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      quick air valve

      standard:Q/TF-B27P.01,BS,ISO,DIN
      PN10,PN16
      DN50-300
      material:grey cast iron,ductile iron
      leakage:GB/T 13927 class A

      There is a large and a small orifices. The large one can intake and release large amount of air. The air way of the large orifice is sym-metrical which makes the air releasing amount more than that of the same size doubles roifices air releasing valve. The suitable pipeline is DN100-3000mm.

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