EN ISO 5211:2017 Industrial valves - part turn actuator attachments - update standard issued

What is it?:

This European/ International Standard specifies the requirements for the attachment of part turn actuators and/ or gearboxes to valves. It specifies mating dimensions for attachment and the dimensions of the actuator/ gear box drive components.

Why Is it Important?:

It is the internationally accepted standard and widely used by actuator and valve manufacturers. It is widely referenced in EN and ISO valve product standards. It has been revised to:
• Introduce new flange sizes
• Introduce improved flat head
• Introduce involute spline
• Introduce bi-square
• Adjustment of Clause 6 on designation
• Positions of 180° keys on the driven component

Published in Valve User Magazine Issue 43


Autumn 2017 // Issue 42
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