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采用的是上下分段軸，閥板的中間部位沒有高高凸起的軸梁，因而減少了閥板開啟后在通道中間的阻擋面積。此軸比一般閥軸稍粗，耐壓力更強，閥板與軸的連接更穩固。閥座采用的靠背硫化橡膠的技術，當過于干燥的氣體和粉體時不易損壞閥座。

Adopt the top and bottom section shaft. The middle parts of the valve plate have no raised highbeam of the axis and thus reduce the block area in the middle of channel after opening the valveplate. The shaft is a bit thicker than general valve shaft, and has stronger resistance to pressureThe connection of valve plate and shaft is more stable, The seat uses seat back with vulcanizedrubber technology. in the case of too dry gas and powder, it is not easy to damage the seat.