Standard: Q/TF-B27P.01

Nominal pressure: PN1.0-1.6Mpa

Nominal diameter: DN50-300

Suitable temperature: ≤ 80 ℃

Materials: cast iron 、 ductile iron

Leakage rate: GB/T13927 Class A

Equipped with one big orifice and one small orifice. The big one can release and/or suction air in large amount, and the small one automatically release when the valve chamber is filling up with water. For air way of big orifice is symmetric, it is superior in air releasing and suction than double orifice air valve of same size. Matching pipe size is DN100 -3000mm .