... 1.Wafer type with dual-shaft. 2..Size:DN50(2")DN300(12") 3..$13.11-309.32/set in ... Design & Manutacture acc. to API609, MSS SP-67, BS5155, BS EN593. Face to Tace acc. to DIN3202, API609, MSS ... , BS5155, BS EN558 Top Flange acc. to ISO5211.Pressure test acc. to API598, BS EN12266-1, DIN3230, BS5155. ... Side Flange acc. to DIN2501, ANSI125/150, AS2129, BS4504, BS10D&E, JIS10K ...