Name: EN ISO 21787:2006/A1:2019 — Industrial valves - Globe valves of thermoplastics materials - Amendment 1 (ISO 21787:2006/Amd 1:2019)
SKU: EN ISO 21787:2006/A1:2019
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EN ISO 21787:2006/A1:2019 PDF

Industrial valves - Globe valves of thermoplastics materials - Amendment 1 (ISO 21787:2006/Amd 1:2019)

Название (английский):

EN ISO 21787:2006/A1:2019

Industrial valves - Globe valves of thermoplastics materials - Amendment 1 (ISO 21787:2006/Amd 1:2019)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 13
Дата публикации:: 14 августа 2019 г.
Издание:: CEN EN 21787 edition 1 version 1
ICS:: 23.060.10

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Описание (английский):

Diese Internationale Norm legt die Anforderungen an die Konstruktion, Funktionsmerkmale und die Herstellung von Ventilen aus Thermoplasten zum Absperren und Regeln fest sowie deren Anschluss an das Rohrleitungssystem, Gehäusewerkstoffe und Druck/Temperatur-Zuordnungen zwischen - 40 °C und + 120 °C, für eine Lebensdauer von 25 Jahren. Sie legt auch die entsprechenden Prüfungen fest. Diese Internationale Norm gilt für hand- und kraftbetätigte Armaturen, die in industrielle Rohrleitungssysteme eingebaut werden, unabhängig vom Einsatzbereich und dem zu befördernden Medium. ANMERKUNG 1 Industrielle Rohrleitungssysteme umfassen auch Rohrleitungen für Wasserversorgung für allgemeine Zwecke, Entwässerung und Entsorgung. ANMERKUNG 2 Rohrleitungssysteme für Wasser für den menschlichen Gebrauch können besonderen Anforderungen unterliegen. Diese Internationale Norm erstreckt sich auf die folgenden DN-Bereiche: DN 10, DN 15, DN 20, DN 25, DN 40, DN 50, DN 65, DN 80, DN 100, DN 125 und DN 150 sowie auf die folgenden PN- und Class-Bereiche: PN 6, PN 10, PN 16 und Class 150.

Overview

EN ISO 21787:2006/A1:2019 - Industrial valves: Globe valves of thermoplastics materials (Amendment 1) is a CEN-endorsed amendment to ISO 21787:2006. It updates the original standard’s scope, referenced documents, test and design requirements, and permissable material and pressure/size ranges for globe (stop) valves made from thermoplastic materials. The amendment also includes an informative Annex ZA linking the standard to Directive 2014/68/EU (Pressure Equipment Directive).

Key Topics

Scope and ratings
- Declared nominal diameters (DN): DN 10 to DN 350 (specific list in the amendment).
- Declared pressure ratings: PN 6, PN 10, PN 16, and Class 150. (Note: manufacturers may declare different DN/PN.)
Permitted materials
- Body/bonnet materials: ABS, PE, PP, PVC‑C, PVC‑U, PVDF, referenced to the applicable ISO material standards (e.g., ISO 15493, ISO 15494, ISO 10931).
Design and strength
- Design strength demonstrated by body pressure tests and long‑term behaviour tests in compliance with ISO 9393‑2.
- Temperature-dependent rating factors (f) for different thermoplastics are specified to support lifetime up to 25 years.
Testing and leaktightness
- Seat and packing/shell leaktightness verified on complete valves per ISO 9393‑2.
- Flow resistance, pressure tests and acceptance criteria reference updated EN/ISO test standards (e.g., EN 12266‑1, EN 1267).
Dimensions and interfaces
- Face‑to‑face dimensions for flanged valves follow EN 558; other end connections are the manufacturer’s responsibility.
- Thread and flange references updated (e.g., ISO 7‑1, EN 1092‑1).
Operation
- Permissible manual operating forces and actuator attachment guidance reference EN 12570 and ISO 5210.

Applications

Who uses it
- Valve manufacturers, product designers and material engineers specifying thermoplastic globe valves.
- Plant engineers, procurement and maintenance teams in chemical, water treatment, and process industries seeking compliant valve selection.
- Testing laboratories and conformity assessors verifying performance, leaktightness and pressure capability.
- Regulatory bodies and conformity agents applying the Pressure Equipment Directive (2014/68/EU) where referenced.
Practical value
- Ensures consistent material selection, pressure/temperature rating and test methods for reliable, long‑term performance of thermoplastic globe valves.
- Helps manufacturers declare DN/PN, meet EU essential requirements and provide traceability and operating instructions.

Related Standards (selected)

ISO 21787:2006 (base standard)
ISO 9393‑2 (design strength and testing)
EN 558 (face‑to‑face dimensions)
EN 12266‑1, EN 1267 (valve testing)
ISO 15493, ISO 15494, ISO 10931 (materials/specifications)
ISO 5210, EN 12570, ISO 7‑1, EN 1092‑1

Keywords: EN ISO 21787:2006/A1:2019, globe valves, thermoplastics, valve testing, pressure rating, DN range, PN, PVDF, PVC‑U, valve manufacturer, Pressure Equipment Directive.

EN ISO 21787:2006/A1:2019 PDF

Похожие стандарты

Abstract

Overview

Key Topics

Applications

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