Industrial valves. Method for sizing the operating element1 Scope This European Standard specifies the requirements for establishing the minimum size of the operating element supplied with an industrial valve having regard for the force applied by one person to operate the valve under specified working conditions. This standard applies to manual operating elements of sizes from 100 mm to 1 000 mm: directly mounted on valves; mounted on valve reduction gearboxes; used for manual operation of power actuated

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chemical or physical influences

This standard should be used where appropriate with product standards which specify performance requirements for joints

Advice is also given on those situations in which the processes are unsuitable or marginally suitable

7 µg/m−3 to 1

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these deprecated terms are included along with a reference to the preferred term

This ensures that the motion of one gear is transferred to the other at locally constant angular velocity

Consumer Product Safety Commission (CPSC)