PVC butterfly valve o le palasitika butterfly valve.Palasitika butterfly valve o loʻo i ai le malosi o le corrosion resistance, lautele faʻaogaina, ofuina teteʻe, faigofie disassembly ma faigofie tausiga.E talafeagai mo le vai, ea, suauu ma corrosive vailaʻau vai.O le tino o le valve fa'atupu...
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