Full Face Gaskets – AWWA C207 & C228 Class B, D & E

The table below provides the gasket dimensions for American Water Works Association flanges of type C207 (steel flanges) and C228 (stainless steel flanges).

NPS = Nominal Pipe Size
ID = Inner Diameter
OD = Outer Diameter
BCD = Bolt Circle Diameter

General Note:
All dimensions are in inches.
Larger sizes as well as customized sizes can be furnished.
Bolt diameter should be 1/8″ less than the bolt hole size.

Standards:
ASME B16.5 – Pipe flanges and flanged fittings: NPS 4 through 24
ASME B16.47 – Large diameter steel flanges: NPS 26 through NPS 60 standard
¹ For Reference Only

No liability or guarantee for the correctness and completeness of the information provided

NPS = Nominal Pipe Size ID = Inner Diameter OD = Outer Diameter BCD = Bolt Circle Diameter General Note: All dimensions are in inches. Larger sizes as well as customized sizes can be furnished. Bolt diameter should be 1/8″ less than the bolt hole size. Standards: ASME B16.5 – Pipe flanges and flanged fittings: NPS 4 through 24 ASME B16.47 – Large diameter steel flanges: NPS 26 through NPS 60 standard ¹ For Reference Only No liability or guarantee for the correctness and completeness of the information provided

Custom Configurations of Any Type Available