设计和结构
Design and Construction

　　美国DeZurik（德朱瑞克）双向刀闸阀的全圆周周长阀座设计结构能够实现任何流向的无气泡密封关闭功能，即便在终端应用场合也是如此。这种阀门适用于造纸、化工和电力行业的隔断和启闭应用场合。这种阀门专用于处理清洁、肮脏、粘性或腐蚀性的气体和干燥物质。
　　The DeZurik Bi-Directional Knife Gate Valve provides a perimeter seat allowing bubble tight shutoff in either direction, even on dead end service. The valve is designed for isolation and on/off applications in the paper, chemical and power industries. It is designed to handle clean, dirty, viscous and corrosive gases and dry materials.

通径范围和压力
Size Range and Pressure

　　美国DeZurik（德朱瑞克）双向刀闸阀通径范围为DN50~DN900。通径DN50~DN600的刀闸阀额定压力为150 psi (1035 kPa)冷水工作压力，而通径DN750~DN900的刀闸阀额定压力为100 psig (690 kPa)冷水工作压力。
　　The DeZurik Bi-Directional Knife Gate Valve comes in sizes 2" - 36" (DN50 - DN900). The 2" - 24" (DN50 - DN600) sizes rated to 150 CWP (1035 kPa) and the 30" - 36" (DN750 - DN900) are rated to 100 psig (690 kPa) CWP.

双向关闭
Bi-Directional Shutoff

　　这种双向刀闸阀在阀门压力等级下，任何方向均可实现气泡级密封关闭功能。不存在推荐流向，也不需要管线压力来实现密封。即使在最低的管线压力下，闸板与阀座之间的配合也能够实现气泡级密封功能。这种阀门能够双向应用，也可以应用在终端场合。
　　The Bi-Directional Knife Gate Valve provides bubble tight shutoff in both directions up to full rating of the valve. There is no recommended flow direction and it does not require line pressure to seal. The interference fit between the gate and seat provides bubble tight shutoff even under the lowest pressure. The valve can be used in either direction on dead end service.