Keofitt W9, Руководство пользователя, Страница: 7 / 50

KEOFITT W9 USER MANUAL V.4 PAGE 7
1. PRESENTATION
The Keofitt W9™ sampling valve can be readily cleaned and disinfected/sterilised as it meets both
hygienic and process design requirements. Effective cleaning and disinfection/sterilisation of the
sampling valve can be carried out between random samples independently of the course of the
production process without compromising the same. The coaxial design and the electro polished valve
interior ensure absolute cleanability and sterilisability.
The W9™ valve is 3-A authorised and EHEDG Type EL Class I certified. The American 3-A Sanitary
Standard is normative for the component’s ease of cleaning and sterilisation and ensures optimum
conditions for food products, which comes in contact with the component in question. The European
EHEDG Type EL certificate is issued based on the cleanability of the valve and the test method is an
indicator of good inherent hygienic equipment design.
Keofitt valves are used in a wide range of processing industries, such as breweries, dairies, juice/soft
drinks and the biotechnological and pharmaceutical industries.
1.1 Definition of terms
In order to ease the reading of this manual and to avoid any misunderstanding, please refer to the
definition of terms in the table below:
TERM DEFINITION
3-A Sanitary Standard 3-A SSI is an independent, not-for-profit US corporation dedicated
to advancing hygienic equipment design for the food, beverage and
pharmaceutical industries.
Acids An acid is a chemical substance whose aqueous solutions are characterized
by a sour taste and the ability to react with bases and certain metals (like
calcium) to form salts. Aqueous solutions of acids have a pH of less than
7. A lower pH means a higher acidity, and thus a higher concentration of
positive hydrogen ions in the solution. Removes limestone and most mineral
deposits.
Alkali Alkalis are all bases, which form hydroxide ions (OH-) when dissolved in
water. The terms “base” and “alkali” are often used interchangeably. Alkalis
have a pH value above 7. Alkalis dissolves fat and oil, destroys protein and
attacks light metal.
Aseptic sampling The process of withdrawing a sample from the production equipment
through a closed circuit, which has been sterilised and kept sterile with no
exposure to the ambient during the sampling process.
Bioload See Microbial load.
Bioburden See Microbial load.
Chemical Sterilant A few disinfectants will kill spores with prolonged exposure times (3–12
hours); these are called chemical sterilants.
Chlorine Chlorine is a chemical element with symbol Cl and atomic number 17. It
belongs to the halogen group together with for instance iodine. It is a strong
oxidizing agent and reacts with many substances. These properties make
chlorine compounds efficient disinfectants.
CIP Abbreviation of Clean-In-Place. The process of cleaning a process component
(like a sampling valve) without removing it from the production line.
Cleaning Removal, usually with detergent and water or enzyme cleaner and water, of
adherent visible soil on a surface.
Complexing agent A substance capable of forming a complex compound with another material
in solution. Improves the cleaning properties of a detergent.