If the user is looking for standards related to aviation fuel filtration, the correct document is API RP 1581.
Have you ever seen a jumble of numbers on a tank's data plate? EEMUA 158 defines a clear marking system (including the "EEMUA 158 shell" symbol) that tells inspectors the maximum working pressure, test date, MAWP, and material group at a glance. eemua 158 standard pdf
EEMUA 158 is a practical engineering guideline published by the Engineering Equipment and Materials Users Association (EEMUA) that focuses on specifying, selecting, installing, testing and maintaining alarm, monitoring and protective device systems used for plant and process safety. It is widely used in hazardous industries (oil & gas, chemical, petrochemical, power generation, and manufacturing) to support safety systems that protect people, environment and assets by ensuring timely detection of abnormal conditions and appropriate operator or automated responses. If the user is looking for standards related