截止阀的启闭件是塞形的阀瓣，密封面呈平面或锥面，阀瓣沿流体的中心线作直线运动。阀杆的运动形式，有升降杆式（阀杆升降，手轮不升降），也有升降旋转杆式（手轮与阀杆一起旋转升降，螺母设在阀体上）。截止阀只适用于全开和全关，不允许作调节和节流。主要尺寸、规格和重量2.5MPaDNLDD1D2bn-φdHD0重量Weight凸面法兰RFJ41HJ41YJ41WJ41FJ41N2525P25R25I10130906040164-141981204.915130956545164-142181205.3201501057555164-142581407.0251601158565164-142751607.43218013510078184-182801808.34020014511085184-1833020012.650230160125100204-183502401665290180145120228-184002802580310195160135228-1835528030100350230190160248-2341532034.8125400270220188288-2546036089.5150480300250218308-25510400992006003603102783412-257104001812506224253703323612-307864504453006984854303904016-30925500651)