BX43W two pass heat insulation cock valve advantages are as follows: 1, suitable for regular operation, open and close quickly, lightweight. 2, fluid resistance is small. 3, simple structure, relatively small size, light weight, easy maintenance. 4, good sealing performance of 5, not limited by the direction of installation, the flow of media can be arbitrary. 6, no vibration, low noise. Plug in the form of the structure can be divided into tight plug valves, self styled plug valves, plug valves and grease packing plug valves four. According to the form of sub channels can be divided into straight through, three - and four - - three.