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671

ConstructionThe GEM 671 manually operated 2/2 way metal diaphragmvalve has a plastic bonnet and an integral optical positionindicator as standard.

Features Suitable for inert and corrosive* liquid and gaseous media Valve body and diaphragm available in various materials

and designs Various connections available Insensitive to particulate media Surface finishes down to 0.25m, electropolished

Compact design (when space is at a premium)

Advantages Due to its modular design one diaphragm and one bonnet

is used for each modular size range 15/20/25 and 32/40,thus minimizing stocks of valve spares.

Hermetic sealing Optional flow direction, will seal in either flow direction

up to full working pressure Optional mounting position Optional accessories

- Electrical remote indication that the valve is in theopen position

- Lockable handwheel clamp

Diaphragm Valve,Metal

* see information on working medium on page 2

Bonnet dimensions (mm)

DNDiaphragmsize B A A1

15-25

32-40

50

65-80

100

25

40

50

80

100

90

114

140

214

214

73

90

111

142

184

14

14

8

17

25

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All pressures are gauge pressures. Wopking pressure values were determined with static working pressure applied on one side of a closedvalve. Sealing at the valve seat and atmospheric sealing is ensured for the given values.Information on working pressures applied on both sides and for high purity media upon request.* Given Kv values are valid for ISO valve body connection, EPDM diaphragm material.Kv values determined with p1 = 6 bar, EPDM diaphragm material.KV values shown are valid for unlined valve bodies. KV values for lined valve bodies are lower depending on the lining.

(kg)(m3/h)EPDM/FPMbar

PTFEbar

WeightKv value*Operating pressureDNDiaphragm

size

15

20

25

32

40

50

6580

100

25

25

25

40

40

50

8080

100

0 - 10

0 - 10

0 - 10

0 - 10

0 - 10

0 - 6

0 - 6

0 - 6

0 - 6

0 - 6

0.7

0.7

0.9

1,5

1.6

3.0

9,510.0

15.0

10.5

13.0

27.0

43.0

50.0

64.0

95.0127.0

205.0

Working mediumCorrosive, inert, gaseous and liquid media which have no negative impact on the physical and chemicalproperties of the body and diaphragm material.

Working temperature (depending on the application) max. 80C

Body configuration CodeStraight through D

Connections Code

Threaded connectionsThreaded sockets DIN ISO 228 1Threaded spigots DIN 11851 6

One side threaded spigot, other sidecone spigot and union nut, DIN 11851 62Aseptic unions upon request

FlangesFlanges DIN 2501, form C,length EN 558-1, series 1 4Flanges ANSI B 16.5, class 150 RF,length MSS SP-88 38

Flanges ANSI B 16.5, class 150 RF,length EN 558-1, series 1 39

Technical data

Order data

Connections Code

Butt weld spigots 0Spigots DIN 11850, series 1 16Spigots DIN 11850, series 2 17Spigots DIN 11850, series 3 18Spigots JIS-G 3447 35Spigots JIS-G 3459 36Spigots SMS 3008 37Spigots BS 4825, Part 1 55Spigots ASME BPE 59Spigots EN ISO 1127 60

ClampsClamp ASME BPE for pipe ASME BPE,short design 80Clamp following ASME BPE for pipeEN ISO 1127, length EN 558-1 series 7 82Clamp ASME BPE for pipe ASME BPE lengthEN 558-1, series 7 88Clamp DIN 32676 for pipe DIN 11850 lengthEN 558-1, series 7 8A Clamp SMS 3017 for pipe SMS 3008 lengthEN 558-1, series 7 8E

For overview of available valve bodies for 671 see page 6

Max. ambient temperature 60C

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Valve body material CodeEN-GJL-250 GG 25 (CI) 8

EN-GJS-400-18-LT GGG 40.3 (SG iron) 17PFA lined

EN-GJS-400-18-LT GGG 40.3 (SG iron) 18PP lined

1.4408 Investment casting 39PFA lined

1.4435 (ASTM A 351 CF3M) Investment casting* 34

1.4408 Cast stainless steel 37

1.4435 (316 L) Forged stainless steel 40

Diaphragm material Code

EPDM 12*

FPM 4

EPDM 13*

PTFE/EPDM PTFE laminated 52*

EPDM 16*

PTFE/EPDM convex PTFE loose 5E*

PTFE/FPM convex PTFE loose 5FPTFE/Silicone convex PTFE loose 5S*

* Material equivalency 316 L

Control function CodeManually operated 0

Accessories CodeThreaded connection for position indicator Z

Manually operated (lockable handwheel) L

Order example 15 D 4 8 14 0 Z 1500

Type

Nominal size

Body configuration (code)

Connection (code)

Valve body material (code)

Diaphragm material (code)

Control function (code)

Accessories (code)Surface finish (code)

671

15

D

4

8

14

0

Z1500

671

Valve body surface finishes, internal contour Code

Ra 6.3 m blasted internal/external 1500

Ra 6.3 m electropolished internal/external 1509

Ra 0.8 m mechanically polished internal, blasted external 1502

Ra 0.8 m electropolished internal/external 1503

Ra 0.6 m mechanically polished internal, blasted external 1507

Ra 0.6 m electropolished internal/external 1508

Ra 0.4 m mechanically polished internal, blasted external 1536

Ra 0.4 m electropolished internal/external 1537

Ra 0.25 m mechanically polished internal, blasted external 1527

Ra 0.25 m electropolished internal/external 1516

Ra acc. to DIN 4768; at defined reference points

* Material complies with FDA requirements

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*

*

ISO DINSelection

series

DIN 11850Series 1 Series 2 Series 3

SMS3008

BS O.D.4825

ASME/BPE

JIS-G3459

JIS-G3447

Code 55 Code 59 Code 36 Code 35Code 0 Code 16 Code 17 Code 18 Code 37Code 60

d x s d x s d x s d x s d x s d x s d x s d x s d x s d x sDN NPS MG

15

20

25

3240

50

65

80

100

1/2

3/4

1

1 1/41 1/2

2

2 1/2

3

4

25

25

25

4040

50

80

80

100

120

120

120

153153

173

216

254

305

13

16

19

2426

32

-

-

-

19

19

19

2626

32

62

62

76

25

25

25

2525

30

30

30

30

21.3 x 1.6

26.9 x 1.6

33.7 x 2.0

42.4 x 2.048.3 x 2.0

60.3 x 2.0

76.1 x 2.0

88.9 x 2.3

114.3 x 2.3

18 x 1.5

22 x 1.5

28 x 1.5

34 x 1.540 x 1.5

52 x 1.5

-

-

-

18 x 1.0

22 x 1.0

28 x 1.0

34 x 1.040 x 1.0

52 x 1.0

-

-

-

19 x 1.5

23 x 1.5

29 x 1.5

35 x 1.541 x 1.5

53 x 1.5

70 x 2.0

85 x 2.0

104 x 2.0

20 x 2.0

24 x 2.0

30 x 2.0

36 x 2.042 x 2.0

54 x 2.0

-

-

-

12.70 x 1.2

19.05 x 1.2

-

--

-

-

-

-

12.70 x 1.65

19.05 x 1.65

25.40 x 1.65

-38.10 x 1.65

50.80 x 1.65

63.50 x 1.65

76.20 x 1.65

101.60 x 2.11

21.7 x 2.10

27.2 x 2.10

34.0 x 2.80

42.7 x 2.8048.6 x 2.80

60.5 x 2.80

76.3 x 3.00

89.1 x 3.00

114.3 x 3.00

40

40

40

6875

90

-

-

-

13.5

13.5

13.5

13.513.5

13.5

-

-

-

-

-

25.0 x 1.2

33.7 x 1.238.0 x 1.2

51.0 x 1.2

63.5 x 1.6

76.1 x 1.6

101.6 x 2.0

-

-

25.4 x 1.20

31.8 x 1.2038.1 x 1.20

50.8 x 1.50

63.5 x 2.00

76.3 x 2.00

101.6 x 2.00

*f *g L H1* H1**LS (min.)

Dimensions in mm

valid for investment cast design **valid for forged designMG = diaphragm size

Body dimensions - Butt weld spigots

Body dimensions - Threaded sockets DIN ISO code 1, material code 8, 37 (mm)

DNDiaphragm

size G H H 1 t LSW

Material code 8 Material code37Number of wrench surfaces

15

20

25

3240

50

25

25

25

4040

50

1/2

3/4

1

1 1

2

30

33

37

5052

69

16

17

17

2525

34

9

10

13

1618

18

85

85

110

120140

165

27

32

41

5055

70

32

41

46

5565

75

6

6

6

88

8

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Code 6 Code 62

Body dimensions - Flanges Code 4 (mm)

8 34 17, 18, 39

Material code

Code 4 Code 38 Code 39

Connection code

DN L L LNPS MG H H HH 1 H 1 H 1 D D D d d d k k kNo. ofbolt holesNo. of

bolt holesAnz. der

Bohrungen

15

20

25

32

40

50

65

80

100

33

35

38

50

54

66

-

81

104

19

19

19

28

28

35

-

33

43

30

36

43

52

57

69

106

117

146

13

16

19

24

26

32

61

62

76

32

38

43

55

64

75

-

116

141

18

21

24

30

34

40

-

60

73

130*

150

160

180

200

230

290

310

350

95

105

115

140

150

165

185

200

220

14

14

14

18

18

18

18

18

18

65

75

85

100

110

125

145

160

180

4

4

4

4

4

4

4

8

8

-

146

146

-

175

200

-

260

327

-

98.5

108

-

127

152.4

-

190.5

228.6

-

15.7

15.7

-

15.7

19.1

-

19.1

19.1

-

69.9

79.2

-

98.6

120.7

-

152.4

190.5

-

4

4

-

4

4

-

4

8

130*

150

160

180

200

230

290

310

350

88.9

98.5

108

117.3

127

152.4

177.8

190.5

228.6

15.7

15.7

15.7

15.7

15.7

19.1

19.1

19.1

19.1

60.5

69.9

79.2

88.9

98.6

120.7

139.7

152.4

190.5

4

4

4

4

4

4

4

4

8

25

40

50

80

100

1/2

3/4

1

1 1/4

1 1/2

2

2 1/2

3

4

Body dimensions - Threaded connections to DIN 11851

* only valid for investment cast design ** valid for forged design

* Material code 34 L = 150 mm (no DIN length)MG = diaphragm size

DiaphragmsizeDN H1* H1** f* g* G

L(Code 6)

L(Code 62)

25

25

25

40

40

50

80

80

15

20

25

32

40

50

65

80

13

16

19

24

26

32

-

-

19

19

19

26

26

32

62

62

40.0

40.0

40.0

68.0

75.0

90.0

-

-

13.5

13.5

13.5

13.5

13.5

13.5

-

-

Rd 34 x 1/8

Rd 44 x 1/6

Rd 52 x 1/6

Rd 58 x 1/6

Rd 65 x 1/6

Rd 78 x 1/6

Rd 95 x 1/6

Rd 110 x 1/4

118

118

128

147

160

191

246

256

116

114

127

147

160

191

246

256

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Technicaldata

sheet

VALVES, ACTUATORSAND CONTROL SYSTEMS

GEM Gebr. Mller Apparatebau GmbH & Co. KG Fritz-Mller-Str. 6-8 D-74653 Ingelfingen-Criesbach Tel. +49 (0) 7940/123-0 Telefax +49 (0) 7940/123-224e-mail: info@gemue.de http://www.gemue.de

Body dimensions - Clamp connectionsCode 80

for pipe ASME BPECode 82

for pipe EN ISO 1127Code 88

for pipe ASME BPECode 8A

for pipe DIN 11850Code 8E

for pipe SMS 3008

d1 d3 L d1 d1 d1 d1 d3 d3 d3 d3L L L LDN NPS MG H1

15

20

25

32

4050

65

80

100

1/2

3/4

1

1 1/4

1 1/22

2 1/2

3

4

25

25

25

40

4050

80

80

100

19

19

19

26

2632

62

62

76

9.40

15.75

22.10

-

34.8047.50

60.20

72.90

97.38

25.00

25.00

50.50

-

50.5064.00

77.50

91.00

119.00

101.60

101.60

114.30

-

139.70158.75

193.70

222.30

292.10

18.10

23.70

29.70

38.40

44.3056.30

72.10

84.30

109.70

9.40

15.75

22.10

-

34.8047.50

60.20

72.90

97.38

16.00

20.00

26.00

32.00

38.0050.00

66.00

81.00

100.00

-

-

22.60

31.30

35.6048.60

60.30

72.90

97.60

-

-

50.50

50.50

50.5064.00

77.50

91.00

119.00

-

-

127,00

146,00

159,00190,00

216,00

254,00

305,00

50.50

50.50

50.50

64.00

64.0077.50

91.00

106.00

144.50

25.00

25.00

50.50

-

50.5064.00

77.50

91.00

119.00

34.00

34.00

50.50

50.50

50.5064.00

91.00

106.00

119.00

108.00

117.00

127.00

146.00

159.00190.00

216.00

254.00

305.00

108.00

117.00

127.00

-

159.00190.00

216.00

254.00

305.00

108.00

117.00

127.00

146.00

159.00190.00

216.00

254.00

305.00

Dimensions in mm

Overview of valve bodies for GEM 671Material(Code) 39 8 37 8,17,18 Code 33, Code 34, Code 40

Connection

(Code)

25

25

25

40

40

50

80

80

100

15

20

25

32

40

50

65

80

100

X

X

X

X

X

X

-

-

-

-

X

X

-

X

X

-

-

-

X

X

X

X

X

X

-

-

-

X

X

X

X

X

X

-

-

-

X

X

X

X

X

X

-

-

-

X

X

X

X

X

X

-

X

X

X

X

X

X

X

X

-

X

X

X

X

X

X

X

X

-

-

-

B

B

B

B

B

B

W

W

W

B

B

B

B

B

B

W

W

-

X

X

X

X

X

X

-

-

-

X

X

X

X

X

X

Y

Y

Y

X

X

X

X

X

X

-

-

-

-

-

X

X

X

X

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

-

-

X

X

X

X

Y

Y

Y

B

B

B

B

B

B

W

W

W

X

X

-

-

-

-

-

-

-

X

X

X

-

X

X

Y

Y

Y

X

X

X

X

X

X

Y

Y

Y

B

B

B

B

B

B

W

W

-

K

K

K

-

K

K

K

K

W

W

K

K

W

W

W

K

W

W

K

K

K

-

K

K

K

K

W

K

K

K

K

K

K

K

W

W

-

-

K

K

K

K

K

K

W

4DN MG

38 39 1 1 4 39 0 4 6 16 17 18 35 36 37 39 55 59 60 62 80 82 88 8A 8E

X Spigot body in material code 34 and 40Y Spigot body in material code 40B Welded construction in material code 34 and 40W Welded construction in material code 40K Connections completely machined (not welded) in material code 40

MG = diaphragm size

Subjectto

alteration

09/2006

88048761

For further metal diaphragm valves, accessories and other products,please see our Product Range catalogue and Price List.Contact GEM.

MG = diaphragm size

Shouldtherebeanydoubtsormisunderstandings,

theGerman

versionofthisdata

sheetistheauthoritativedocument!