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cutting gas pipes, deburring pipes, bending pipes, marking insertion depth inoxpres gas pipes, seal ring check, connection pipe and press fitting, making press connection
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Processing
| Pipes - cutting to length, deburring, bending |
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InoxPRES GAS pipes should be cut to length using professional pipe cutters which are suitable for the material in
use. Not permitted are:
• Tools which cause tarnishing during the cutting operation
• Oil-cooled saws
• Flame cutting or angle grinders.
To avoid damaging the sealing ring when inserting the pipe into the press fitting, the pipe must be carefully deburred, both inside and outside, following cutting to length.
InoxPRES GAS pipes can be bent cold using standard bending tools. R = 3.5xD.
Hot bending of the pipes is not permitted. |
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cutting gas pipes, deburring pipes, bending pipes
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| Marking the insertion depth/stripping |
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Sufficient mechanical strength of the press fitting connection will only be achieved if the insertion depths required from Raccorderie Metalliche are adhered to. These insertion depths are valid for InoxPRES GAS pipes or fittings with insertion ends (i. e. fittings without pressfit end) and must be marked using a suitable marking tool.
The marking of the insertion depth on the pipe must be visible directly next to the press fitting formed end following pressing. |
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marking insertion depth inoxpres gas pipes
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| Press fitting seal ring check |
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Before assembly the sealing ring must be checked to ensure that it is lying in the pressing groove correctly and that it is clean and undamaged.
Additionally, the fitter should check whether the ring in position is suitable for the special application, or whether another sealing ring needs fitting.
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seal ring check
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| Making the press connection |
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Using light pressure and making a turning movement at the same time, press the pipe into the press fitting up to the marked insertion depth.
If the tolerances are so narrow that additional force is required to insert the pipe into the press fitting, then water or soapy water may be used as a lubricant.
Oil and grease are not permitted for use as lubricants. Pressing is carried out using suitable electromechanical/ electrohydraulic pressing tools and dimension-matching pressing jaws or collars/chains.
Following pressing, the complete connection should then be checked to ensure that the work has been carried out correctly and that the insertion depth is correct.
The fitter should also ensure that all connections have actually been pressed.
Following completed pressing, the pressing points may not be subjected to further mechanical loading. The positioning and straightening of the pipes and the sealing of threaded connections must therefore take place before the pressing is carried out.
Slight movement and lifting of pipes, for example for painting work, is permitted. |
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connection pipe and press fitting, making press connection
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