update:

better quality or EN versions:

EN 558:2017 Industrial valves - Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems - PN and Class designated valves
EN 1074-6:2008 Valves for water supply - Fitness for purpose requirements and appropriate verification tests - Part 6: Hydrants
EN ISO 4126-1:2013/A1:2016 Safety devices for protection against excessive pressure - Part 1: Safety valves - Amendment 1 (ISO 4126-1:2013/Amd 1:2016)
EN ISO 4126-2:2003 Safety devices for protection against excessive pressure - Part 2: Bursting disc safety devices (ISO 4126-2:2003)
EN ISO 4126-5:2013/A1:2016 Safety devices for protection against excessive pressure - Part 5: Controlled safety pressure relief systems (CSPRS) - Amendment 1 (ISO 4126-5:2013/Amd 1:2016)
EN ISO 4126-7:2013/A1:2016 Safety devices for protection against excessive pressure - Part 7: Common data - Amendment 1 (ISO 4126-7:2013/Amd 1:2016)
EN ISO 6553:2017 Automatic steam traps - Marking (ISO 6553:2016)
EN 26553:1991 Automatic steam traps - Marking (ISO 6553:1980)
EN 26554:1991 Flanged automatic steam traps - Face-to-face dimensions (ISO 6554:1980)
EN 26704:1991 Automatic steam traps - Classification (ISO 6704:1982)
EN 26948:1991 Automatic steam traps - Production and performance characteristic tests (ISO 6948:1981)
EN 27841:1991 Automatic steam traps - Determination of steam loss - Test methods (ISO 7841:1988)
EN 27842:1991 Automatic steam traps - Determination of discharge capacity - Test methods (ISO 7842:1988)
EN 28233:1990 Thermoplastics valves - Torque - Test method (ISO 8233:1988)
EN 28659:1990 Thermoplastics valves - Fatigue strength - Test method (ISO 8659:1989)


the new missing is:

EN ISO 15848-1:2015/A1:2017 Industrial valves - Measurement* test and qualification procedures for fugitive emissions - Part 1: Classification system and qualification procedures for type testing of valves - Amendment 1 (ISO 15848-1:2015/Amd 1:2017)


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