Two-way Cast Steel Plug Valves is closed parts or plunger-shaped rotary valve is rotated 90 degrees so that passage through the channel port valve plug and valve port on the same or separate achieve open or close a valve. The shape of the valve plug can plug into a cylindrical or conical. In a cylindrical plug, the channel is generally rectangular; in tapered plug in a trapezoidal channel. These shapes make the structure becomes lighter plug, but it also had some losses. Plug the most suitable as well as streaming media turned off and apply, but in accordance with the applicable properties and resistance to erosion of the sealing surface, and sometimes can also be used for throttling. Since the movement of the sealing surface between the plug with a wiping action, and in the fully open completely prevent contact with the flowing medium, so it usually also be used for the dielectric strip suspended particles. Another
important characteristic of the plug when it is easy to adapt to multi-channel structure such that a valve can obtain two, three, or even four different flow paths. This simplifies the design of piping systems, reducing the amount of valves and equipment needed some connection accessories.
