1, using two parts-type stem without pin connection, simple structure, compact, maintenance, demolition is very convenient (available on-site removable); disc plate has an automatic right in the function (from top to bottom, left and right), achieved a disc plate with the valve seat with a small amount of interference.
2, the tongue-slot seat, ensuring valve, valve seat, the precise connection between the disc plate, while you can easily replace the seat.
3, using the world’s advanced spherical seal pair, seal more reliable. Because it is spherical sealing valve in the open and close smoothly when excessive, so to reduce friction and lower torque, you can use low-power drives, thus reducing the user cost. While increasing the service life of the valve seat (which is common centerline valve 3-4 times).
4, the valve seat flange sealing surface with large broad-brimmed, large arc structure, so that the valve can meet the set of well-formed or welded flange connection request, suitable for use with any standard method Lan connection.
5, stem axial positioning device, using two pads plus a card off the ring and spring ring structure methods. This could effectively prevent the stem has no intention of being demolished, at the same time can also carry a certain degree of axial force to prevent the stem weight passed to the butterfly plate.
6, stem from a two-way sealing ring role, namely, to prevent foreign material intrusion, while preventing outflow of medium.
7, bushings not only stem from the role of supporting the same time, open and close torque can be reduced. There are two kinds of sleeve to choose from, namely: lubricating bronze, PTFE.
8, due to its alternative common valve seat of the back, increasing the overall strength of the valve so as to achieve common center line butterfly valve can not be achieved nominal pressure of 20 kg.