Plug valve is the indispensable component which connects high-pressure manifold during the working of well cementing and fracturing are being operating in petroleum and mine field, it is also applied to the control of similar high-pressure liquid.The product has the features:compact structure, easy maintenance, small torque, rapid open.labor-saving operation. it is the ideal valve of well cementing and fracturing manifold at present. Plug valve mainly consists of valve body hand wheel.plunger and other parts. The outlet and inlet of valve use 1502 union to connect (we can also produce according to the customers' demand k the sea is attained by the combination of lining.plunger as well as the sealing inserted in encircle of lining. The seal by the combination of lining and metallic plunger has the features: high accuracy of combination and reliable sealing.Remark: it is easy to open and close the valve under the pressure of 15000psi.