PRESSURE CLASSES

API 6B

1”

-

-

-

RX-82

-

-

1 3/8”

-

-

-

-

-

RX-201

1 ½”

RX-20

RX-20

RX-20

RX-84

RX-20

RX-20

1 13/16"

-

-

-

-

-

RX205

2”

RX-23

RX-23

RX-23

RX-85

RX-24

RX-24

2 ½”

RX-26

RX-26

RX-26

RX-86

RX-27

RX-27

2 9/16”

-

-

-

-

-

RX210

3”

RX-31

RX-31

RX-31

RX-87

RX-31

RX35

3 ½”

-

-

-

RX-89

-

-

4”

RX-37

RX-37

RX-37

RX-88

RX-37

RX-39

4 1/16"

-

-

-

-

-

RX-215

5”

RX-41

RX-41

RX-41

RX-90

RX-41

RX-44

6”

RX-45

RX-45

RX-45

-

RX-45

RX-46

8”

RX-49     RX-99 (2)

RX-49

RX-49

-

RX-49     RX-99 (2)

RX-50

10”

RX-53

RX-53

RX-53

RX-91

RX-53

RX-54

12”

RX-57

RX-57

RX-57

-

RX-57

-

14”

-

-

-

-

-

RX-63

16”

RX-65

RX-65

RX-65

-

RX-69

-

18”

RX-69

RX-69

RX-69

-

RX-73

-

20”

RX-73

RX-73

RX-73

-

RX82

-

Notes: (1) - Class 720, 960, 10000 and 2900 flanges to API 6B are obselete. Data is for informational purposes only.     (2) - Crossover Flange Connection.