Joints for Copper Tubing

Working Conditions

Material

[_____] kPa (gage) [_____] degrees C

Composition or Copper

Superheated Steam

Less Than 400 degrees C

Metal-Jacketed Composition,

[_____] kPa (gage) [_____] degrees C

Monel, Steel, or Soft Steel

Working Conditions

Material

Saturation

[_____] psig [_____] degrees F

Composition or Copper

Superheated Steam

Less Than 750 degrees F

Metal-Jacketed Composition,

[_____] psig [_____] degrees F

Monel, Steel, or Soft Steel

Gaskets shall be as thin as the finish of surfaces will permit.

Metal or metal-jacketed non-asbestos gaskets shall be used with

small male and female or small tongue-and-groove flanges or

flanged fittings; they may be used with steel flanges with lapped,

large male and female, large tongue-and-groove, or raised faces.

Full faced gaskets shall be used with flat-faced bronze flanges.

Lapped steel flanges, or raised-face steel flanges shall have ring

gaskets with an outside diameter extending to the inside of the

bolt holes. Widths of gaskets for small male and female and for

tongue-and-groove joints shall be equal to the widths of the male

face or tongue. Gaskets shall have an inside diameter equal to or

larger than the port openings. Rings for ring joints shall be in

accordance with dimensions in ASME B16.20, suitable for the

service conditions encountered, and shall be softer than the

flanges. Dimensions for non-metallic gaskets shall be in

accordance with ASME B16.21.

c.

Butt Weld Joints: ASME B31.1. The use of backing rings shall

conform to ASME B31.1. Ferrous rings shall be of good weldable

quality and shall not exceed 0.05 percent sulfur; for alloy pipe,

backing rings shall be of material compatible with the chemical

composition of the parts to be welded and preferably of the same

composition. Backing rings shall be continuous machined or split

band type.

d.

Socket Weld Joints:

ASME B31.1.

2.2.8.2

Joints for Copper Tubing

a.

Solder Joints: ASTM B 32, alloy grade Sb5 solder for steam

pressure 103 kPa (gage) 15 psig or less.

b.

Brazed Joints:

FS QQ-B-654 for steam pressure 827 kPa (gage) 120

psig or less.

2.2.9

Expansion Joints

2.2.9.1

Packless Type

**************************************************************************

NOTE: Consult reference document to determine Type,

Class, and Style as appropriate for the project.

SECTION 15183N

Page 19