Size: DN50 to DN1800. â?¢ Design Standard: BS EN545, ISO2531 â?¢ Material conform to EN-GJS500-7. â?¢Working Pressure: PN16 â?¢Rubber Gasket : EPDM to EN681-1, NBR to EN682 â?¢ WRAS approved FBE coating and Rubber also available on request. * High temperature is available on request. * Un-Restrained Dismantling Joint without Tie-bar.