non-return flap check valve

Check valve (One - way valve) : the check valve and check valve, single valve, or a one-way valve, its role is to ensure that the directional flow of medium pipeline without back function.The bottom valve of the pump suction pipe also belong to the check valve class.Check valve belong to automatic valve. Pressure 1.6 ~ 25 MPa/Class150-2500/2.0-42.0 MPa working temperature - 29 ~ + 550 , material is usually: cast steel, WCB. Cast iron HT200, HT250, QT350, QT450, alloy steel WC6, WC9, CN7M stainless steel have CF8 (M), CF3 (M). Forged steel A105, F304 (L), F316L etc. Of the petroleum, chemical, pharmaceutical, chemical fertilizer, power industry, such as the pipeline under various working conditions, suitable medium such as water, oil, steam, acid medium.One-way flow of media is to control the pipe valve, to prevent the backflow medium pipeline.