Hygienic process connections

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Hygienic process connections

• Dairy connection acc. to DIN 11851
• Aseptic connection acc. to DIN 11864
• Aseptic connection NEUMO
• BioConnect- NEUMO
• SMS-Connection
• Clamp connection acc. To ISO2852
• Tri Clamp-connection
• Varivent- connections
• APV-c connections
• DRD- welding adapter for vessels
• Process connection DN 25 Ingold
• Installation recommendation

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Dairy process connection DIN 11851
Different parts of the dairy connection DIN
11851 from left to right nut, threat
part, conical part, seal
Annotation The dairy connection acc. to DIN
11851 is, in Europe, the most used screws in food
and beverage Industry. It can be used as well to
connect to a vessel either than to a pipe. Beside
the outstanding price, the robust equipment is
the biggest advantage. The hygienic conditions in
this connection are, due to the big, undefined
sealing, not the best. The sensor cant be
mounted complete flush to the process.
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Dairy process connection DIN 11851
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Aseptic connection acc. to DIN 11864
Annotation The announced successor of the 11851
is the 11864 connection. Here we find a defined
load and a very small surface of the sealing to
the process. The DIN 11864 follows the
engineering rules of EHEDG (European Hygienic
Equipment Design Group). Unfortunately, no unique
standard has developed so far. 2 different
versions are described Form A is a construction
using an O-Ring seal. Form B is using a special
formed sealing.
Example aseptic connection acc. to DIN 11864 A
(Photo Stericom / GEA)
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Aseptic connection acc. to DIN 11864
Example, aseptic connection acc. to DIN 11864
(Photo Stericom von GEA - Version A) Advantage
of this sealing concept is the standard O-ring.
It is easy and cheap to purchase. Disadvantage of
the O-ring is his susceptibility against vacuum.
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Aseptic connection acc. to DIN 11864
Series 2 - sealing version A, flange
Series 1 - sealing version A, screwed
We also have to differentiate between flange and
screwed connection. For both versions, two series
each exist. Series 1 is the screwed, series 2 is
defined as the flange version. The sealing is
equal for both.
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Aseptic connection acc. to DIN 11864
Series 1 - sealing version B
The version B is also built in 2 series, one with
screwed connection (version 1) and one with
flange (version 2). The sealing is guided in a
defined room. There is no problem with vacuum,
but the purchase and asset management boroughs
more expenses and efforts. Because of the big
installed base of the DIN 11851 and the fact,
that there are several connections built to full
fill DIN 11864, this new standard could not
prevail so far.
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Aseptic connection - Neumo
Annotation This connection is one Neumo approach
for hygienic connections. It follows the aim of
the DIN 11864. The defined load of the small
sealing in a defined and completely filled room
prevents the sealing from being stressed during
installation, and from breathing while
temperature changes. Disadvantage are the small
and sensitive edges that easily can be damaged
while handling. The sealing is realised by a
standard O-ring.
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BioConnect - NEUMO
Annotation The BioConnect was especially
prepared for hygienic use in the Pharmaceutical
Industry. It follows the same argumentation then
the Neumo Aseptic Connection.
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Process connection SMS
Annotation The SMS process connection is mostly
used in Scandinavia and France. Sensors can be
connected neither to pipes or vessels. Advantage
is the robust construction and the low price of
this equipment. Disadvantage is the big sealing
with all the resulting hygienic problems
SMS-connection
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Process connection SMS
Threat, nut, sealing
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ISO 2852 - Clamp-connection
Annotation The clamp connection is as well used
in food as in the pharmaceutical industry. It is
the standard connection in USA/ NAFTA countries
(Tri Clamp). The clamp is used for connections to
pipes and to vessels ISO Clamps are standardised
connections for ISO pipes. In the ISO world,
there are also clamps following DIN 32676. They
are used for pipes following DIN 11850. The
clamp connection is sealed by a flat form
sealing. The load to this seal is created at all
points by the clamp even. The seal is stressed
less than in a DIN11851connection, but it is more
complicated to install.
ISO-CLAMP-Process connection
Parts of the clamp-connection 2 x clamp-welding
parts, clamp, sealing
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TRI-CLAMP-connections
Annotation Beside the clamp connections for the
DIN/ISO-world, mostly for USA/NAFTA, the company
TRI Clover is preparing the TRI-CLAMP -
connection. The extend is just close to the ISO
clamps. Beside the soft plastic sealing, for
TRI-CLAMP-connections there is also sealing
available made from peek. This sealing ease the
installation of the connection, because it sticks
on the clamp part.
TRI-CLAMP-Prozessanschluss
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Varivent-Inline-housing
Annotation The Varivent-Inline housing is used
to install instruments in pipes. We achieve a
good flush mounted installation. The instrument
is mounted direct in the flow. Because of the
con-struction, there is no pressure loss in the
housing. The design ease CIP cleaning. The
connection is sealed by a standard O-ring. The
fastening is realised with a clamp. This might
result in a bad surprise, if the clamp is opened
while there is some pressure left on the process.
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Varivent-Inline-housing
Special topic for the Gea Inline-housing is, that
3 types cover all pipe diameters from DN 10 to DN
162. They are defined like follows Varivent
Typ 1 fits for diameters DN 10 and DN
15 Varivent Typ 2 fits just for diameter DN
25 Varivent Typ 3 fits for diameters from DN 40
up to DN 162 This results in optimised asset
management, as well for the instruments as for
the spare parts.
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Varivent-Tank-Adapter
Annotation Beside the inline housing, there is
also a Varivent- Vessel welding adapter.
Advantage is, that instruments can be used for
both. The version U allows the installation also
in tight circumstances like in cone areas.
Because of its slight construction it is harder
to weld the adapter to the vessel without
damaging it. The T version needs much more space
for installation.
Tank-Adapter Version - U -
Tank-Adapter Version - T -
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Varivent-Family
Example the complete family of Varivent-process
connections
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APV-Inline-housing
Annotation The APV inline housing is according
to the connection to the process, quite similar
to the Varivent- housing. It delivers the same
advantages. The flange is fixed with 4 screws.
The sealing is realised with a form sealing. A
good flush mounted process connection is
reached. Two instruments can be placed in both
inline housings.
APV-Inline- housing
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APV-connection
Annotation Also APV offers the possibility to
use the same instrument in an inline housing or a
tank welded adapter. Because of its big diameter
it mainly is used in cylindrical part of
vessels. Here also, the asset management is
supported by interchangeability of the sealing
and flange.
APV-welding adapter
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DRD-welding adapter for vessels
Annotation The DRD adapter is prepared to
connect instruments to vessel. A good flush
mounted integration is reached. The sealing is
realised by a common flat sealing. The instrument
is fixed by 4 screws. This decreases the risk
while opening the flange, even if there is still
pressure on the process. The DRD flange is well
used in food industry. His disadvantage is the
big diameter of 125mm, witch might prevent the
use in the conical part of a tank.
Deltapilot S with DRD-flange
DRD-welding adapter
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Process connection Ingold DN 25
Annotation The Ingold connection DN 25 is
mostly used in the pharmaceutical industry. It is
the standard connection in fermenting vessels.
Welding adapter DN 25 with nut and level switch
Liquiphant M
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Process connection Ingold DN 25
Pressure sensor Cerabar M PMP 45
Level switch Liquiphant M