DIN 2459:2017-11 Inseparable elastomer sealed connectors made of metal for metallic pipes for use in drinking water system installation - General requirements and test methods
2017DIN 2459:2017-11 Inseparable elastomer sealed connectors made of metal for metallic pipes for use in drinking water system installation - General requirements and test methods
2011DIN 2459:2011 Inseparable elastomer sealed connectors made of metal for metallic pipes for use in drinking water system installation - General requirements and test methods