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The perfect fire protection for inflammable pipes: The inserted fire protection material of the PYROCOMB® pipe sleeves expands in only a few minutes under high-pressure development. The resulting inflation pressure closes the soft plastic pipes and the transfer of fire and smoke is therefore prevented. The pipe sleeve also offers numerous benefits during installation. It is approved for many pipe materials. In addition, it allows sloping pipe routing of up to 39 degrees. During the installation of the sleeves, the noise insulation may remain on the pipes. The pipe diameter is also flexible. The function of the pipe sleeve remains intact, even on pipes of three sizes smaller.