GEM 660 User manual

GEMÜ 660
Pneumatically operated diaphragm valve
Operating instructions
EN
TYPE EL
CLASS I
AUGUST 2021
further information
webcode: GW-660

All rights including copyrights or industrial property rights are expressly reserved.
Keep the document for future reference.
© GEMÜ Gebr. Müller Apparatebau GmbH & Co. KG
28.04.2023
www.gemu-group.com2 / 35GEMÜ 660

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 .................................................... 6
5 Correct use .......................................................... 6
6 Order data ........................................................... 7
6.1 Order codes ................................................... 7
6.2 Order example ............................................... 8
7 Technical data ..................................................... 9
8 Dimensions .......................................................... 13
8.1 Actuator dimensions ..................................... 13
8.2 Body dimensions ........................................... 14
9 Manufacturer's information .................................. 22
9.1 Packaging ...................................................... 22
9.2 Transport ....................................................... 22
9.3 Storage ........................................................... 22
9.4 Delivery .......................................................... 22
10 Installation in piping ............................................ 22
10.1 Preparing for installation .............................. 22
10.2 Installation position ....................................... 22
10.3 Installation with butt weld spigots ............... 23
10.4 Installation with clamp connections ............ 23
10.5 Installation with threaded spigots ................ 23
10.6 After the installation ...................................... 23
10.7 Operation ....................................................... 23
10.8 Setting the seal adjuster and the stroke lim-
iter .................................................................. 24
11 Pneumatic connections ....................................... 26
11.1 Control function ............................................. 26
11.2 Connecting the control medium ................... 26
12 Commissioning .................................................... 27
13 Operation ............................................................. 27
14 Troubleshooting .................................................. 28
15 Inspection and maintenance ................................ 29
15.1 Spare parts .................................................... 29
15.2 Fitting/removing spare parts ........................ 29
16 Removal from piping ............................................ 33
17 Disposal .............................................................. 33
18 Returns ................................................................ 33
19 EU Declaration of Incorporation according to the
EC Machinery Directive 2006/42/EC, Annex II B ... 34
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www.gemu-group.com4 / 35GEMÜ 660
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.
Control function
The possible actuation functions of the GEMÜ product.
Control medium
The medium whose increasing or decreasing pressure causes
the GEMÜ product to be actuated and operated.
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!

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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
1
3
4
5
6
7
2
8
Item Name Materials
1 Position indicator
2 Control air connectors
3 Diaphragm EPDM
PTFE/EPDM (one-piece)
4 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
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)
8 Pneumatic actuator Stainless steel
3 Product description

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4 GEMÜ CONEXO
3.2 Description
The GEMÜ 660 2/2-way diaphragm valve has a stainless steel
piston actuator and is pneumatically operated. The valve was
designed for dosing and filling a wide range of products. All
actuator parts are made from stainless steel (except seals).
Normally Closed (NC), Normally Open (NO) and Double Acting
(DA) control functions are available. An opening stroke and
closing stroke limiter and an optical position indicator are in-
tegrated as standard.
3.3 Function
The product is designed for use in piping. It can be closed or
opened by a control medium, which is how it controls the
flow.
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
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.
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.

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, pneumatically operated,
stainless steel piston actuator,
stroke limiter and seal adjuster
660
2 DN Code
DN 4 4
DN 6 6
DN 8 8
DN 10 10
DN 12 12
DN 15 15
DN 20 20
DN 25 25
3 Body configuration Code
Tank bottom valve body B
Body configuration code B: Dimensions and designs on
request
2/2-way body D
T body T
Body configuration code T: Dimensions on request
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
Threaded spigot DIN 11851 6
Cone spigot and union nut DIN 11851 6K
Clamp
Clamp ASME BPE,
face-to-face dimension FTF ASME BPE,
length only for body configuration D
80
4 Connection type Code
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
Investment casting material
1.4408, investment casting 37
1.4435, investment casting C3
Forged material
1.4435 (F316L), forged body 40
1.4435 (BN2), forged body, Δ Fe < 0.5% 42
1.4539, forged body F4
6 Diaphragm material Code
Elastomer
EPDM 3A
EPDM 13
PTFE
PTFE/EPDM one-piece 54
7 Control function Code
Normally closed (NC) 1
Normally open (NO) 2
Double acting (DA) 3
8 Actuator version Code
Control air connector 90° offset to the flow direction,
piston diameter 32 mm (standard)
0R1
Control air connector in flow direction (standard),
piston diameter 32 mm (standard)
0T1
Actuator size 1T1 1T1
Actuator version 1R1 1R1
Actuator size 2T1 2T1
Actuator size 2R1 2R1
6 Order data
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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
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
9 Surface Code
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
Special version for 3A M
Special version for oxygen,
maximum medium temperature: 60°C
S
11 CONEXO Code
Without
Integrated RFID chip for electronic identification and
traceability
C
Order example
Ordering option Code Description
1 Type 660 Diaphragm valve, pneumatically operated,
stainless steel piston actuator,
stroke limiter and seal adjuster
2 DN 15 DN 15
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 40 1.4435 (F316L), forged body
6 Diaphragm material 54 PTFE/EPDM one-piece
7 Control function 1 Normally closed (NC)
8 Actuator version 2T1 Actuator size 2T1
9 Surface 1503 Ra ≤ 0.8 µm (30 µin.) for media wetted surfaces,
in accordance with DIN 11866 HE3,
electropolished internal/external
10 Special version Without
11 CONEXO Without
6 Order data
www.gemu-group.com8 / 35GEMÜ 660

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.
The valve will seal in both flow directions up to full operating pressure (gauge pressure).
For special oxygen version (code S): only gaseous oxygen
Control medium: Inert gases
7.2 Temperature
Media temperature: Drinks filling -10 — 85 °C
Other applications -10 — 100 °C
Diaphragm material Standard Special version
for oxygen
EPDM (code 13) -10 — 100 °C 0 — 60 °C
PTFE/EPDM (code 54) -10 — 100 °C 0 — 60 °C
EPDM (code 3A) -10 — 100 °C 0 — 60 °C
Sterilization temperature: EPDM (code 13) max. 150 °C, max. 60 min per cycle
PTFE/EPDM (code 54) max. 150 °C, permanent temperature per cycle
EPDM (code 3A) max. 150 °C, max. 60 min per cycle
The sterilization temperature is only valid for steam (saturated steam) or superheated water.
If the sterilization temperatures listed above are applied to the EPDM diaphragms for longer periods of time, the
service life of the diaphragms will be reduced. In these cases, maintenance cycles must be adapted accord-
ingly.
PTFE diaphragms can also be used as moisture barriers; however, this will reduce their service life. This also ap-
plies to PTFE diaphragms exposed to high temperature fluctuations. The maintenance cycles must be adapted
accordingly. GEMÜ 555 and 505 globe valves are particularly suitable for use in the area of steam generation
and distribution. The following valve arrangement for interfaces between steam pipes and process pipes has
proven itself over time: A globe valve for shutting off steam pipes and a diaphragm valve as an interface to the
process pipes.
Steam input
Process pipe
Steam distribution Sterile process
Ambient temperature: 0 — 60 °C
Control medium temper-
ature:
0 — 60 °C
Storage temperature: 0 — 40 °C
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7 Technical data

7.3 Pressure
Operating pressure: MG DN Actuator version
(code)
Diaphragm material
EPDM PTFE
8 4 - 15 0T1, 0R1 0 - 5 0 - 5
10 10 - 20 1T1, 1R1 0 - 5 0 - 5
25 15 - 25 2T1, 2R1 0 - 5 0 - 5
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.
Observe control pressure / operating pressure diagram
Pressure rating: PN 16
Leakage rate: Leakage rate A to P11/P12 EN 12266-1
Control pressure: MG DN Actuator version
(code)
Control function
1
Control function
2 + 3
8 4 - 15 0T1, 0R1 5.0 - 7.0 max. 5.5
10 10 - 20 1T1, 1R1 5.0 - 7.0 max. 7.0
25 15 - 25 2T1, 2R1 4.0 - 7.0 max. 7.0
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.
Control pressure/operat-
ing pressure diagram: Control function 2 Control function 3
0
1
2
4
5
6
12345
Steuerdruck-Betriebsdruck Kennlinie Typ 660 STF 2
MG8
MG10
MG25
3
0
Control pressure [bar]
Operating pressure [bar]
6.0
5.0
4.0
3.0
2.0
1.0
5.0
4.0
3.0
2.0
1.0
0
0
0,5
1
1,5
2
2,5
3
3,5
4
4,5
5
0 1 2 3 4 5
Steuerdruck-Betriebsdruck Kennlinie Typ 660 STF 3
MG8
MG10
MG25
Control pressure [bar]
Operating pressure [bar]
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
05.0
4.03.0
2.0
1.0
0
The control pressure depending on the prevailing operating pressure, as shown in the diagram, is
intended as a guide for operating the system with low wear on the diaphragm.
Filling volume: Actuator version (code) Control function 1 Control function 2 + 3
0T1, 0R1 0.007 0.006
1T2, 1R1 0.021 0.010
2T1, 2R1 0.060 0.038
Filling volume in dm³
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7 Technical data