Petroleum and natural gas industries. Pipeline transportation systems. Subsea pipeline valves1 Scope This International Standard specifies requirements and gives recommendations for the design, manufacturing, testing and documentation of ball, check, gate and plug valves for subsea application in offshore pipeline systems meeting the requirements of ISO 13623 for the petroleum and natural gas industries. This International Standard is not applicable to valves for pressure ratings exceeding PN 420 (Class 2500).

Aluminium extrusions are used in a wide range of sectors including construction

A suitability test is specified to check the behavior of the structural bolting assemblies

the subjects names) outside the object

Proprietary housing systems and houses of timber

An additional requirement has been added for the Aspergillus spore suspension and therefore results obtained using EN 1657:2005 and not fulfilling this additional requirement will need to be confirmed by repeating the tests using EN 1657:2015

Operating modes: comfort

are measured includes lakes

Examples of labels for women’s underwear

BS IEC 63147 does not apply to the following:

It specifies the additional requirements of the sound absorption measurements and the operating and mounting conditions that should be used for the test

It protects financial well-being and reputation

It only concerns units that are permanently connected to the mains supply at point of entry or point of use