美国克雷恩弹性阀座蝶阀上采用操作手柄进行启闭和节流控制。这些操作手柄可以用在压力为200 psi、通径DN50～DN600和压力285 psi、通径DN50～DN150蝶阀上进行人工操作。对于通径大于DN200的蝶阀，所需要的操作力矩和阀门内部产生的反作用力可能会超过极限。在这种情况下，为了操作安全，建议采用齿轮执行机构。
　　 Handles are available for on/off and throttling control of Crane resilient seated butterfly valves. These handles can be used for manual actuation of 2" to 12" valves at 200 psi and for 2" to 6" valves at 285 psi. For valves larger than 8", excessive operator effort and extreme handle reaction to internal valve forces are possible. In these cases, a gear operator is recommended for safe operation.

　　特点 Features
　　美国克雷恩手柄结构坚固，非常适用于小型阀门的人工执行机构。DIT手柄上的插销板使得阀门能够在十个位置上锁定；而IOL手柄则可以在任何位置锁定阀门。
　　The rugged construction of Crane handles makes them ideally suited for manually actuating smaller valves. The latch plate permits the valve to be locked in any of the 10 positions on DIT handles or in any position on IOL handles.

　　规格型号Specifications
　　DIT　　　这种手柄能够机械将阀门锁定在0°至90°之间的十个位置上，每个位置间隔10°。
　　DIT/IOL　这种手柄能够将阀门锁定在中间位置（如32° ，68°，等等）上，也能够在0°和90°位置上。
　　DIT Mechanically locks the valve in any of the 10 positions from 0° to 90° in 10° increments
　　DIT/IOL Can hold the valve in intermediate positions (32°, 68°, etc.) and can also be locked in 0° and 90° positions.

　　注意：上列技术数据随时可能更改，恕不另行通知。
　　 NOTE: TECHNICAL DATA SUBJECT TO CHANGE WITHOUT NOTICE.