�ǳ�web Analytical Valve Cleaning Specification

Rob �ǳ�web — Thu, 04 Oct 2012 15:08:58 +0000

Category:

Specification ES-3.43
The purpose of this document is to describe the materials and methods �ǳ�web uses to clean electronic valves (EC, ET, EV and EW Series) intended for use in analytical environments.

General
•   Valves are designed with reduced leak paths.
•    Parts are cleaned, assembled and tested in an enclosed room (“Controlled Area”) that is kept under positive pressure with HEPA filtered air.
        (Seals are cleaned and out-gassed in a separate area.)
•   Access to Controlled Area is restricted to trained �ǳ�web personnel.
•   Gloves are used to handle all cleaned parts.
•   All assembly tools and test equipment are designed and cleaned to avoid contamination of product.

Cleaning
•   All parts are cleaned to normal production standards before being brought into the Controlled Area.
•   Seals are cleaned ultrasonically with high purity alcohol, then heated to outgas.
•   Non-elastomeric parts are ultrasonically cleaned in a heated aqueous cleaning solution for at least 10 minutes.
•   Parts are rinsed in purified water, then dried with heat and/or forced (ambient) air or compressed nitrogen.

Post-Cleaning Inspection
• Cleaned parts are inspected under white and ultraviolet light to insure the absence of particulate and hydrocarbon contamination.
• After inspection, parts are either assembled immediately, or bagged and labeled as clean for later assembly.

Lubrication
• Components are lubricated with isopropyl alcohol, only as needed for assembly.

Assembly/Testing
•   All assembly tools and test equipment are designed and cleaned to avoid contamination of product.
•   Assembled valves are tested using compressed Nitrogen.
•   Valves are pressure decay leak tested.

Packaging & Identification
• Finished valves are double bagged in heat sealed polyethylene bags and labeled “Analytically Clean.”

Usage Notes
•   Valves should remain in their sealed bags until ready for assembly.
•   Care must be taken to avoid contaminating parts during assembly.
•   �ǳ�web reserves the right to change this specification without notice.
•   Purchaser assumes complete and total responsibility and liability for any and all penalties, remedies, or any other form of claim arising from the installation and/or use of this product.
•   The extent of �ǳ�web’s liability shall not exceed the cost of the actual part and/or part replacement as stated in �ǳ�web’s standard terms and condition of sale.

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�ǳ�web Analytical Valve Cleaning Specification