api 5000Beware, some suppliers and manufacturers supply normal A105N 36K material flanges stamped as 3,000 or 5,000, these interconnect with API sizes (example a 2 ANSI A105 1500 class flange rated at 3,700 psi CWP is the same asQjet (API 5000); Compatible with API5000 instruments. Part Number: 1012622. $ 3,452.37. Quantity. Please enter 1 or more.Please enter a whole number.