Vacuum Anti-floating Cover M-6

Vacuum Anti-floating Cover M-6


Feature 1
 A cover working as a fixing device inside the water meter box prevents insulated styrofoam from floating.


Feature 2
 Freezing and bursting can be prevented significantly by stopping leakage of terrestrial heat formed underground in winter.


Invention patent: No. 10-1128268

Vacuum cover for preventing floating

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