BS EN ISO 16135:2006+A1:2019 Industrial valves — Ball valves of thermoplastics materials. Amended standard published

What is it?: This International Standard specifies requirements for the design, functional characteristics and manufacture of ball valves made of thermoplastics materials intended for isolating service, for control service, and to divert/mix fluids, 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.

Why is it important?: The main changes compared to the previous edition are as follows:

— the referenced standards have been updated;
— The valve body and bonnet/cover materials shall be selected from ISO 15493 or ISO 15494 or ISO 10931;
— For each valve body material, the design strength shall conform to ISO 9393-2;
— The seat and packing/shell leak tightness shall be verified on all complete valves through seat and packing tests carried out in accordance with the requirements of ISO 9393-2.
— The lever and hand-wheel rim forces to open and fully close the valve shall not exceed the values given for the operating manual force F in EN 12570.
— The body and bonnet/cover raw materials and the long-term behaviour of the complete valve shall be tested in accordance with ISO 1167-1.

Supersedes: This is an amended standard, which supersedes BS EN ISO 16135:2006, which is withdrawn.

Published in Valve User Magazine Issue 51

Winter 2019 // Issue 51
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