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Table G. Types K, L, & M – Actual burst pressures – (copper water tube,
psi at room temperature)


Nominal or
standard size,
inches
Actual outside
diameter, in.
K
M
Drawn
Annealed
Drawn
Annealed
Drawn
Annealed
1/2
5/8
9840
4535
7765
3885
6135
–
3/4
7/8
9300
4200
5900
2935
4715
–
1
1 1/8
7200
3415
5115
2650
3865
–
1 1/4
1 3/8
5525
2800
4550
2400
3875
–
1 1/2
1 5/8
5000
2600
4100
2200
3550
–
2
2 1/8
3915
2235
3365
1910
2935
–
2 1/2
2 5/8
3575
–
3215
–
2800
–
3
3 1/8
3450
–
2865
–
2665
–
4
4 1/8
3415
–
2865
–
2215
–
5
5 1/8
3585
–
2985
–
2490
–
6
6 1/8
3425
–
2690
–
2000
–
8
8 1/8
3635
–
2650
–
2285
–

đ The figures shown are averages of three certified tests performed on each type and size of water
tube. In each case wall thickness was at or near the minimum prescribed for each tube type. No
burst pressure in any test deviated from the average by more than 5 percent.

ē These burst pressures can be used for ACR tube of equivalent actual O.D. and wall thickness.
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