Flange - Threaded, ANSI Class 250, B16.1, DI (in)

Flange - Threaded, ANSI Class 250, B16.1, DI (in)

• Raised face flanges are available upon request.
• Flanges may be back or spot faced for compliance with flange thickness tolerances.
• Pipe face-to-face dimensions conform to a tolerance of ± .12" for sizes 4"- 48". Fittings face-to-face dimensions conform to a tolerance of ± .06" for sizes 4"-10" and ± .12" for sizes 12"- 48". The largest opening governs the tolerance for all openings. Center-to-face tolerances are one half the face-to-face tolerances.
• The bolt circle and bolt holes of the above flanges match those of Class 250 flanges shown in ANSI/ASME B16.1.
• Class 250 flanges do not match and can not be joined with Class 125 flanges shown in ANSI/ASME B16.1. Class 250 flanges are compatible with Class 300 flanges.

Size

(NPS)

Diameter

of

Flange

A

of

Raised

Face

B

of

Flange

C

of Hub

at Base

J

of

Hub

L

of

Bolt

Holes

of

Bolt

Holes

Circle

Diameter

P

Weight