BS EN ISO 21787:2006+A1:2019

This International Standard specifies requirements for the design, functional characteristics and manufacture of globe valves made of thermoplastics materials intended for isolating and control service, their connection to the pipe system, the body materials and their pressure/temperature rating between − 40 °C and + 120 °C, for a lifetime of 25 years, and also specifies their tests.

This International Standard specifies requirements for the design, functional characteristics and manufacture of globe valves made of thermoplastics materials intended for isolating and control service, their connection to the pipe system, the body materials and their pressure/temperature rating between−40°C and+120°C, for a lifetime of 25years, and also specifies their tests.This International Standard is applicable to hand- or power-operated valves to be installed in industrial pipe systems, irrespective of the field of application and the fluids to be conveyed.NOTE1 Industrial pipe systems also include systems for water supply for general purposes, drainage and sewerage.NOTE2 Special requirements can apply to pipe systems for water for human consumption.This document is concerned with the following ranges of DN:DN10, DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300 and DN350.and the range of PN and ClassPN6, PN10, PN16, and Class150.NOTE3 Different DN and/or PN can be declared by the manufacturer.