EN 922:1994
(Main)Plastics piping and ducting systems - Pipes and fittings of unplasticized poly(vinyl chloride) (PVC-U) - Specimen preparation for determination of the viscosity number and calculation of the K-value
Plastics piping and ducting systems - Pipes and fittings of unplasticized poly(vinyl chloride) (PVC-U) - Specimen preparation for determination of the viscosity number and calculation of the K-value
This Standard specifies a method for determining the viscosity number and K-value of a PVC-resin derived from a pipe, fitting or compound. In this standard, only the method for isolation of the PVC-resin is detailed, while for the determination of viscosity number reference is made to ISO 174. An equation for the calculation of K-value (according to Fikentscher) from viscosity data is given (K-values corresponding to a series of viscosity numbers for PVC resin are given for information in annex A). The presence of other polymers may invalidate the method (see clause 3).
Kunststoff-Rohrleitungs- und Schutzrohrsysteme - Rohre und Formstücke aus weichmacherfreiem Polyvinylchlorid (PVC-U) - Vorbereitung der Proben zur Bestimmung der Viskositätszahl und Berechnung des K-Wertes
Diese Norm legt ein Verfahren zur Bestimmung der Viskositätßahl und des K-Wertes eines Polyvinylchlorid (PVC)-Harzes aus einem Rohr, Formstück oder Compound fest. In dieser Norm wird nur das Verfahren zur Abspaltung des PVC-Harzes beschrieben, da zur Bestimmung der Viskositätßahl auf ISO 174 verwiesen wird. Eine Gleichung zur Berechnung des K-Wertes (nach Finkentscher) aus den Viskositätsdaten wird angegeben. (K-Werte, die mit einer Reihe von Viskositätßahlen für PVC-formmasse korrespondieren, sind zur Information in Anhang A angegeben).
Systèmes de canalisations et de gaines en plastiques - Tubes et raccords en poly(chlorure de vinyle) non-plastifié (PVC-U) - Préparation d'un échantillon pour la détermination de l'indice de viscosité et le calcul de la valeur-K
Cette norme spécifie une méthode de détermination de l'indice de viscosité et de la valeur-K d'une résine de PVC prélevée sur un tube, un raccord ou une composition vinylique. Dans cette norme, seule la méthode de séparation de la résine PVC est détaillée, alors que pour la détermination de l'indice de viscosité, référence est faite à l'ISO 174. Une équation pour le calcul de la valeur K (selon Fikentscher), à partir de la viscosité est donnée. (Les valeurs de K correspondant à une série d'indices de viscosité pour une résine PVC sont données pour information dans l'annexe A).
Cevni sistemi iz polimernih materialov - Cevi in fitingi iz nemehčanega polivinilklorida (PVC-U) - Priprava vzorcev za določanje viskoznostnega števila in izračunavanje K-vrednosti
General Information
- Status
- Withdrawn
- Publication Date
- 29-Sep-1994
- Withdrawal Date
- 06-Sep-2011
- Technical Committee
- CEN/TC 155 - Plastics piping systems and ducting systems
- Drafting Committee
- CEN/TC 155 - Plastics piping systems and ducting systems
- Current Stage
- 9960 - Withdrawal effective - Withdrawal
- Start Date
- 07-Sep-2011
- Completion Date
- 07-Sep-2011
Relations
- Effective Date
- 10-Sep-2011
- Referred By
EN ISO 10510:2011 - Tapping screw and washer assemblies with plain washers (ISO 10510:2011) - Effective Date
- 28-Jan-2026
Frequently Asked Questions
EN 922:1994 is a standard published by the European Committee for Standardization (CEN). Its full title is "Plastics piping and ducting systems - Pipes and fittings of unplasticized poly(vinyl chloride) (PVC-U) - Specimen preparation for determination of the viscosity number and calculation of the K-value". This standard covers: This Standard specifies a method for determining the viscosity number and K-value of a PVC-resin derived from a pipe, fitting or compound. In this standard, only the method for isolation of the PVC-resin is detailed, while for the determination of viscosity number reference is made to ISO 174. An equation for the calculation of K-value (according to Fikentscher) from viscosity data is given (K-values corresponding to a series of viscosity numbers for PVC resin are given for information in annex A). The presence of other polymers may invalidate the method (see clause 3).
This Standard specifies a method for determining the viscosity number and K-value of a PVC-resin derived from a pipe, fitting or compound. In this standard, only the method for isolation of the PVC-resin is detailed, while for the determination of viscosity number reference is made to ISO 174. An equation for the calculation of K-value (according to Fikentscher) from viscosity data is given (K-values corresponding to a series of viscosity numbers for PVC resin are given for information in annex A). The presence of other polymers may invalidate the method (see clause 3).
EN 922:1994 is classified under the following ICS (International Classification for Standards) categories: 23.040.20 - Plastics pipes; 23.040.45 - Plastics fittings. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 922:1994 has the following relationships with other standards: It is inter standard links to EN ISO 13229:2011, EN ISO 10510:2011. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 922:1994 is associated with the following European legislation: EU Directives/Regulations: 93/38/EEC; Standardization Mandates: M/BC/CEN/88/15. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
EN 922:1994 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-1997
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SROLYLQLONORULGD 39&8 3ULSUDYDY]RUFHY]DGRORþDQMHYLVNR]QRVWQHJDãWHYLODLQ
L]UDþXQDYDQMH.YUHGQRVWL
Plastics piping and ducting systems - Pipes and fittings of unplasticized poly(vinyl
chloride) (PVC-U) - Specimen preparation for determination of the viscosity number and
calculation of the K-value
Kunststoff-Rohrleitungs- und Schutzrohrsysteme - Rohre und Formstücke aus
weichmacherfreiem Polyvinylchlorid (PVC-U) - Vorbereitung der Proben zur Bestimmung
der Viskositätszahl und Berechnung des K-Wertes
Systemes de canalisations et de gaines en plastiques - Tubes et raccords en poly
(chlorure de vinyle) non-plastifié (PVC-U) - Préparation d'un échantillon pour la
détermination de l'indice de viscosité et le calcul de la valeur-K
Ta slovenski standard je istoveten z: EN 922:1994
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