Copper – Internal Working Pressure DWV

Calculated Rated Internal Working Pressure for Copper Tube: DWV*

Nominal or standard size, in inches	Annealed***
	S= 6000 psi 100F	S= 5100 psi 150F	S= 4900 psi 200F	S= 4800 psi 250F
1-1/4	330	280	269	264
1-1/2	293	249	240	235
2	217	185	178	174
3	159	135	130	127
4	150	127	122	120
5	151	129	124	121
6	148	126	121	119
8	146	124	119	117

258220165 230196147 170145109 12510680 11710075 11910176 1169974 1149773

Nominal or standard size, in inches	Annealed***
	S= 4700 psi 300F	S= 4000 psi 350F	S= 3000 psi 400F
1-1/4
1-1/2
2
3
4
5
6
8

566566566566 503503503503 373373373373 273273273273 257257257257 260260260260 255255255255 251251251251

Nominal or standard size, in inches	Drawn**
	S= 10,300 psi 100F	S= 10,300 psi 150F	S= 10,300 psi 200F	S= 10,300 psi 250F
1-1/4
1-1/2
2
3
4
5
6
8

549533516 489474459 362352341 265257249 250242235 252245237 247240232 244236229

Nominal or standard size, in inches	Drawn**
	S= 10,000 psi 300F	S= 9,700 psi 350F	S= 9,400 psi 400F
1-1/4
1-1/2
2
3
4
5
6
8

* Based on maximum allowable stress in tension (psi) for the indicated temperatures (F).

** When brazing or welding is used to join drawn tube, the corresponding annealed rating must be used.

*** Types M and DWV are not normally available in the annealed temper. Shaded values are provided for guidance when drawn temper tube is brazed or welded. For more information, see Pressure Ratings and Burst Strength.