EN 10204 May not expressly state it but you would expect someone reviewing such a certificate to find at least the wording of 'Test Certification - acc. to EN 10204 3.1" to appear on a document to qualify it. Simple common sense. What exactly is the problem with being unable to do this? If I asked a vendor for certification to EN 10204 3.1 (or 3.2), I would expect to see that qualifying statement on the certificate. How else am I assured it complies?
*** Per ISO-4126, the generic term
'Safety Valve' is used regardless of application or design ***
*** 'Pressure-relief Valve' is the equivalent ASME/API term ***