Yearbook 2013/2014 - ehedg

172 EHEDG Subgroups
EHEDG Subgroup
“Pumps, Homogenisers and Dampening Devices”
Ralf Stahlkopf, e-mail:ralf.stahlkopf@gea.com
For the last four years the Subgroup has worked on the 3rd
revised edition of the EHEDG Guideline and will be finished
in spring 2013.
• Doc. 17 “Hygienic Design of Pumps, Homogenisers
and Dampening Devices”
The revised edition is scheduled to be published in 2012.
The objective of this Guideline is to provide a set of minimum
requirements for pumps, homogenisers and dampening
devices for hygienic and aseptic applications, to ensure that
food products are processed hygienically and safely.
These requirements will apply to all pumps intended for
use in food processing, including centrifugal pumps, piston
pumps, lobe rotor pumps, peristaltic pumps, diaphragm
pumps, water ring pumps, progressive cavity pumps, screw
pumps, and gear pumps and also to homogenisers and
dampening devices. It will include any valves integral with
the pump head and the complete homogeniser head.
A classification of the pumps discussed is provided together
with illustrations and pictures to explain graphically the
issues, problems (such as gabs and dead-ends) and their
solutions.
Chairman:
Ralf Stahlkopf
GEA Tuchenhagen GmbH
Am Industriepark 2-10
21514 Büchen
Germany
Phone +49 4155 49 25 78
Fax +49 4155 48 27 76
E-mail: ralf.stahlkopf@geagroup.com
EHEDG Subgroup “Seals”
Dr. Till Riehm, e-mail: till.riehm@fst.com
The Guideline “Seals” covers all aspects of seals and
seal design relevant to the construction of hygienic
equipment for food processing and packaging. It details
both the European and international regulations currently
applicable to elastomeric seals used in the food and
beverage industry. It then discusses the general design
principles which have to be taken into consideration when
designing a sealing point and it includes a practical guide
on failure analysis.
In conjunction with the Sub-Group “Materials of
Construction” (Doc. 32) it was decided that “Materials of
Construction” should describe the properties of elastomers,
leaving the Guideline Seals to recommend basic seal
design principles and to discuss which parameters have to
be taken into consideration according to the surrounding
conditions.
The Guideline “Seals” therefore identifies both the relevant
legislation and the most critical design parameters and then
gives hands-on advice for the construction and design of
such components.
Chairman:
Dr. Till Riehm
Freudenberg Process Seals GmbH & Co. KG
Lorscher Str. 13
69469 Weinheim
Germany
Phone: +49 6201 80 89 19 00
Fax: +49 6201 88 89 19 69
E-mail: till.riehm@freudenberg-ds.com