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ACR Working Pressures Data Sheet

The document provides tables listing the maximum working pressures (MWP) in bars for standard copper refrigeration and air conditioning tubes of various outer diameters, wall thicknesses, and material conditions. The MWP values are calculated based on stress values from industry standards and can be up to 1.5 times higher for testing. Tube dimensions ranging from 1/4 to 4-1/8 inches in outer diameter are specified along with corresponding MWP levels in both annealed and supplied conditions.

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Andrés Gómez
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27 views2 pages

ACR Working Pressures Data Sheet

The document provides tables listing the maximum working pressures (MWP) in bars for standard copper refrigeration and air conditioning tubes of various outer diameters, wall thicknesses, and material conditions. The MWP values are calculated based on stress values from industry standards and can be up to 1.5 times higher for testing. Tube dimensions ranging from 1/4 to 4-1/8 inches in outer diameter are specified along with corresponding MWP levels in both annealed and supplied conditions.

Uploaded by

Andrés Gómez
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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Refrigeration and Air Conditioning Tubes Working Pressures

The table below and on the next page give the maximum working pressure (MWP)
They have been calculated based on the requirements of EN378:2:2008 using the stress values according to EN
14276. Although straight tube is supplied in either half hard or fully hard condition, we have also quoted figures
based on annealed condition which is representative of the tube in the area immediately surrounding brazed joints.
The maximum test pressure can be 1.5 times that of the (MWP)

Standard Copper Coiled Tube to EN 12735-1 R220

Wall MWP in annealed condition


O.D. (inches) (inches) Gauge (SWG) up to 100 c
1/4 0.028 22 125
5/16 0.028 22 98
5/16 0.036 20 129
3/8 0.032 21 81
1/2 0.032 21 69
5/8 0.036 20 61
3/4 0.040 19 54
7/8 0.040 19 46

The Lawton Tube Co. Ltd Telephone: (024) 7646 6203


Torrington Avenue, Coventry CV4 9AB Fax: (024) 7669 4183
E-mail: sales@lawtontubes.co.uk
www.lawtontubes.co.uk
O.D. (inches) Wall (inches) Gauge MWP in annealed MWP in supplied*
(SWG) condition at 100deg C condition at 100deg C
3/8” 0.032 21 93 108
1/2” 0.036 20 78 91
1/2” 0.048 18 102 118
5/8” 0.036 20 62 73
5/8” 0.040 19 67 79
5/8” 0.048 18 81 95
3/4” 0.036 20 51 61
3/4” 0.040 19 57 73
3/4” 0.048 18 65 77
3/4” 0.064 16 88 102
7/8” 0.040 19 46 55
7/8” 0.048 18 55 66
7/8” 0.064 16 75 88
7/8” 0.104 12 125 142
1.1/8” 0.048 18 43 51
1.1/8” 0.064 16 57 68
1.1/8” 0.080 14 72 85
1.3/8” 0.048 18 35 41
1.3/8” 0.064 16 47 55
1.3/8” 0.080 14 59 69
1.3/8” 0.104 12 77 90
1.5/8” 0.048 18 29 35
1.5/8” 0.064 16 39 47
1.5/8” 0.080 14 49 58
1.5/8” 0.104 12 65 76
1.5/8” 0.116 11 73 85
2.1/8” 0.048 18 22 27
2.1/8” 0.064 16 30 35
2.1/8” 0.080 14 37 44
2.1/8” 0.104 12 49 58
2.5/8” 0.048 18 18 25
2.5/8” 0.064 16 24 33
2.5/8” 0.080 14 30 41
2.5/8” 0.104 12 39 54
3.1/8” 0.064 16 20 28
3.1/8” 0.080 14 25 35
3.1/8” 0.104 12 33 45
3.5/8” 0.064 16 17 24
3.5/8” 0.080 14 22 30
4.1/8” 0.064 16 15 21
4.1/8” 0.080 14 19 26
4.1/8” 0.104 12 25 34

The Lawton Tube Co. Ltd Telephone: (024) 7646 6203


Torrington Avenue, Coventry CV4 9AB Fax: (024) 7669 4183
E-mail: sales@lawtontubes.co.uk
www.lawtontubes.co.uk

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