1：小型輕便，容易拆裝及維修，并可以在任意位置安裝:                                       2：結構簡單，緊湊，90度回轉開啟迅速。                                                       3：操作扭矩小，省力輕巧。                                                                        4：流量特性趨于直線，調節性能好。                                                            5：啟閉試驗次數多達數萬次，壽命長。                                                          6：達到完全密封，氣體試驗泄漏為零。                                                           7：更換零件材質，配對，可使用多種介質。