宝德截止阀00169392

   BURKERT宝德截止阀也叫截门，是使用zui广泛的一种阀门，它之所以广受欢迎，是由于开闭过程中密封面之间摩擦力小，比较耐用，开启高度不大，制造容易，维修方便，不仅适用于中 低压，而且适用于高压。截止阀的闭合原理是，依靠阀杠压力，使阀瓣密封面与阀座密封面紧密贴合，阻止介质流通。截止阀只许介质单向流动，安装时有方向性。截止阀的结构 长度大于闸阀，同时流体阻力大，长期运行时，密封可靠性 不强。
   宝德BURKERT截止阀属于强制密封式阀门，所以在阀门关闭时，必须向阀瓣施加压力，以强制密封面不泄漏。当介质由阀瓣下方进入阀门时，操作力所需要克服的阻力，是阀杆和填料的摩擦力与由介质的压力所产生的推力，关阀门的力比开阀门的力大，所以阀杆的直径要大，否则会发生阀杆顶弯的故障。近年来，从自密封的阀门出现后，截止阀的介质流向就改由阀瓣上方进入阀腔，这时在介质压力作用下，关阀门的力小，而开阀门的力大，阀杆的直径可以相应地减少。

Type Description

The externally piloted globe valve consists of a pneumatically operated piston actuator and a 2/2-way valve body. The actuator is made of PA or, for special operating conditions, PPS. The reliable self-adjusting packing gland provides high sealing integrity. These maintenance-free and robust valves can be retro-fitted with a comprehensive range of accessories for position indication, stroke limitation or manual override.

Compact
Long service life
Robust actuators with modular accessory program
Stainless steel housing with flange, thread and weld end connection
For selecting the correct product please refer to the technical data, images and notes for proper use according to the data sheet.

宝德截止阀00169392