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PVDF Flange Diaphragm Valves

PVDF Flange Diaphragm Valves

Features
With the birth of the company, we produced the first plastic diaphragm valve in 1979 and obtained certification from the Ministry of Chemical Industry in 1983.
The Diaphragm valve uses a high-quality sealing material, exhibiting ower compressive strain, for its diaphragm and cushion, resulting in optimum sealing performance.
The Diaphragm valve is designed so that pressure is distributed evenly. This design allows the hand-wheel torque to be reduced and maintains shut-off at low torque.
The strict control of the processing and assembly process, The flow adjustment is more stable and accurate
The diaphragm valve structure has no dead angle, no pollution to the medium, strong corrosion resistance, no packing wear, and excellent internal sealing performance.
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PVDF Flange Diaphragm Valves Details


Parts&Material

NO.

Parts

Materials

1

gauge cover

PC

2

 student

 steel， stainless steel

3

hand wheel

ABS， FRPP

4

Bonnet

HR-PPFRPP， PPH， UPVC， CPVC， PVDF

5

sleeve

castiron， copper alloy

6

Board

Plastic-coated steel， stainless steel

7

Stud Bolt & Nut

steel， stainless steel

8

Stem

steel， stainless steel， copper alloy

9

Body

FRPP，PPH，UPVC，CPVC，PVDF

10

compressor

PVDF， CPVC， castiron

11

Cushion

EPDM

12

 Diaphragm

EPDM，FPM，FEP，PFA，PTFE

13

Grease Nipple

copper alloy， stainless steel DN80-300 used only


Cv reference value 100% fully open

DN

CV value

15

5.4

20

6.3

25

7.2

32

8.1

40

23.4

50

43.2

65

76.5

80

103.5

100

166.5

125

270

150

360

200

630

250

900

300

900


(Mpa) Temperature%Pressure chart

DN

FRPP

PPH

UPVC

CPVC

PVDF

20℃

60℃

90℃

20℃

60℃

85℃

20℃

50℃

20℃

60℃

85℃

20℃

60℃

90℃

120℃

15

1

0.8

0.3

1

0.7

0.3

1

0.5

1

0.8

0.3

1

1

0.6

0.4

20

1

0.8

0.3

1

0.7

0.3

1

0.5

1

0.8

0.3

1

1

0.6

0.4

25

1

0.8

0.3

1

0.7

0.3

1

0.5

1

0.8

0.3

1

1

0.6

0.4

32

1

0.6

0.3

1

0.5

0.3

1

0.5

1

0.6

0.3

1

1

0.6

0.4

40

1

0.6

0.3

1

0.5

0.3

1

0.5

1

0.6

0.3

1

1

0.6

0.4

50

1

0.6

0.3

1

0.5

0.3

1

0.5

1

0.6

0.3

1

1

0.6

0.4

65

1

0.5

0.2

1

0.4

0.2

1

0.4

1

0.5

0.2

1

1

0.5

0.3

80

1

0.5

0.2

1

0.4

0.2

1

0.4

1

0.5

0.2

1

1

0.5

0.3

100

1

0.5

0.2

1

0.4

0.2

1

0.4

1

0.5

0.2

1

0.8

0.5

0.3

125

0.5

0.3

0.15

0.5

0.2

0.15

0.6

0.3

0.6

0.3

0.2

0.6

0.6

0.4

0.2

150

0.5

0.3

0.15

0.5

0.2

0.15

0.6

0.3

0.6

0.3

0.2

0.6

0.6

0.4

0.2

200

0.3

0.2

0.1

0.3

0.15

0.1

0.3

0.1

0.3

0.2

0.1

0.4

0.4

0.2

0.1

250

0.3

0.2

0.1

0.3

0.15

0.1

0.3

0.1

0.3

0.2

0.1

0.3

0.3

0.2

0.1

300

0.3

0.2

0.1

0.3

0.15

0.1

0.3

0.1

0.3

0.2

0.1

0.3

0.3

0.2

0.1

Test data for EPDM+PTFE double-layer diaphragm for reference

Dimensions Table

DN

D1(mm)

D(mm)

L(mm)

h(mm)

n

Φ(mm)

HG/DIN

JIS

ANSI

HG/DIN

JIS

ANSI

HG/DIN

JIS

ANSI

HG/DIN

JIS

ANSI

HG/DIN

JIS

ANSI

15

95

95

95

65

70

60

125

110

110

14

4

4

4

14

15

16

20

105

100

100

75

75

70

135

120

120

16

4

4

4

14

15

16

25

115

125

125

85

90

79

145/160

130

130

16

4

4

4

14

15

16

32

135

135

135

100

100

89

160/180

160

160

16

4

4

4

18

19

16

40

145

145

145

110

105

98

180

180

180

16

4

4

4

18

19

16

50

160

160

160

125

120

121

210/230

210

210

18

4

4

4

18

19

19

65

180

180

180

145

140

140

250

250

250

22

4

4

4

18

19

19

80

195

195

195

160

150

152

300

280

280

25

8

8

4*

18

19

19

100

215

220

220

180

175

190

350

340

340

25

8

8

8

18

19

19

125

255

255

255

210

210

216

405

405

405

30

8

8

8

18

19

22

150

280

280

280

240

240

241

460

460/480

460/480

30

8

8

8

22

23

22

200

340

340

340

295

290

298

575

575

575

38

8

12*

8

22

23

22

250

395

395

395

350

355

362

685

685

685

38

12

12

12

22

25

26

300

480

480

480

400

400

432

790

790

790

40

12

16*

12

22

25

26

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