API standard Safty Clamp API 7K and ISO 9001/2000 inspection OEM interchangeable good ... are manufactured accordingly to API-7K standards. Parts are interchangeable on these popular pump modelsEmsco:F-1300, F-1600, FB1300, ... , D-375, D-700, Ideco: T-500, T-800, T-1000, T-1300, T-1600, National: 7P50, 8P80, 9P100, 10P130, ... OPI, Ellis Williams, Wilson, Gaso, Skytop/Brewster. API standard Safty Clamp