1. It is cut accurately off the necessary length of a tube. We check a tube edge; it has to be equal, without agnails

2. We turn off a nut from the case of a fitting and we put on it a tube.

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3. It is accurately unclenched the fixing ring and we put on it a tube (through a tube end face), on the third wave corrugations.

4. We put a tube on a clamping ring and a silicone sealant.

5. We insert a tube into the case of a fitting and we tighten a cap nut.