BS ISO 19973-5:2015

BS 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, this variable is understood as a number of cycles.

This part of ISO 19973 also specifies test equipment and threshold levels for tests to assess the reliability of these pneumatic valves.


Cross References:
ISO 1219-1
ISO 5598
ISO 8778
ISO 11727
ISO 19973-1
ISO 80000-1
IEC 60050-191
ISO 6358


All current amendments available at time of purchase are included with the purchase of this document.