Copyright © 2007 Fluor Corporation

Flanges

Lesson Objective

Lesson Objectives

What are Flanges used for?

Material & Rating of Flanges

Flange Material

Flange Rating

Primary Service Pressure Ratings

Steel Flanges Cast Iron Flanges

(for strength) (for low pressure & temperature services)

*150#

*300#

400#

600#

900#

1500#

2500#

25#* 125#

* 250#800#

*most common

Pressure Rating Chart

Common Flange Facings

Flat Face:

Y Y

Cast Iron Flange Breakage

Cast Iron Flange Cautions

Ring Type Joint Flange

Basic Types of Flanges

Weld Neck Flange

Slip-On Flanges

EXTERNAL

WELD

INTERNAL

WELD

Slip-On Flange Fitting Chart

REFERENCE: Practice 000.250.9811

Slip-On Reducing Flange

Socketweld Flange

Threaded Flanges

Blind Flange

Pipe

Stub End

Lap Joint Flange

Buttweld

Lap Joint Flange

Results of different

Manufacturing standard

ANSI Standards

Dimension Charts

150#

Dimension Charts

300#

Dimension Charts

600#

4-Bolt Hole 8-Bolt Hole

(12 and 16 bolt hole not shown)

Bolt Hole Pattern And Location

Drawing Representation :

Weld Neck

Lap JointStub End

Piping Plan Piping Isometric

Single Line Double Line

Reference: Fluor Practice # 000 250 9818 Pg. 4

Drawing Representation :

Slip On

ReducingSlip On

Piping Plan Piping Isometric

Single Line Double Line

*Size Callout Required:

10” = Nominal Flange Size6” = Nominal Pipe Size

Reference:Fluor Practice # 000 250 9818 Pg. 4

Drawing Representation :

Socket Weld

Threaded

Piping Plan Piping Isometric

Single Line Double Line

Reference: Fluor Practice # 000 250 9818 Pg. 4

Drawing Representation :

Blind

Piping Plan Piping Isometric

Single Line Double Line

Reference: Fluor Practice # 000 250 9818 Pg. 4

Locating Flanges

PDS Modeling

Flanged end for flushing

Butterfly Valve connection

Blind Flangeat Valve

Flanges atremovable spool

Questions??

Exercise PI-E6

Test PI-T6