Shall i connect a 25 mm fire hose reel station to the plumbing line is it applicable ?
That is a very vague question with no applicable building code, no authority having jurisdiction.
If the authority having jurisdiction requires an NFPA 14 class 2 or class 3 system, then, no, you can't simply connect to the domestic plumbing unless you get an exemption.
one project i received in an drawing they are tapping hose reel to the plumbing line.
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