The valve body of the slurry valve is divided into left and right parts with a seat between them. The bolt connecting the two parts can be disassembled the valve seat .An anti-washing and anti-corrosion protection plate is set in the cavity of the valve body .At the moment of the valve opened ,the plate can protect valve from washing and corrosion ,and carry out chemical Ni .P plating treatment on the whole valve which makes the surface hardness to HRC60-62.The sealing adopts spherical seal ,the surface of which is line connecting . This can ensure the sealing reliability and avoid scarred .Moreover ,the valve belt has back sealing structure which can protect packing in full-open state. A rotation –resistant device is set up to ensure that the valve stem only has straight line motions ,and non-revolving motions. The driving manners of the valve include hand driving ,electric driving ,pneumatic and gear driving . The valve are mainly use in mining industry .