GEM 671 User manual

GEMÜ 611/671
Manually operated diaphragm valve
Operating instructions
EN
further information
webcode: GW-611/671

All rights including copyrights or industrial property rights are expressly reserved.
Keep the document for future reference.
© GEMÜ Gebr. Müller Apparatebau GmbH & Co. KG
18.07.2023
www.gemu-group.com2 / 41GEMÜ 611/671

Contents
1 General information ............................................. 4
1.1 Information .................................................... 4
1.2 Symbols used ................................................ 4
1.3 Definition of terms ........................................ 4
1.4 Warning notes ............................................... 4
2 Safety information ............................................... 5
3 Product description ............................................. 5
3.1 Construction .................................................. 5
3.2 Description ..................................................... 6
3.3 Function ......................................................... 6
3.4 Product label ................................................. 6
4 GEMÜ CONEXO .................................................... 7
5 Correct use .......................................................... 7
6.1 Order codes ................................................... 8
6.2 Order example ............................................... 10
7 Technical data ..................................................... 11
7.1 Medium .......................................................... 11
7.2 Temperature .................................................. 11
7.3 Pressure ......................................................... 11
7.4 Product conformity ....................................... 13
7.5 Mechanical data ............................................ 13
8 Dimensions .......................................................... 15
8.1 Actuator dimensions ..................................... 15
8.2 Body dimensions ........................................... 16
9 Manufacturer's information .................................. 30
9.1 Packaging ...................................................... 30
9.2 Transport ....................................................... 30
9.3 Storage ........................................................... 30
9.4 Delivery .......................................................... 30
10 Installation in piping ............................................ 30
10.1 Preparing for installation .............................. 30
10.2 Installation position ....................................... 30
10.3 Installation with butt weld spigots ............... 31
10.4 Installation with threaded spigots ................ 31
10.5 Installation with threaded sockets ............... 31
10.6 Installation with flanged connection (GEMÜ
671) ................................................................ 31
10.7 Installation with clamp connections ............ 32
10.8 After the installation ...................................... 32
10.9 Operation ....................................................... 32
11 Commissioning .................................................... 33
12 Operation ............................................................. 33
13 Troubleshooting .................................................. 34
14 Inspection and maintenance ................................ 35
14.1 Spare parts .................................................... 35
14.2 Fitting/removing spare parts ........................ 35
15 Removal from piping ............................................ 38
16 Disposal .............................................................. 38
17 Returns ................................................................ 38
18 EU Declaration of Conformity in accordance with
2014/68/EU (Pressure Equipment Directive) ........ 39
19 Manufacturer's declaration according to the Pres-
sure Equipment Directive 2014/68/EU .................. 40
GEMÜ 611/671www.gemu-group.com 3 / 41

www.gemu-group.com4 / 41GEMÜ 611/671
1 General information
1 General information
1.1 Information
- The descriptions and instructions apply to the standard ver-
sions. For special versions not described in this document
the basic information contained herein applies in combina-
tion with any additional special documentation.
- Correct installation, operation, maintenance and repair work
ensure faultless operation of the product.
- Should there be any doubts or misunderstandings, the Ger-
man version is the authoritative document.
- Contact us at the address on the last page for staff training
information.
1.2 Symbols used
The following symbols are used in this document:
Symbol Meaning
Tasks to be performed
Response(s) to tasks
– Lists
1.3 Definition of terms
Working medium
The medium that flows through the GEMÜ product.
1.4 Warning notes
Wherever possible, warning notes are organised according to
the following scheme:
SIGNAL WORD
Type and source of the danger
Possible
symbol for the
specific
danger
Possible consequences of non-observance.
Measures for avoiding danger.
Warning notes are always marked with a signal word and
sometimes also with a symbol for the specific danger.
The following signal words and danger levels are used:
DANGER
Imminent danger!
▶Non-observance can cause death or
severe injury.
WARNING
Potentially dangerous situation!
▶Non-observance can cause death or
severe injury.
CAUTION
Potentially dangerous situation!
▶Non-observance can cause moderate
to light injury.
NOTICE
Potentially dangerous situation!
▶Non-observance can cause damage to
property.
The following symbols for the specific dangers can be used
within a warning note:
Symbol Meaning
Danger of explosion!
Corrosive chemicals!
Hot plant components!
Handwheel can become hot during operation!
Risk of crushing due to rising handwheel!
Damage to the diaphragm if the compressor is
unscrewed too far!

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2 Safety information
The safety information in this document refers only to an indi-
vidual product. Potentially dangerous conditions can arise in
combination with other plant components, which need to be
considered on the basis of a risk analysis. The operator is re-
sponsible for the production of the risk analysis and for com-
pliance with the resulting precautionary measures and re-
gional safety regulations.
The document contains fundamental safety information that
must be observed during commissioning, operation and main-
tenance. Non-compliance with these instructions may cause:
- Personal hazard due to electrical, mechanical and chemical
effects.
- Hazard to nearby equipment.
- Failure of important functions.
- Hazard to the environment due to the leakage of dangerous
substances.
The safety information does not take into account:
- Unexpected incidents and events, which may occur during
installation, operation and maintenance.
- Local safety regulations which must be adhered to by the
operator and by any additional installation personnel.
Prior to commissioning:
1. Transport and store the product correctly.
2. Do not paint the bolts and plastic parts of the product.
3. Carry out installation and commissioning using trained
personnel.
4. Provide adequate training for installation and operating
personnel.
5. Ensure that the contents of the document have been fully
understood by the responsible personnel.
6. Define the areas of responsibility.
7. Observe the safety data sheets.
8. Observe the safety regulations for the media used.
During operation:
9. Keep this document available at the place of use.
10. Observe the safety information.
11. Operate the product in accordance with this document.
12. Operate the product in accordance with the specifications.
13. Maintain the product correctly.
14. Do not carry out any maintenance work and repairs not de-
scribed in this document without consulting the manufac-
turer first.
In cases of uncertainty:
15. Consult the nearest GEMÜ sales office.
3 Product description
3.1 Construction
GEMÜ 611
1
3
4
5
6
7
2
8
Item Name Materials
1 Seal adjuster
2 Manual actuator
3 Position indicator
4 Diaphragm EPDM
FKM
PTFE/EPDM (one-piece)
5 Valve body 1.4408, investment casting
1.4435, investment casting
1.4435 (F316L), forged body
1.4435 (BN2), forged body, Δ
Fe < 0.5 %
1.4539, forged body
CW617N (brass)
6 CONEXO diaphragm
RFID chip
(see Conexo informa-
tion)
7 CONEXO body RFID
chip
(see Conexo informa-
tion)
8 CONEXO actuator RFID
chip
(see Conexo informa-
tion)
3 Product description

www.gemu-group.com6 / 41GEMÜ 611/671
3 Product description
GEMÜ 671
1
3
4
56
2
7
Item Name Materials
1 Position indicator
2 Manual actuator
3 Diaphragm EPDM
FKM
PTFE/EPDM (one-piece)
PTFE/EPDM (two-piece)
PTFE/PVDF/EPDM (three-
piece)
4 Valve body 1.4408, investment casting
1.4408, investment casting
PFA lined
1.4435, investment casting
1.4435 (F316L), forged body
1.4435 (BN2), forged body, Δ
Fe < 0.5 %
1.4539, forged body
CW617N (brass)
EN-GJS-400-18-LT (GGG 40.3)
EN-GJS-400-18-LT (GGG 40.3)
PFA lined
EN-GJS-400-18-LT (GGG 40.3)
PP lined
5 CONEXO diaphragm
RFID chip
(see Conexo informa-
tion)
6 CONEXO body RFID
chip
(see Conexo informa-
tion)
7 CONEXO actuator RFID
chip
(see Conexo informa-
tion)
3.2 Description
The GEMÜ 611 / 671 2/2-way diaphragm valve has a low-
maintenance plastic actuator and is manually operated. An in-
tegrated optical position indicator is standard.
3.3 Function
The product is designed for use in piping. It controls a flowing
medium by manual operation.
3.4 Product label
The product label is located on the actuator. Product label
data (example):
Item number Traceability number Consecutive number
- XXXXXXXX|YYYY
Design in accordance with order data
Device-specific data
Year of manufacture
Item number Traceability number Consecutive number
- XXXXXXXX|YYYY
Design in accordance with order data
Device-specific data
Year of manufacture
The month of manufacture is encoded in the traceability num-
ber and can be obtained from GEMÜ. The product was manu-
factured in Germany.
The operating pressure stated on the product label applies to
a media temperature of 20 °C. The product can be used up to
the maximum stated media temperature. You can find the
pressure/temperature correlation in the technical data.

www.gemu-group.com 7 / 41 GEMÜ 611/671
4 GEMÜ CONEXO
Installing the RFID chip
In the corresponding design with CONEXO, this product has
an RFID chip (1) for electronic recognition. The position of the
RFID chip can be seen below.
5 Correct use
DANGER
Danger of explosion!
▶Risk of severe injury or death.
●Do not use the product in potentially
explosive zones.
●Only use the product in potentially ex-
plosive zones confirmed in the declara-
tion of conformity.
WARNING
Improper use of the product!
▶Risk of severe injury or death
▶Manufacturer liability and guarantee will be void
●Only use the product in accordance with the operating
conditions specified in the contract documentation and in
this document.
The product is designed for installation in piping systems and
for controlling a working medium.
1. Use the product in accordance with the technical data.
2. Note the supplement acc. to ATEX
3. Please note the flow direction on the valve body.
5 Correct use

6 Order data
The order data provide an overview of standard configurations.
Please check the availability before ordering. Other configurations available on request.
Order codes
1 Type Code
Diaphragm valve, manually operated,
plastic handwheel,
optical position indicator
611
Diaphragm valve, manually operated,
plastic handwheel,
plastic distance piece,
optical position indicator
671
2 DN Code
GEMÜ 611
DN 10 10
DN 12 12
DN 15 15
DN 20 20
GEMÜ 671
DN 15 15
DN 20 20
DN 25 25
DN 32 32
DN 40 40
DN 50 50
DN 65 65
DN 80 80
DN 100 100
3 Body configuration Code
2/2-way body D
4 Connection type Code
Spigot
Spigot DIN 0
Spigot EN 10357 series B,
formerly DIN 11850 series 1
16
Spigot EN 10357 series A / DIN 11866 series A
formerly DIN 11850 series 2
17
Spigot DIN 11850 series 3 18
Spigot JIS-G 3447 35
Spigot JIS-G 3459 schedule 10s 36
Spigot SMS 3008 37
Spigot BS 4825, part 1 55
Spigot ASME BPE/DIN 11866 series C 59
Spigot ISO 1127/EN 10357 series C/DIN 11866 series B 60
Spigot ANSI/ASME B36.19M schedule 10s 63
Spigot ANSI/ASME B36.19M schedule 5s 64
Spigot ANSI/ASME B36.19M schedule 40s 65
Threaded connection
Threaded socket DIN ISO 228 1
NPT female thread 31
Threaded spigot DIN 11851 6
4 Connection type Code
Cone spigot and union nut DIN 11851 6K
Flange
Flange EN 1092, PN 16, form B,
face-to-face dimension FTF EN 558 series 1, ISO 5752,
basic series 1,
length only for body configuration D
8
Flange ANSI Class 150 RF,
face-to-face dimension FTF MSS SP-88,
length only for body configuration D
38
Flange ANSI Class 125/150 RF,
face-to-face dimension FTF EN 558 series 1, ISO 5752,
basic series 1,
length only for body configuration D
39
Clamp
Clamp ASME BPE,
face-to-face dimension FTF ASME BPE,
length only for body configuration D
80
Clamp DIN 32676 series B,
face-to-face dimension FTF EN 558 series 7,
length only for body configuration D
82
Clamp ASME BPE,
for pipe ASME BPE,
face-to-face dimension FTF EN 558 series 7,
length only for body configuration D
88
Clamp DIN 32676 series A,
face-to-face dimension FTF acc. to EN 558 series 7,
length only for body configuration D
8A
Clamp ISO 2852 for pipe ISO 2037,
clamp SMS 3017 for pipe SMS 3008
face-to-face dimension FTF EN 558 series 7,
length only for body configuration D
8E
Clamp DIN 32676 series C,
face-to-face dimension FTF ASME BPE,
length only for body configuration D
8P
Clamp DIN 32676 series C,
face-to-face dimension FTF EN 558 series 7,
length only for body configuration D
8T
5 Valve body material Code
SG iron material
EN-GJS-400-18-LT (GGG 40.3),
PFA lined
17
EN-GJS-400-18-LT (GGG 40.3),
PP lined
18
EN-GJS-400-18-LT (GGG 40.3) 90
Investment casting material
1.4408, investment casting 37
1.4408, PFA lined 39
1.4435, investment casting C3
Forged material
1.4435 (F316L), forged body 40
1.4435 (BN2), forged body, Δ Fe < 0.5% 42
6 Order data
www.gemu-group.com8 / 41GEMÜ 611/671

5 Valve body material Code
1.4539, forged body F4
Brass
CW614N, CW617N (brass) 12
6 Diaphragm material Code
Elastomer
FKM 4
EPDM 13
EPDM 17
EPDM 19
EPDM 28
EPDM 29
EPDM 36
PTFE
PTFE/EPDM one-piece 54
PTFE/EPDM two-piece 5M
PTFE/PVDF/EPDM three-piece 71
Note: The PTFE/EPDM diaphragm (code 5M) is
available from diaphragm size 25.
Note: The PTFE/PVDF/EPDM diaphragm (code 71) can
only be combined with PFA lined valve bodies.
7 Control function Code
GEMÜ 611 and GEMÜ 671
Manually operated 0
GEMÜ 671
Manually operated,
with lockable handwheel
L
8 Actuator version Code
GEMÜ 611
Actuator size 2 2
GEMÜ 671
Actuator size 2 2
Actuator size 3 3
Actuator size 4 4
Thread for mounting of electrical position indicator
GEMÜ 1215
2Z
Thread for mounting of electrical position indicator
GEMÜ 1215
3Z
Thread for mounting of electrical position indicator
GEMÜ 1215
4Z
Thread for mounting of electrical position indicator
GEMÜ 1215
5Z
Thread for mounting of electrical position indicator
GEMÜ 1215
6Z
9 Surface Code
Ra ≤ 6.3 μm (250 μin.) for media wetted surfaces,
mechanically polished internal
1500
Ra ≤ 0.8 µm (30 µin.) for media wetted surfaces,
in accordance with DIN 11866 H3,
mechanically polished internal
1502
Ra ≤ 0.8 µm (30 µin.) for media wetted surfaces,
in accordance with DIN 11866 HE3,
electropolished internal/external
1503
9 Surface Code
Ra ≤ 0.6 μm (25 μin.) for media wetted surfaces,
mechanically polished internal
1507
Ra ≤ 0.6 µm (25 µin.) for media wetted surfaces,
electropolished internal/external
1508
Ra ≤ 0.25 µm (10 µin.) for media wetted surfaces *),
in accordance with DIN 11866 HE5,
electropolished internal/external,
*) for inner pipe diameters < 6 mm, in the spigot Ra ≤
0.38 µm
1516
Ra ≤ 0.25 μm (10 µin.) for media wetted surfaces *),
in accordance with DIN 11866 H5,
mechanically polished internal,
*) for inner pipe diameters < 6 mm, in the spigot Ra ≤
0.38 μm
1527
Ra ≤ 0.4 µm (15 µin.) for media wetted surfaces,
in accordance with DIN 11866 H4,
mechanically polished internal
1536
Ra ≤ 0.4 µm (15 µin.) for media wetted surfaces,
in accordance with DIN 11866 HE4,
electropolished internal/external
1537
Ra max. 0.51 µm (20 µin.) for media wetted surfaces,
in accordance with ASME BPE SF1,
mechanically polished internal
SF1
Ra max. 0.64 µm (25 µin.) for media wetted surfaces,
in accordance with ASME BPE SF2,
mechanically polished internal
SF2
Ra max. 0.76 µm (30 µin.) for media wetted surfaces,
in accordance with ASME BPE SF3,
mechanically polished internal
SF3
Ra max. 0.38 µm (15 µin.) for media wetted surfaces,
in accordance with ASME BPE SF4,
electropolished internal/external
SF4
Ra max. 0.51 µm (20 µin.) for media wetted surfaces,
in accordance with ASME BPE SF5,
electropolished internal/external
SF5
Ra max. 0.64 µm (25 µin.) for media wetted surfaces,
in accordance with ASME BPE SF6,
electropolished internal/external
SF6
10 Special version Code
Without
BELGAQUA certification B
Special version for oxygen,
maximum medium temperature: 60°C
S
11 CONEXO Code
Without
Integrated RFID chip for electronic identification and
traceability
C
6 Order data
www.gemu-group.com 9 / 41 GEMÜ 611/671

Order example
Ordering option Code Description
1 Type 671 Diaphragm valve, manually operated,
plastic handwheel,
plastic distance piece,
optical position indicator
2 DN 25 DN 25
3 Body configuration D 2/2-way body
4 Connection type 60 Spigot ISO 1127/EN 10357 series C/DIN 11866 series B
5 Valve body material C3 1.4435, investment casting
6 Diaphragm material 17 EPDM
7 Control function 0 Manually operated
8 Actuator version 2 Actuator size 2
9 Surface 1500 Ra ≤ 6.3 μm (250 μin.) for media wetted surfaces,
mechanically polished internal
10 Special version S Special version for oxygen,
maximum medium temperature: 60°C
11 CONEXO Without
6 Order data
www.gemu-group.com10 / 41GEMÜ 611/671

7 Technical data
7.1 Medium
Working medium: Corrosive, inert, gaseous and liquid media which have no negative impact on the physical and
chemical properties of the body and diaphragm material.
For special oxygen version (code S): only gaseous oxygen
7.2 Temperature
Media temperature: Diaphragm material Standard Special version
for oxygen
FKM (code 4) -10 — 80 °C -
EPDM (Code 13) -10 — 80 °C 0 — 60 °C
EPDM (Code 17) -10 — 80 °C -
EPDM (code 19) -10 — 80 °C 0 — 60 °C
EPDM (code 28) -10 — 80 °C -
EPDM (Code 29) -10 — 80 °C -
EPDM (Code 36) -10 — 80 °C -
PTFE/EPDM (code 54) -10 — 80 °C 0 — 60 °C
PTFE/PVDF/EPDM (code 71) -10 — 80 °C -
PTFE/EPDM (code 5M) -10 — 80 °C 0 — 60 °C
Ambient temperature: 0 — 60 °C
Storage temperature: 0 — 40 °C
7.3 Pressure
Operating pressure: MG DN Diaphragm material
Elastomer PTFE
GEMÜ 611 10 10 - 20 0 - 10 0 - 6
GEMÜ 671 25 - 100 15 - 100 0 - 10 0 - 6
MG = diaphragm size
All pressures are gauge pressures. Operating pressure values were determined with static operating pressure
applied on one side of a closed valve. Sealing at the valve seat and atmospheric sealing is ensured for the given
values.
Information on operating pressures applied on both sides and for high purity media on request.
Pressure rating: PN 16
Leakage rate: Leakage rate A to P11/P12 EN 12266-1
GEMÜ 611/671www.gemu-group.com 11 / 41
7 Technical data

Kv values: MG DN Connection type code
0 16 17 18 37 59 60
10 10 - 2.4 2.4 2.4 - 2.2 3.3
12 -------
15 3.3 3.8 3.8 3.8 - 2.2 4.0
20 - - - - - 3.8 -
25 15 4.1 4.7 4.7 4.7 - - 7.4
20 6.3 7.0 7.0 7.0 - 4.4 13.2
25 13.9 15.0 15.0 15.0 12.6 12.2 16.2
40 32 25.3 27.0 27.0 27.0 26.2 - 30.0
40 29.3 30.9 30.9 30.9 30.2 29.5 32.8
50 50 46.5 48.4 48.4 48.4 51.7 50.6 55.2
65 - - - - 62.2 61.8 -
80 65 - - 77.0 - 68.5 68.5 96.0
80 - - 111.0 - 80.0 87.0 111.0
100 100 - - 194.0 - 173.0 188.0 214.0
MG = diaphragm size
Kv values in m³/h
Kv values determined in accordance with DIN EN 60534 standard, inlet pressure 5 bar, Δp 1 bar, stainless steel
valve body and soft elastomer diaphragm. The Kv values for other product configurations (e.g. other diaphragm
or body materials) may differ. In general, all diaphragms are subject to the influences of pressure, temperature,
the process and their tightening torques. Therefore the Kv values may exceed the tolerance limits of the stand-
ard.
MG DN SG iron 40.3
connection type 1,
31
PFA / PP Investment cast-
ing
connection type 1,
31
25 15 8.0 5.0 6.5
20 11.5 9.0 10.0
25 11.5 13.0 14.0
40 32 28.0 23.0 26.0
40 28.0 26.0 33.0
50 50 60.0 47.0 60.0
MG = diaphragm size, Kv values in m³/h
Kv values determined in accordance with DIN EN 60534, inlet pressure 5 bar, Δp 1 bar, with connection flange
EN 1092 length EN 558 series 1 (or threaded socket DIN ISO 228 for body material GGG40.3) and soft elastomer
diaphragm. The Kv values for other product configurations (e.g. other diaphragm or body materials) may differ.
In general, all diaphragms are subject to the influences of pressure, temperature, the process and their tighten-
ing torques. Therefore the Kv values may exceed the tolerance limits of the standard.
The Kv value curve (Kv value dependent on valve stroke) can vary depending on the diaphragm material and dur-
ation of use.
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7 Technical data

7.4 Product conformity
Machinery Directive: 2006/42/EC
Pressure Equipment Dir-
ective:
2014/68/EU
Food: Regulation (EC) No. 1935/2006
Regulation (EC) No. 10/2011*
FDA*
USP* Class VI
Drinking water: Belgaqua*
* depending on version and / or operating parameters
7.5 Mechanical data
Weight: GEMÜ 611 actuator
0.15 kg
GEMÜ 671 actuator
MG DN Weight
25 15 – 25 0.4
40 32 – 40 0.6
50 50 – 65 1.0
80 65 – 80 3.8
100 100 5.1
Weights in kg
MG = diaphragm size
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7 Technical data

Weight: Body
MG DN Spigot Threaded
socket
Threaded
spigot, cone
spigot
Flange Clamp
Connection type code
0, 16, 17, 18,
35, 36, 37,
55, 59, 60,
63, 64, 65
1, 31 6, 6K 8, 38, 39 80, 82, 88,
8A , 8E, 8P,
8T
10 10 0.30 - 0.33 - 0.30
12 - 0.17 - - -
15 0.30 0.26 0.35 - 0.43
20 0.30 - - - 0.43
25 15 0.62 0.32 0.71 1.85 0.75
20 0.58 0.34 0.78 2.35 0.71
25 0.55 0.39 0.79 2.85 0.63
40 32 1.45 0.88 1.66 4.90 1.62
40 1.32 0.93 1.62 5.65 1.50
50 50 2.25 1.56 2.70 7.45 2.50
65 2.20 - - - 2.30
80 65 8.60 - 9.22 10.20 8.90
80 8.00 - 9.20 14.20 8.50
100 100 24.10 - - 21.00 24.80
Weights in kg
MG = diaphragm size
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7 Technical data

8 Dimensions
8.1 Actuator dimensions
8.1.1 GEMÜ 611
CT*
ØB
A
MG DN A ØB
10 10 - 20 80.0 60.0
Dimensions in mm
MG = diaphragm size
* CT = A + H1 (see body dimensions)
8.1.2 GEMÜ 671
ØB
A
CT*
A2
M
ØB
CT*
A
X*
Special version - Accessory Code Z
MG DN ØB A A2 M X*
25 15 - 25 90.0 79.0 20.0 M16x1 14.0
40 32 - 40 114.0 99.0 24.0 M16x1 14.0
50 50 - 65 140.0 119.0 28.0 M16x1 8.0
80 65 - 80 214.0 167.0 42.0 M16x1 17.0
100 100 214.0 216.0 58.0 M16x1 25.0
Dimensions in mm
MG = diaphragm size
* CT = A + H1 (see body dimensions)
* only for control function code L
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8 Dimensions

8.2 Body dimensions
8.2.1 Spigot DIN/EN/ISO (code 0, 16, 17, 18, 60)
L
c
ød
s
H1
Connection type spigot DIN/EN/ISO (code 0, 16, 17, 18, 60) 1), forged material (code 40, 42, F4) 2)
MG DN NPS c
(min)
ød H1 L s
Connection type Connection type
0 16 17 18 60 0 16 17 18 60
GEMÜ
611
10 10 3/8" 25.0 - 12.0 13.0 14.0 17.2 12.5 108.0 - 1.0 1.5 2.0 1.6
15 1/2" 25.0 18.0 18.0 19.0 20.0 21.3 12.5 108.0 1.5 1.0 1.5 2.0 1.6
GEMÜ
671
25 15 1/2" 25.0 18.0 18.0 19.0 20.0 21.3 19.0 120.0 1.5 1.0 1.5 2.0 1.6
20 3/4" 25.0 22.0 22.0 23.0 24.0 26.9 19.0 120.0 1.5 1.0 1.5 2.0 1.6
25 1" 25.0 28.0 28.0 29.0 30.0 33.7 19.0 120.0 1.5 1.0 1.5 2.0 2.0
40 32 1¼" 25.0 34.0 34.0 35.0 36.0 42.4 26.0 153.0 1.5 1.0 1.5 2.0 2.0
40 1½" 25.0 40.0 40.0 41.0 42.0 48.3 26.0 153.0 1.5 1.0 1.5 2.0 2.0
50 50 2" 30.0 52.0 52.0 53.0 54.0 60.3 32.0 173.0 1.5 1.0 1.5 2.0 2.0
80 65 2½" 30.0 - - 70.0 - 76.1 62.0 216.0 - - 2.0 - 2.0
80 3" 30.0 - - 85.0 - 88.9 62.0 254.0 - - 2.0 - 2.3
100 100 4" 30.0 - - 104.0 - 114.3 76.0 305.0 - - 2.0 - 2.3
Dimensions in mm
MG = diaphragm size
1) Connection type
Code 0: Spigot DIN
Code 16: Spigot EN 10357 series B, formerly DIN 11850 series 1
Code 17: Spigot EN 10357 series A / DIN 11866 series A formerly DIN 11850 series 2
Code 18: Spigot DIN 11850 series 3
Code 60: Spigot ISO 1127/EN 10357 series C/DIN 11866 series B
2) Valve body material
Code 40: 1.4435 (F316L), forged body
Code 42: 1.4435 (BN2), forged body, Δ Fe < 0.5%
Code F4: 1.4539, forged body
www.gemu-group.com16 / 41GEMÜ 611/671
8 Dimensions

L
c
ød
s
H1
Connection type spigot DIN/EN/ISO (code 17, 60) 1), investment casting material (code C3) 2)
MG DN NPS c (min) ød H1 L s
Connection type Connection type
17 60 17 60
GEMÜ
611
10 10 3/8" 25.0 13.0 17.2 12.5 108.0 1.5 1.6
15 1/2" 25.0 19.0 21.3 12.5 108.0 1.5 1.6
GEMÜ
671
25 15 1/2" 25.0 19.0 21.3 13.0 120.0 1.5 1.6
20 3/4" 25.0 23.0 26.9 16.0 120.0 1.5 1.6
25 1" 25.0 29.0 33.7 19.0 120.0 1.5 2.0
40 32 1¼" 25.0 35.0 42.4 24.0 153.0 1.5 2.0
40 1½" 25.0 41.0 48.3 26.0 153.0 1.5 2.0
50 50 2" 30.0 53.0 60.3 32.0 173.0 1.5 2.0
Dimensions in mm
MG = diaphragm size
1) Connection type
Code 17: Spigot EN 10357 series A / DIN 11866 series A formerly DIN 11850 series 2
Code 60: Spigot ISO 1127/EN 10357 series C/DIN 11866 series B
2) Valve body material
Code C3: 1.4435, investment casting
GEMÜ 611/671www.gemu-group.com 17 / 41
8 Dimensions

8.2.2 Spigot ASME/BS (code 55, 59, 63, 64, 65)
L
c
ød
s
H1
Connection type spigot ASME/BS (code 55, 59, 63, 64, 65) 1), forged material (code 40, 42, F4) 2)
MG DN NPS c
(min)
ød H1 L s
Connection type Connection type
55 59 63 64 65 55 59 63 64 65
GEMÜ
611
10 10 3/8" 25.0 9.53 9.53 17.1 - 17.1 12.5 108.0 1.2 0.89 1.65 - 2.31
15 1/2" 25.0 12.70 12.70 21.3 21.3 21.3 12.5 108.0 1.2 1.65 2.11 1.65 2.77
20 3/4" 25.0 19.05 19.05 - - - 12.5 108.0 1.2 1.65 - - -
GEMÜ
671
25 15 1/2" 25.0 - - 21.3 21.3 21.3 19.0 120.0 - - 2.11 1.65 2.77
20 3/4" 25.0 19.05 19.05 26.7 26.7 26.7 19.0 120.0 1.2 1.65 2.11 1.65 2.87
25 1" 25.0 - 25.40 33.4 33.4 33.4 19.0 120.0 - 1.65 2.77 1.65 3.38
40 32 1¼" 25.0 - - 42.2 42.2 42.2 26.0 153.0 - - 2.77 1.65 3.56
40 1½" 25.0 - 38.10 48.3 48.3 48.3 26.0 153.0 - 1.65 2.77 1.65 3.68
50 50 2" 30.0 - 50.80 60.3 60.3 60.3 32.0 173.0 - 1.65 2.77 1.65 3.91
65 2½" 30.0 - 63.50 - - - 34.0 173.0 - 1.65 - - -
80 65 2½" 30.0 - 63.50 73.0 73.0 73.0 62.0 216.0 - 1.65 3.05 2.11 5.16
80 3" 30.0 - 76.20 88.9 88.9 88.9 62.0 254.0 - 1.65 3.05 2.11 5.49
100 100 4" 30.0 - 101.60 114.3 114.3 114.3 76.0 305.0 - 2.11 3.05 2.11 6.02
Dimensions in mm
MG = diaphragm size
1) Connection type
Code 55: Spigot BS 4825, part 1
Code 59: Spigot ASME BPE/DIN 11866 series C
Code 63: Spigot ANSI/ASME B36.19M schedule 10s
Code 64: Spigot ANSI/ASME B36.19M schedule 5s
Code 65: Spigot ANSI/ASME B36.19M schedule 40s
2) Valve body material
Code 40: 1.4435 (F316L), forged body
Code 42: 1.4435 (BN2), forged body, Δ Fe < 0.5%
Code F4: 1.4539, forged body
www.gemu-group.com18 / 41GEMÜ 611/671
8 Dimensions

L
c
ød
s
H1
Connection type spigot ASME BPE (code 59) 1), investment casting material (code C3) 2)
MG DN NPS c (min) ød H1 L s
GEMÜ 611 10 20 3/4" 25.0 19.05 12.5 108.0 1.65
GEMÜ 671 25 20 3/4" 25.0 19.05 16.0 120.0 1.65
25 1" 25.0 25.40 19.0 120.0 1.65
40 40 1½" 25.0 38.10 26.0 153.0 1.65
50 50 2" 30.0 50.80 32.0 173.0 1.65
Dimensions in mm
MG = diaphragm size
1) Connection type
Code 59: Spigot ASME BPE/DIN 11866 series C
2) Valve body material
Code C3: 1.4435, investment casting
GEMÜ 611/671www.gemu-group.com 19 / 41
8 Dimensions

8.2.3 Spigot JIS/SMS (code 35, 36, 37)
L
c
ød
s
H1
Connection type spigot JIS/SMS (code 35, 36, 37) 1), forged material (code 40, 42, F4) 2)
MG DN NPS c (min) ød H1 L s
Connection type Connection type
35 36 37 35 36 37
GEMÜ
611
10 10 3/8" 25.0 - 17.3 - 12.5 108.0 - 1.65 -
15 1/2" 25.0 - 21.7 - 12.5 108.0 - 2.10 -
GEMÜ
671
25 15 1/2" 25.0 - 21.7 - 19.0 120.0 - 2.10 -
20 3/4" 25.0 - 27.2 - 19.0 120.0 - 2.10 -
25 1" 25.0 25.4 34.0 25.0 19.0 120.0 1.2 2.80 1.2
40 32 1¼" 25.0 31.8 42.7 33.7 26.0 153.0 1.2 2.80 1.2
40 1½" 25.0 38.1 48.6 38.0 26.0 153.0 1.2 2.80 1.2
50 50 2" 30.0 50.8 60.5 51.0 32.0 173.0 1.5 2.80 1.2
65 2½" 30.0 63.5 - 63.5 34.0 173.0 2.0 - 1.6
80 65 2½" 30.0 63.5 76.3 63.5 62.0 216.0 2.0 3.00 1.6
80 3" 30.0 76.3 89.1 76.1 62.0 254.0 2.0 3.00 1.6
100 100 4" 30.0 101.6 114.3 101.6 76.0 305.0 2.0 3.00 2.0
Connection type spigot SMS (code 37), investment casting material (code C3) 2)
MG DN NPS c (min) ød H1 L s
GEMÜ
671
25 25 1" 25.0 25.0 19.0 120.0 1.2
40 40 1½" 25.0 38.0 26.0 153.0 1.2
50 50 2" 30.0 51.0 32.0 173.0 1.2
Dimensions in mm
MG = diaphragm size
1) Connection type
Code 35: Spigot JIS-G 3447
Code 36: Spigot JIS-G 3459 schedule 10s
Code 37: Spigot SMS 3008
2) Valve body material
Code 40: 1.4435 (F316L), forged body
Code 42: 1.4435 (BN2), forged body, Δ Fe < 0.5%
Code C3: 1.4435, investment casting
Code F4: 1.4539, forged body
www.gemu-group.com20 / 41GEMÜ 611/671
8 Dimensions