

66

78

18

2

4

4-18

115

100

378

40

25

150

110

76

85

18

3

4

4-18

120

110

406

50

32

165

125

88

100

20

3

4

4-18

135

120

450

65

40

185

145

110

120

22

3

4

8-18

160

140

520

80

60

200

160

121

135

24

3

4

8-18

170

135

525

100

65

235

190

150

160

24

3

4.5

8-23

195

175

690

125

80

270

220

188

176

28

3

4.5

8-26

210

190

857

150

100

300

250

204

218

30

3

4.5

8-26

255

230

838

200

125

375

320

260

282

38

3

4.5

12-30

300

260

992

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