ISO 19973-5:2015

OVERVIEW

ISO 19973-5:2015 provides test procedures for assessing the reliability of the following types of pneumatic valves:

? non-return (check) valves;

? pilot-operated non-return valves;

? shuttle valves;

? dual pressure valves (AND function);

? one-way adjustable flow control valves;

? quick-exhaust valves

by testing and the methods of reporting the results of testing. General test conditions and the calculation method are provided in ISO 19973-1. The methods specified in ISO 19973-1 apply to the first failure, as obtained with the three-points moving average (3PMA) method, without repairs, but excluding outliers.

The lifetime of these pneumatic valves is usually given as a number of cycles. Therefore, whenever the term "time" is used in this part of ISO 19973-5:2015, this variable is understood as a number of cycles.

ISO 19973-5:2015 also specifies test equipment and threshold levels for tests to assess the reliability of these pneumatic valves.

COMMENTS

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