本蝶閥閥座與閥板是由全PTFE制作而成，既具有普通蝶閥的機械強度，又能發揮PTFE的耐 強化學介質特性。采用雙段軸，上下分段的技術。不適用于有顆粒和溫度偏高的工藝介質中。 The seat and valve plate of butterfly valve are made of PTFE. They have the mechanical strength of common butterfly valve, and can play the PTFE properties of resistance to strong chemical mediator. Adopt double period of shaft, and up and down segmentation technology. Do not apply to the technical medium with particles and high temperature.