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+44(0) 24 7646 6203
At Lawton Tubes, we provide quality, industry-leading copper straight couplings.
All sealed in protective polythene bags and are product labelled.
Fittings are supplied in reinforced cardboard boxes, labelled with product information and outline drawing of fitting.
Each fitting is engraved with unique branding, space permitting
Degreased copper fittings specifically for ACR and manufactured to ASME B16.22-2001 which can be used in assemblies subject to the Pressure Equipment Directive.
The burst pressure of each fitting size at 55ºc has been determined and a safety factor of at least 3 has been applied to establish a recommended maximum working pressure.
All testing has been conducted in accordance with BS EN 378-2:2008 (+A1:2009).
| Size | Burst Pressure | up to 55ºC | up to 100ºC | up to 150ºC |
| 1/4 “ | 500 bar | 150 bar | 150 bar | 131 bar |
| 3/8 ” | 360 bar | 120 bar | 120 bar | 105 bar |
| 1/2 “ | 320 bar | 100 bar | 100 bar | 87 bar |
| 5/8 “ | 300 bar | 100 bar | 100 bar | 87 bar |
| 3/4 “ | 280 bar | 90 bar | 90 bar | 79 bar |
| 7/8 “ | 240 bar | 80 bar | 80 bar | 70 bar |
| 1 1/8 “ | 220 bar | 75 bar | 75 bar | 66 bar |
| 1 3/8 “ | 220 bar | 65 bar | 65 bar | 57 bar |
| 1 5/8 “ | 180 bar | 55 bar | 55 bar | 48 bar |
| 2 1/8” | 100 bar | 33 bar | 33 bar | 29 bar |
| 2 5/8” | 93 bar | 31 bar | 31 bar | 27 bar |
| 3 1/8” | 87 bar | 29 bar | 29 bar | 25 bar |
| 3 5/8” | 84 bar | 28 bar | 28 bar | 24.5 bar |
| 4 1/8” | 81 bar | 27 bar | 27 bar | 23.5 bar |
Copper Straight Coupling (C x C)
