气动球阀Ｑ641Y-16C DN50 具有防火防静电结构
气动球阀Ｑ641Y-16C DN50 具有防火防静电结构
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产品特色
气动球阀Ｑ641Y-16C DN50 具有防火防静电结构
Pneumatic ball valve Q641Y - 16 - c (with fire retardant anti-static structure
Q641F/PPL气动法兰球阀详细资料
气动法兰球阀主要用于截断或接通管路中的介质，可用于流体的调节与控制，它与其它阀类相比，具有以下一些优点。
1，流体阻力小、球阀是所有阀类中流体阻力最小的一种，即使是缩径球阀，其流体阻力也相当小。
2，止推轴承减小阀杆摩擦力矩，可使阀杆长期操作平衡灵活。
3，阀座密封性能好，采用聚四氟乙烯等材料制成的密封圈，结构易于密封，而且球阀的阀封能力随着介质压力的增设而增大。
4，阀杆密封可靠，由于阀杆只作旋转运动而不做升降运动，阀杆的填料密封不易破坏，且密封能力随着介质的压力增设而增大。
5，由于聚四氟乙烯等材料具有良好的自润滑性，与球体的摩擦损失小，帮球阀的使用寿命长。
6，下装式阀杆和阀杆头部凸阶防止阀杆喷出，如火灾造成阀杆密封破坏，凸阶与阀体间还可形成金属接触，确保阀杆密封。
Details Q641F/PPL pneumatic flanged ball valves
Pneumatic flanged ball valves are mainly used for truncated or on line in the medium, can be used for the adjustment and control of the fluid, it compared with other types of valve, has the following several advantages.
1, fluid resistance small, ball valve is the smallest of all valve fluid resistance in the class a, even reducing ball valve, the fluid resistance is small.
2, the thrust bearings reduce stem friction torque, can make the valve stem long flexible operating balance.
3, the seat sealing performance is good, use the materials such as ptfe sealing ring, structure is easy to be sealed, and ball valve valve sealing ability increases with the adding of medium pressure.
4, the valve stem seal and reliable, because the valve rod rotation movement and not only do the lifting movement, the valve stem packing seal is not easy to damage, and sealing ability increase with the pressure increasing and medium.
5, such as ptfe material has good self-lubrication, and small sphere of the friction loss, help ball valve&＃39;s service life is long.
6, bottoms type valve stem and valve stem head convex order to prevent the valve stem, stem seal damage caused by such as fire, convex order between the body and also can form metal contact, to ensure that the valve stem seal.
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