API standard Safty Clamp API 7K and ISO 9001/2000 inspection OEM interchangeable ... pumps such as Emsco: F-500 mud pump, F-800 mudpump, F-1000 mud pump, F-1300 mud pump, F-1600 mud pump; Gardner ... are interchangeable on these popular pump modelsEmsco:F-1300, F-1600, FB1300, FB1600, F-800, F-1000, F-500, F-350, DB-550, DA-700, ... OPI, Ellis Williams, Wilson, Gaso, Skytop/Brewster. API standard Safty Clamp