Cast steel butterfly valve is a kind of butterfly valve, the valve body material is mainly cast steel.Concrete is divided into the following material: cast steel, carbon steel, 20 # steel, A182 steel, forging steel A105 F11 making, chrome molybdenum steel WC6 WC9, stainless steel, 304, 316, etc.

Hard seal butterfly valve structure features:
    (1) three unique to the eccentricity of the design between the sealing surface friction drive, prolong the service life of the valve.
    (2) generated by the torque of the elastic seal.
    (3) clever wedge design allows for automatic sealing valve has closed more and more tightly, compensatory, zero leakage between the sealing surface.
    (4) small volume, light weight, light operation and ease of installation.
    (5) according to user requirements with pneumatic, electric devices, meet the needs of the remote control and programmed control.
    (6)replacement parts material can be applied to all kinds of medium, and can be carried out lining anticorrosive (lining F46, GXPP, PO, etc.).

All landowners continuous structure diversification: the clamp, flange, butt welding.

Keywords:butterfly valve ,knife gate valve,ball valve,globe valve,slurry gate valve