sanitary butterfly valve(4 position or 12 position, stainless handle) ISO9001:2008,CE,TUV certified, CNC machined. export to UK ... sanitary butterfly valve(4 position or 12 position, stainless handle)Material quality: AISI304, 316L Standard: DIN/SMS/ISO/IDF/3A ... , SMS, ISO9000. sanitary butterfly valve(4 position or 12 position, stainless handle)