... its hygienic features. For this reason, in the buildings, factories and other places where hydrophore systems are used, it is obligatory ... the membranes are certified. Furthermore, the only point where the water gets in touch with the tank ,inlet-outlet, is the ... upon requestMembranes*High quality EPDM membranes, hygienic certified, approved by European Union and USA Institutions*DIN4807-3,NSF-61,WRAS ...