阀门名称：大口径截止阀

阀门型号：J41W-10PJ41W-16PJ41W-25P J41W-40P J41W-64P

J41W-5KJ41W-10KJ41W-20K J41W-30K

J41W-150LB J41W-300LBJ41W-600LB

大口径截止阀的启闭件是圆柱形的阀瓣，密封面呈平面或锥面，阀瓣沿流体的中心线作直线运动。