Diaphragm Valve,
Metal
Construction
The GEM 698 motorized 2/2 way diaphragm valve has a low
maintenance electric actuator with a toothed belt drive and a
reversible synchronous motor. A manual override and an optical
position indicator are standard.
Features
H
H
H
H
H
H
H
Suitable for inert and corrosive* liquid and gaseous media
Stainless steel body with CIP/SIP cleaning and sterilizing
capabilities
The valve stroke can be limited by means of adjustable
limit switches
Insensitive to particulate media
Valve body and diaphragm available in various materials
and designs
Various connections available
Surface finishes down to 0.25 m, electropolished
Suitable for use as a control valve
(with GEM 1284)
Advantages
H
H
H
H
Optional flow direction, will seal in either flow direction
up to full working pressure
Optional mounting position
Consistent control system and reliable opening and closing action
Direct 0/4 - 20 mA control using the optional module
GEM 1284
Electrical position feedback by means of a potentiometer
available as an option
* see information on working medium on page 2
Actuator dimensions - GEM 698 (mm)
698
Technical data
Working medium
Rating
Corrosive, inert, gaseous and liquid media which have
no negative impact on the physical and chemical
properties of the body and diaphragm material.
Continuously rated
Working temperature
max. 150 C
(depending on the medium wetted materials)
Operating time
Standard design
Admissible temperatures
appr. 20 sec.
Protection class
Ambient temperature
-10...+55 C
Storage temperature
-15...+55 C
IP 65 acc. to DIN 40050
Power consumption
Cable gland
10 VA
2 x PG 13.5
Order data
Nominal size Working pressure
Kv value*
Weight (kg)
(mm)
(bar)
(m3/h)
Butt weld spigots
15
20
25
32
40
50
0 - 10
0 - 10
0 - 10
0-6
0-6
0 - 6/4**
11.0
12.5
21.0
43.0
50.0
64,0
2.7
2.8
3.1
7.0
7.5
11.5
Connections
Butt weld spigots
DIN
DIN 11850/Series 1
DIN 11850/Series 2
DIN 11850/Series 3
SMS 3008
BS O.D. Tubing
ASTM 269/270 ASME BPE
ISO
<
Code
Tank bottom valve body
B**
Straight through
Multi-port design
M**
T-body
T*
Clamp connections
DIN 32676
DIN 32676
SMS 3007
BS 4825 (Part 3)
BS 4825 (Part 3)
* For dimensions see T Valves brochure
** Dimensions and versions upon request or according to customer
requirements
698
0
16
17
18
37
55
59
60
Threaded connections
Threaded sockets
DIN ISO 228
1
Threaded spigots
(Dairy pipe unions acc. to DIN 11851)
6
One side dairy pipe union (DIN 11851)
other side cone spigot with union nut
62
Aseptic unions upon request
Flanges
Flanges EN 1092-2 / PN16 / Form B,
8
(ex DIN 2501 / PN16 / Form C)
length EN 558-1, series 1
ISO 5752, basic series 1 (ex DIN 3202-1, series F1)
All pressures are given as gauge pressures when applied
upstream only.
* Given Kv values are valid for valve body connection ISO,
diaphragm material EPDM.
** DN 50 with PTFE diaphragm up to 4 bar
Kv values determined with p1 = 6 bar, diaphragm material EPDM.
Body configuration
Code
(see page 7)
85
86
87
88
89
Valve body material
Cast iron
EN-GJS-400-18-LT
Supply voltages
Code
GG
S.G. iron
8
17
24 V
10%
120 V
10%
18
230 V
10%
PFA lined
S.G. iron
EN-GJS-400-18-LT
PP lined
1.4435 (ASTM A 351 CF3M) Investment casting* 34
1.4408
Cast stainless steel 37
1.4435 (316 L)
Forged body
40
* Material equivalency 316 L
Diaphragm material
Frequency
Code
FPM
EPDM
max. 130C*
12**
EPDM
max. 150C*
13**
EPDM
max. 90C*
14
EPDM
max. 150C*
16**
PTFE/EPDM convex PTFE loose
max. 150C*
5E**
PTFE/FPM convex
PTFE loose
max. 150C*
5F
PTFE/silicone convex PTFE loose
max. 160C*
5S**
Code
50/60 Hz
PTFE/EPDM
PTFE lamin. max. 150C* 52**
* Steam sterilization temperature / 20 min
** Material complies with FDA requirements
Design
Code
PG gland, terminal block
PG gland, terminal block
with potentiometer
6049
Valve surface finishes, internal finish
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
Order example
698
Type
Nominal size
Body configuration (code)
Connection (code)
Valve body material (code)
Diaphragm material (code)
Supply voltage (code)
Frequency (code)
Design (code)
Surface finish (code)
698
25
60
34
12
6049
1500
25
D
60
34
12
L
4
6049
1500
698
Actuator dimensions (mm)
DN
A1
15 - 25
32 - 40
50
222
271
278
82
131
138
Body dimensions - Butt weld spigots, material code 33, 34, 40 (mm)
DIN
DIN 11850 DIN 11850 DIN 11850 SMS 3008 ISO 4200
series 0; code 0 series 1; code 16 series 2; code 17 series 3; code 18
LS
DN
(min)
15
20
25
32
40
50
120
120
120
153
153
173
25
25
25
25
25
30
H1* H1** f
13
16
19
24
26
32
19
19
19
26
26
32
40
40
40
68
75
90
g d
13.5
13.5
13.5
13.5
13.5
13.5
H1* valid for investment cast design;
698
18
22
28
34
40
52
code 37
code 60
1.5
1.5
1.5
1.5
1.5
1.5
18
22
28
34
40
52
1.0
1.0
1.0
1.0
1.0
1.0
19
23
29
35
41
53
1.5
1.5
1.5
1.5
1.5
1.5
20
24
30
36
42
54
2.0
2.0
2.0
2.0
2.0
2.0
25.0
33.7
38.0
51.0
1.2
1.2
1.2
1.2
21.3
26.9
33.7
42.4
48.3
60.3
H1** valid for forged design
BS 4825
code 55
s NPS d
1.6
1.6
2.0
2.0
2.0
2.0
1/2 12.70
3/4 19.05
1 25.40
1 1/4 31.75
1 1/2 38.10
2 50.80
s
1.2
1.2
1.6
1.6
1.6
1.6
ASTM 269/
ASME BPE
code 59
12.70 1.65
19.05 1.65
25.40 1.65
38.10 1.65
50.80 1.65
Body dimensions - Threaded sockets DIN ISO code 1, material code 8, 37 (mm)
DN
H1
SW
Material code 8 Material code 37
1/2
3/4
1
1 1/4
1 1/2
2
15
20
25
32
40
50
85
85
110
120
140
165
9
10
13
16
18
18
16
17
17
25
25
34
30
33
37
50
52
69
32
41
46
55
65
75
Number of
wrench surfaces
6
6
6
6
6
6
27
32
41
50
55
70
Body dimensions - Flanges code 8 (mm)
Material code 34 (1.4435)
Material code 8 (cast iron)
DN
H1
No. of
bolt holes
H1
No. of
bolt holes
15
20
25
32
40
50
150
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
130
150
160
180
200
230
36
41
47
57
57
69
18
21
24
28
32
37
95
105
115
140
150
165
14
14
14
18
18
18
65
75
85
100
110
125
4
4
4
4
4
4
698
Body dimensions - Dairy pipe unions to DIN 11851 (code 6), material code 34, 40 (mm)
DN
H1*
H1**
15
20
25
32
40
50
13
16
19
24
26
32
19
19
19
26
26
32
40.0
40.0
40.0
68.0
75.0
90.0
13.5
13.5
13.5
13.5
13.5
13.5
H1* valid for investment cast design;
G
Rd
Rd
Rd
Rd
Rd
Rd
34
44
52
58
65
78
x
x
x
x
x
x
L
1/8
1/6
1/6
1/6
1/6
1/6
118
118
128
147
160
191
H1** valid for forged design
* only with investment cast bodies
Body dimensions - Dairy pipe unions to DIN 11851 (code 62), material code 34, 40 (mm)
DN
H1*
H1**
15
20
25
32
40
50
13
16
19
24
26
32
19
19
19
26
26
32
40.0
40.0
40.0
68.0
75.0
90.0
13.5
13.5
13.5
13.5
13.5
13.5
H1* valid for investment cast design;
H1** valid for forged design
* only with investment cast bodies
698
G
Rd
Rd
Rd
Rd
Rd
Rd
34
44
52
58
65
78
x
x
x
x
x
x
L
1/8
1/6
1/6
1/6
1/6
1/6
116
114
127
147
160
191
Body dimensions - Clamp connections, material code 34, 40 (mm)
DIN 32676
SMS 3007
Code 85
Code 86
Code 87
DN
H1*
H1**
d1
d3
d4
d3
d4
d1
d3
d4
15
20
25
32
40
50
13
16
19
24
26
32
19
19
19
26
26
32
40
40
40
68
75
90
13.5
13.5
13.5
13.5
13.5
13.5
165
165
165
198
198
218
16
20
26
32
38
50
50.5
50.5
-
43.5
43.5
-
34.0
34.0
50.5
50.5
50.5
64.0
27.5
27.5
43.5
43.5
43.5
56.5
165
165
165
198
198
218
22.6
31.3
35.6
48.6
50.5
50.5
50.5
64.0
43.5
43.5
43.5
56.5
H1* valid for investment cast design;
H1** valid for forged design
Body dimensions - Clamp connections, material code 34, 40 (mm)
BS 4825
Code 88
Code 89
DN
H1*
H1**
NPS
d1
d3
d4
d3
d4
15
20
25
32
40
50
13
16
19
24
26
32
19
19
19
26
26
32
40
40
40
68
75
90
13,5
13,5
13,5
13,5
13,5
13,5
1/2
3/4
1
1 1/2
2
108
117
127
159
190
9.5
15.85
22.10
34.9
47.6
25
25
50.5
50.5
64.0
43.5
43.5
56.5
50.5
50.5
-
43.5
43.5
-
H1* valid for investment cast design;
H1** valid for forged design
* only with investment cast bodies
698
Overview of valve bodies for GEM 698
1.4408
S.G.iron
1.4435 (code 34/code 40)
1.4539 (code 33)
(code 37)
(code 17/ code 18)
Connection
(code)
16
17
18
37
55
59
60
62
84
85
86
87
88
89
DN
DN
DN
DN
DN
DN
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
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
-
15
20
25
32
40
50
Technical data sheet
Valve body
material (code)
Option
An integral potentiometer is required
only when the actual
value and set value
are compared by a
3-point controller.
For further metal diaphragm valves, accessories and other products,
please see our Product Range catalogue and Price List. Contact GEM.
VALVES, MEASUREMENT
AND CONTROL SYSTEMS
GEM Gebr. Mller Apparatebau GmbH & Co. KG Fritz-Mller-Str. 6-8 D-74653 Ingelfingen-Criesbach Telefon +49 (0) 7940/123-0 Telefax +49 (0) 7940/123-224
e-mail: info@gemue.de http://www.gemue.de
Subject to alteration 08/2006 88048769
With an integral potentiometer, wiring
of switches S1 + S2 on terminals
6 and 7 is not necessary.
Should there be any doubts or misunderstandings, the German
version of this data sheet is the authoritative document!
Connection diagram - GEM 698
