7

1

Carbon Steel, measuring range in inches

”

4

316/316L Stainless Steel, measuring range in inches

MATERIALS OF CONSTRUCTION

•

A

150# ANSI class

B

300# ANSI class

C

600# ANSI class

D

900# ANSI class

E

1500# ANSI class

F

5000 psi (process flanges will be 2500# ANSI)

CHAMBER RATING

1

2

1"

31

4

2"

PROCESS CONNECTION SIZE

Side/Side Configurations

Head Flange Type

A

NPT

B

SW

Slip-on or weld neck

D

Slip-on RF Flange

E

Weldneck RF Flange

Chamber rating codes A, B & C only

Weld neck

F

Weldneck RJ Flange

Chamber rating codes C, D, E & F only

Side/Bottom Configurations

G

NPT

H

SW

Slip-on or weld neck

K

Slip-on RF Flange

L

Weldneck RF Flange

Chamber rating codes A, B & C only

Weld neck

M

Weldneck RJ Flange

Chamber rating codes C, D, E & F only

PROCESS CONNECTION TYPE AND CONFIGURATION

12 to 240 inches, fourth digit numeric

Example: 12 inches = 012

MEASURING RANGE

• Process connection materials will match chamber materials

Process flange, if applicable, will match chamber rating, except as indicated

Process connection materials will match chamber materials

See page 4 to determine type of head flange

Cannot use slip-on flanges on 2" or 3", 5000 psi for B31.3, nor on 2" or 3",

≥600# for B31.1

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12

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14

12

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13