Q691N卡套气动球阀也称防爆紧急切断阀主要是针对加气站以及各种易燃易爆炸气体，使用介质为天然气或者氢能源而开发研究的特殊高压产品，该阀通过24V或者220V防爆电磁阀远程控制阀门工作。整个站区的安全。主体采用高压冲击锻打，壳体强化处理，工作压力可在25.0MPa～60.0MPa长期正常使用，试验压力更可达到150.0MPa,密封件均采用全进口美国MTU材料，具有弹性高、手感轻、耐高压、耐腐蚀、抗氧化、密封等优点。球和阀杆都用特殊的热处理工艺，使之刚柔兼之，经久耐磨。Q641N法兰气动球阀目前在加气站的子母站上常用的连接方式有外螺纹焊接式、卡套式、内螺纹式和法兰式。而在这几个连接方式中又以外螺纹焊接式受用户青眯。外螺纹焊接式有别于三块式焊接球阀（Q61型焊接前要先松开4根对夹螺栓，把两端焊好后再装，这样不仅是容易泄漏，就是将来维修更换都不方便）具有安装简单、操作灵活、更换方便等优点。

气动防爆球阀产品概述

气动防爆球阀是一种用于控制流体、具有防爆性能的阀门，适用于易燃易爆场所。以下是其产品概述 ：

 气动防爆球阀工作原理：通过气源对气动执行器施加作用力，推动执行机构转动，带动球体在阀体内旋转，实现流体的控制与切断。当阀门关闭时，球体旋转切断流体通道；开启时，球体旋转至水平位置，流体可自由通过 。

气动防爆球阀结构组成：主要由阀体、球体、阀杆、密封圈、气动执行机构等组成。阀体内部有球形孔道，阀杆连接球体与气动执行机构，密封圈用于密封性能 。

气动防爆球阀产品特点：流体阻力小，是所有阀类中流体阻力很小的一种。止推轴承可减小阀杆摩擦力矩，使阀杆操作平衡灵活。阀座和阀杆密封性能好，密封圈常用聚四氟乙烯等材料，密封能力随介质压力增大而增强，且阀杆只做旋转运动，其填料密封不易破坏 。

气动防爆球阀性能优势：防爆性能好，采用特殊防爆结构设计，能防止火花或静电引发爆炸事故。操作方便，可实现远程和自动控制。耐腐蚀性强，阀体和球体常采用耐腐蚀材料，能适应多种腐蚀介质环境 。

气动防爆球阀应用领域：广泛应用于化工、石油、轻纺、电力、食品制药、制冷、航空、航天、造纸等工业领域，可控制气体、液体、蒸汽、污水和含有纤维的介质等 。

Product Overview of Pneumatic Explosion - proof Ball Valve

Pneumatic explosion - proof ball valve is a kind of valve used to control fluid, with explosion - proof performance, suitable for inflammable explosive places. The product overview is as follows :

 Working Principle: The pneumatic actuator is powered by the air source, which drives the actuator to rotate, then drives the ball to rotate in the valve body, so as to realize the control cut - off of the fluid. When the valve is closed, the ball rotates to cut off the fluid channel; when the valve is opened, the ball rotates to the horizontal position, the fluid can pass freely .

Structural Composition: It is mainly composed of valve body, ball, valve stem, sealing ring, pneumatic actuator, etc. There is a spherical channel inside the valve body. The valve stem connects the ball the pneumatic actuator, the sealing ring is used to ensure the sealing performance .

Product Features: It has a small fluid resistance, which is the smallest among all valve types. The thrust bearing can reduce the friction torque of the valve stem, making the valve stem operate smoothly flexibly. The valve seat valve stem have good sealing performance. The sealing ring is usually made of materials such as PTFE. The sealing ability increases with the increase of the medium pressure, the packing seal of the valve stem is easy to be damaged because the valve stem only rotates without lifting .

Performance Advantages: It has good explosion - proof performance. The special explosion - proof structure design can prevent explosion accidents caused by sparks static electricity. It is easy to operate, can realize remote control automatic control. It has strong corrosion resistance. The valve body ball are often made of corrosion resistant materials, which can adapt to various corrosive medium environments .

Application Fields: It is widely used in chemical, petroleum, textile, electric power, food, pharmaceutical, refrigeration, aerospace, papermaking other industrial fields, can control gases, liquids, steam, sewage media containing fibers