مزدوج زوج الفراشات زوج مزدوج غريب الأطوار

Nominal diameter

40mm~1200mm

Flange standard

ISO7005-2 1988

Maximum operating pressure

1.6MPa

Housing test pressure

1.5 times the working pressure

Seal test pressure

1.1 times the working pressure

Operating temperature range

NBR seat -10°C~80 °C, EPDM seat -20°C~120°C

Allowable temperature for long-term use

NBR seat 0°C~60 °C, EPDM seat 0°C~100°C

material

(See Table of Optional Materials)

Structural dimensions

ISO5752-88

Drive type

handle

50mm~300mm

worm wheel

50mm~1200mm

Pneumatic

50mm~1200mm

electric

50mm~1200mm

Surface treatment

Epoxy polyester coating, nylon 11, baking paint

The name of the item

Adopt standards

Optional criteria

Design, manufacturing and acceptance

GB/T12238-1989

ISO/DIN10631-91

Valve structure length

GB/T12221-1989

ISO5752-88

Valve flange connection

GB9113-1988

ISO7005. 2

Valve inspection

GB/T13927-1992

ISO/DIN5208-87

Valve marking

GB12220-1989

ISO5209-87

The drive is connected

GB12223-1989

ISO/DIN5211-89

Valve supply requirements

GB/T12252

————

Sealing pair material

Applicable temperature

The type of media and the degree of suitability

Outstanding features

fresh water

Sea water

Salts

Strong alkali

Weak alkali

Strong acid

Weak acid

Nature

Alcohols

Air

Steam

Oils

Food

Seat

Nitrile

-12℃~82℃

A

A

A

B

A

D

B

A

C

A

D

A

B

Oil-resistant

Triethylene propylene (EPD).

-35℃~135℃

A

A

A

A

A

C

A

B

B

A

A

C

A

Resistant to aging

Corrosion-resistant EPDM

-35℃~160℃

A

A

A

A

A

A

A

B

B

A

A

C

A

Corrosion resistance, aging resistance

Viton

-23℃~135℃

A

A

A

A

A

C

A

A

C

A

A

A

A

High temperature resistance, corrosion resistance

polytetrafluoroethylene

-10℃~150℃

A

A

A

C

A

A

A

A

A

A

A

A

A

Corrosion-resistant, high-temperature resistant

Butterfly plates

Ductile iron plating

-30℃~350℃

B

D

C

D

C

D

C

B

A

B

A

A

C

heat resisting

Ductile iron nylon cladding

-30℃~100℃

A

A

A

A

A

D

A

A

C

A

D

A

A

Corrosion resistance, wear resistance

Aluminium bronze

-273℃~232℃

A

B

C

D

C

D

B

A

A

A

A

A

C

Heat-resistant and corrosion-resistant

stainless steel

-268℃~316℃

A

B

C

C

B

C

A

A

A

A

A

A

A

High temperature resistance, corrosion resistance

Called the diameter

The length of the structure
(Typical)

Dimensions
(Reference value)

Connection size        (Typical)

0.6MPa

1.0MPa

1.6MPa

millimetre

inch

L

H

H0

A

B

D0

n-d

D0

n-d

D0

n-d

50

2

43

63

315

180

65

110

4-14

125

4-18

125

4-18

65

21/2

46

70

330

180

65

130

4-14

145

4-18

145

4-18

80

3

46

83

390

245

72

150

4-18

160

8-18

160

8-18

100

4

52

105

431

240

72

170

4-18

180

8-18

180

8-18

125

5

56

115

455

240

72

200

8-18

210

8-18

210

8-18

150

6

56

137

626

350

93

225

8-18

240

8-22

240

8-22

200

8

60

164

720

350

93

280

8-18

295

8-22

295

12-22

250

10

68

206

800

550

350

335

12-18

350

12-22

355

12-26

300

12

78

230

860

600

350

395

12-22

400

12-22

410

12-26

350

14

78

248

883

600

350

445

12-22

460

16-22

470

16-26

400

16

102

289

972

600

350

495

16-22

515

16-26

525

16-30

450

18

114

320

1043

750

380

550

16-22

565

20-26

585

20-30

500

20

127

343

1098

750

380

600

20-22

620

20-26

650

20-33

600

24

154

413

1236

750

380

705

20-26

725

20-30

770

20-36

700

28

165

478

1431

750

380

810

24-26

840

24-30

840

24-36

800

32

190

525

1488

750

380

920

24-30

950

24-33

950

24-39

900

36

203

620

1615

1250

380

1020

24-30

1050

28-33

1050

28-39

1000

40

216

725

1765

1500

580

1120

28-30

1160

28-36

1170

28-42

1200

48

254

780

1976

1500

580

1340

32-33

1380

32-39

1390

32-48