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658, 688

GEM 688

GEM 658

Diaphragm ValveTwo Stage Actuator

Metal

ConstructionThe GEM 658/688 2/2 way or multi-port metal diaphragm valvehas a two stage actuator.The actuator has a stainless steel housing and is controlled bytwo pistons working independently of each other (for function seepage 2).

Features Suitable for inert, corrosive*, liquid and gaseous media Chemical resistance of actuator CIP / SIP cleaning and sterilizing capabilities An adjusting screw in the actuator head enables the setting

of the opening and closing function and also the setting ofa part stroke (for reduced flow) Quick ON/OFF operation and the possibility for precision

dosing of the working medium Insensitive to particulate media Valve body and diaphragm available in various materials and

designs Various connections available Compact design

Advantages Optional flow direction, will seal in either flow direction

up to full working pressure Optional mounting position Can be individually used. Space consuming piping systems

and valve wiring are no longer necessary Extensive range of accessories (e.g. pilot valves,

limit switches, field bus connections)

Actuator dimensions /version [mm]Diaphragm

sizeWeight

kgType Version B A A1 A2

10

25

4050

658

688

688688

1T1

1V1

2V12V1

61

98

168168

169

216

320328

27

64

7684

51

50

9595

1.7

5.6

19.019.4

* see information on working medium on page 2

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658, 6882

Tank bottom valve body* B

Body configuration Code

Straight through D

Multi-port design* M

T valve body* T

* see special brochures

Connections

Order data

Functional descriptionWhen control pressure is applied, the lower actuator pistonstrokes 100%. The stroke of the upper part of the actuator,however, can be steplessly limited from 0% to 100% bymeans of the stroke limiter (item 17) and secured by thelocking nut (item 16).When a stroke limiter is used, the actuator piston (item 13)moves against the stroke limiter (item 17) and flowrestriction is possible.

If the lower part of the actuator is under control pressure,the valve fully opens, pushing the spindle (item 27) upwardsthrough the upper actuator piston.

Application example

Welds

Butt weld spigotsSpigots DIN 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

Control mediumInert gases

Max. permissible temperature of control medium 60C

Working medium

The valve will seal against flow in either direction

up to full working pressure (gauge pressure).

Corrosive, inert, liquid and gaseous media whichhave no negative impact on the physical andchemical properties of the body and diaphragmmaterial.

Technical data

[m3/h] [kg]Type EPDM/FPM PTFE [bar]Diaphragm size

658

688

688

688

0 - 10

0 - 10

0 - 10

0 - 10

0 - 6

0 - 6

0 - 6

0 - 6

4.5 - 6.0

5.5 - 7.0

3.5 - 7.0

5.5 - 7.0

10

25

40

50

4.4

5.5

8.8

15.4

19.8

39.653.9

91.3

1.6

1.6

4.9

4.9

4.9

19.019.0

19.6

Kv value * WeightWorking pressure [bar] Control pressure

Working temperature max. 150C(depending on medium wetted materials)

All pressures are given as gauge pressures, when applied upstream only.* Given Kv values are valid for ISO valve body connection. (For Kv values for different connections consult GEM.)Kv values determined at p1 = 5 bar, EPDM diaphragm material.

DN

10

15

15

20

25

3240

50

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Valve body material Code1.4435 (ASTM A 351 CF3M) Investment casting* 34

1.4408 Cast stainless steel 37

1.4435 (316 L) Forged body 40

1.4435 (316 L) Block material 41

Control function CodeNormally closed 1

Diaphragm material Code

EPDM max. 130C 12

FPM 4

EPDM max. 150C 13

PTFE/EPDM PTFE laminated max. 150C 52**

EPDM max. 150C 16

PTFE/EPDM convex PTFE loose max. 150C 5E*

PTFE/FPM convex PTFE loose max. 150C 5F*

PTFE/Silicon convex PTFE loose max. 160C 5S*

* Diaphragm size 25 - 50** Diaphragm size 10

1503

1

13

34

60

25

D

Type

Nominal size (mm)

Body configuration (code)

Connection (code)

Valve body material (code)

Diaphragm material (code)

Control function (code)

Surface finish (code)

Order example688

688 25 D 60 34 13 1 1503

Threaded connectionsThreaded sockets DIN ISO 228 1Threaded spigots DIN 11851 6One side threaded spigot, other sidecone spigot with union nut, DIN 11851 62

Aseptic unions upon requestFlanges DINFlanges DIN 2501, form C,length EN 558-1, series 1 4

For overview of available valve bodies for GEM 658/688 see page 6

Connections Code

Order data

Valve body surface finish, 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 0.4 m mechanically polished internal,blasted external 1536




* Ra acc. to DIN 4768; at defined reference points

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 BPElength EN 558-1, series 7 88Clamp DIN 32676 for pipe DIN 11850length EN 558-1, series 7 8A Clamp SMS 3017 for pipe SMS 3008

length EN 558-1, series 7 8E

* Material equivalency 316L

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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

10

15

20

15

20

25

32

40

50

3/8

1/2

3/4

1/2

3/4

1

1 1/4

1 1/2

2

10

10

10

25

25

25

40

40

50

108

108

108

120

120

120

153

153

173

12.5

12.5

12.5

13

16

19

24

26

32

12.5

12.5

12.5

19

19

19

26

26

32

25

25

25

25

25

25

25

25

30

17.2 x 1.6

21.3 x 1.6

-

21.3 x 1.6

26.9 x 1.6

33.7 x 2.0

42.4 x 2.0

48.3 x 2.0

60.3 x 2.0

-

18 x 1.5

-

18 x 1.5

22 x 1.5

28 x 1.5

34 x 1.5

40 x 1.5

52 x 1.5

12 x 1.0

18 x 1.0

-

18 x 1.0

22 x 1.0

28 x 1.0

34 x 1.0

40 x 1.0

52 x 1.0

13 x 1.5

19 x 1.5

-

19 x 1.5

23 x 1.5

29 x 1.5

35 x 1.5

41 x 1.5

53 x 1.5

14 x 2.0

20 x 2.0

-

20 x 2.0

24 x 2.0

30 x 2.0

36 x 2.0

42 x 2.0

54 x 2.0

9.53 x 1.2

12.70 x 1.2

19.05 x 1.2

12.70 x 1.2

19.05 x 1.2

-

-

-

-

9.53 x 0.89

12.70 x 1.65

19.05 x 1.65

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

17.3 x 1.65

21.7 x 2.10

-

21.7 x 2.10

27.2 x 2.10

34.0 x 2.80

42.7 x 2.80

48.6 x 2.80

60.5 x 2.80

30

30

30

40

40

40

68

75

90

13.5

13.5

13.5

13.5

13.5

13.5

13.5

13.5

13.5

-

-

-

-

-

25.0 x 1.2

33.7 x 1.2

38.0 x 1.2

51.0 x 1.2

-

-

-

-

-

25.4 x 1.20

31.8 x 1.20

38.1 x 1.20

50.8 x 1.50

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

Dimensions in mm

Body dimensions - Butt weld spigots

DNDiaphragmsize G H H 1 t L SW Number of wrench surfaces

12

15

15

20

25

32

40

50

10

10

25

25

25

40

40

50

G 3/8

G 1/2

G 1/2

G 3/4

G 1

G 1 1/4

G 1 1/2

G 2

23

29

30

33

37

50

52

69

10.5

13.5

16

17

17

25

25

34

13

15

9

10

13

16

18

18

55

68

85

85

110

120

140

165

22

24

27

32

41

50

55

70

2

2

6

6

6

8

8

8

Body dimensions - Threaded sockets DIN ISO Connection code 1 [mm]

For materials see overview on last page

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

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Code 6 Code 62

DNDiaphragmsize NPS L H H 1 D d kNumber ofbolt holes

15

20

25

32

40

50

1/2

3/4

1

1 1/4

1 1/2

2

25

25

25

40

40

50

* no EN length

130*

150

160

180

200

230

30

36

43

52

57

69

13

16

19

24

26

32

95

105

115

140

150

165

14

14

14

18

18

18

65

75

85

100

110

125

4

4

4

4

4

4

Body dimensions - Flanges Connection code 4 [mm]

Body dimensions - Threaded connections acc. to DIN 11851

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

DiaphragmsizeDN H1* H1** f* g* d1 G L(Code 6)

L(Code 62)

10

10

25

25

25

40

40

50

10

15

15

20

25

32

40

50

12.5

12.5

13

16

19

24

26

32

12.5

12.5

19

19

19

26

26

32

30.0

30.0

40.0

40.0

40.0

68.0

75.0

90.0

13.5

13.5

13.5

13.5

13.5

13.5

13.5

13.5

10.0

16.0

16.0

20.0

26.0

32.0

38.0

50.0

Rd 28 x 1/8

Rd 34 x 1/8

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

118

118

118

118

128

147

160

191

116

116

116

114

127

147

160

191

For materials see overview on last page

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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: [email protected] http://www.gemue.de

Subjecttoalteration08/200688252806

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

Body dimensions - ClampsCode 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

10

15

20

15

2025

32

40

50

3/8

1/2

3/4

1/2

3/41

1 1/4

1 1/2

2

10

10

10

25

2525

40

40

50

12.5

12.5

12.5

19

1919

26

26

32

-

9.40

15.75

9.40

15.7522.10

-

34.80

47.50

-

25.00

25.00

25.00

25.0050.50

-

50.50

64.00

-

88.90

101.60

101.60

101.60114.30

-

139.70

158.75

14.00

18.10

-

18.10

23.7029.70

38.40

44.30

56.30

-

9.40

15.75

9.40

15.7522.10

-

34.80

47.50

10.00

16.00

-

16.00

20.0026.00

32.00

38.00

50.00

-

-

-

-

-22.60

31.30

35.60

48.60

-

-

-

-

-50.50

50.50

50.50

64.00

-

-

-

-

-127.00

146.00

159.00

190.00

25.40

50.50

-

50.50

50.5050.50

64.00

64.00

77.50

-

25.00

25.00

25.00

25.0050.50

-

50.50

64.00

34.00

34.00

-

34.00

34.0050.50

50.50

50.50

64.00

108

108

-

108.00

117.00127.00

146.00

159.00

190.00

-

108.00

117.00

108.00

117.00127.00

-

159.00

190.00

108.00

108.00

-

108.00

117.00127.00

146.00

159.00

190.00

Dimensions in mm

Overview of valve bodies for GEM 658, 688 body configuration D

10

1520

15

20

25

32

40

50

10

1010

25

25

25

40

40

50

-

X-

X

X

X

X

X

X

-

--

Z

Z

Z

Z

Z

Z

-

ZZ

-

-

-

-

-

-

-

--

F

F

F

F

F

F

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

Y

Y-

Y

Y

Y

Y

Y

Y

-

--

-

-

X

X

X

X

Y

XX

X

X

-

-

-

-

Y

YX

X

X

X

-

X

X

X

X-

X

X

X

X

x

x

B

B-

B

B

B

B

B

B

B

B-

B

B

B

B

B

B

-

KK

K

K

K

-

K

K

K

W-

W

K

K

W

W

W

-

KK

K

K

K

-

K

K

-

K-

K

K

K

K

K

K

-

--

-

-

K

K

K

K

041 1 16 17 18 35 36 37 55 59 60 6 62 80 82 88 8A 8E

DNMG*

Connectioncode

B Welded construction in material code 34 and 40F Body in material code 37

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

* MG = diaphragm size

* MG = diaphragm size

Technicaldatasheet

Shouldtherebeanydoubtsormisunderstandings,

theGerman

versionofthisdatasheetistheauthoritativedocument!

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