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Table F. Pressure – Temperature Ratings for Copper Tube Joints

Alloy used
for joints
Service
temperature
Recommended maximum internal working pressure, psi
Nominal or standard size, inches
¼ – 1
(incl)
1¼ – 2
(incl)
2½ – 4
(incl)
5 – 8
(incl)
10 – 12
(incl)
50-50
Tin-lead
solder¹
100
K,L,M
200
175
150
130
100
DWV²
95
80
70
150
K,L,M
150
125
100
90
70
DMV²
70
55
45
200
K,L,M
100
90
75
70
50
DMV²
50
40
35
250
K,L,M
85
75
50
45
40
Saturated
steam
K,L,M
15
15
15
15
15
95-5
tin-antimony
solder¹
100
K,L,M
500
400
300
270
150
DMV²
220
165
120
150
K,L,M
400
350
275
250
150
DWV²
195
150
100
200
K,L,M
300
250
200
180
140
DWV²
140
110
80
250
K,L,M
200
175
150
135
110
Saturated
steam
K,L,M
15
15
15
15
15
Brazing alloys
(melting at or
above 1100F)
Pressure-temperature ratings must be consistent with the materials and
procedures employed (see Table 3, annealed)
Saturated
steam
K,L,M
120
120
120
120
120

¹ Solder alloys are covered by ASTM B 32.

² Using ANSI B16.29, “Wrought Copper and Wrought Copper Alloy Solder Joint Drainage
Fittings – DWV,” and ANSI B16.23, “Cast Copper Alloy Solder Joint Drainage Fittings-DWV”.

NOTE: Ratings up to 8 inches are those given in ANSI standard B16.22 “Wrought Copper and Copper Alloy Solder Joint Pressure Fittings” and ANSI B 16.18 “Cast Copper Alloy Solder Joint Pressure Fittings”.

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