ksb凱士比ACTAIR C2/C4/C5/C8/C12/C20/C30氣動蝶閥在供水、水處理、污水和灌溉等領域的管路流體關斷和流量調節的問題；KSB ACTAIR C型氣動執行器為雙活塞齒輪齒條式結構，嚙合精確，效率高，輸出扭矩穩定。缸體材質為鋁合金或不銹鋼。氣動執行器底部軸裝配孔符合ISO5211標準，氣源孔、輸出軸的頂部和頂部的安裝孔符合 NAMUR 標準，相同規格有雙作用式、單作用式(彈簧復位)，可根據閥門需要選擇方向，順時針或逆時針旋轉。根據用戶需要安裝電磁閥、定位器、限位開關及手動操作裝置。

ksb凱士比蝶閥設計規格：
■半凸緣式閥體（T2）：DN40～600。 
■全凸緣式凸面閥體（T4）：DN40~600。 
■彈性膠套：通過額外的橡膠作用于閥軸流道部分,利用閥體和蝶板的擠壓形成緊栓效果的閥軸端密封。
■機加工球面的蝶板能保證上下游流道的密封。
■可以拆卸下游管道,閥門關閉作為管道盲板。
■面對面尺寸標準根據 ISO5752 系列20和EN558 系列20。 
■執行機構連接平臺符合 ISO5211 標準。
■閥門標識符合 EN19 標準。
■根據 EN12266-1/泄漏等級 A 和 ISO5208 等級 A，閥門在流道雙方向關斷有良好的密封效果(無肉眼可視泄漏）
ksb Kesby butterfly valve design specifications:
■ Semi-flanged valve body (T2): DN40 ～ 600.
■ Full flange convex valve body (T4): DN40 ~ 600.
■ Elastic rubber sleeve: through extra rubber acting on the valve shaft flow channel part, the valve shaft end seal of the plug effect is formed by the extrusion of the valve body and the butterfly plate.
■ Butterfly plate with machined spherical surface can guarantee the sealing of upstream and downstream flow channels.
■ The downstream pipeline can be disassembled, and the valve is closed as a pipeline blind plate.
■ Face-to-face dimensions are based on ISO5752 series 20 and EN558 series 20.
■ Actuator connection platform conforms to ISO5211 standard.
■ Valve identification conforms to EN19 standard.
■ According to EN12266-1 / leakage level A and ISO5208 level A, the valve has a good sealing effect when the flow path is closed in both directions (no visible leakage)