米勒卫生级不锈钢排气抗生素阀门生产厂家
产品：抗生素截止阀丶抗生素截止阀设备
截止阀在管路中主要作切断用。有以下优点：
1． 在开闭过程中密封面的摩擦力比闸阀小，耐磨。
2． 开启高度小。
3． 通常只有一个密封面，制造工艺好，便于维修。
截止阀使用较为普遍，但由于开闭力矩较大，结构长度较长，一般公称通径都限制在DN≤200mm以下。（）
截止阀的流体阻力损失较大。因而限制了截止阀更广泛的使用。
截止阀的种类很多，根据阀杆上螺纹的位置可分：
一、上螺纹阀杆截止阀
截止阀阀杆的螺纹在阀体的外面。其优点是阀杆不受介质侵蚀，便于润滑，此种结构采用比较普遍。
二、下螺纹阀杆截止阀
截止阀阀杆的螺纹在阀体内。这种结构阀杆螺纹与介质直接接触，易受侵蚀，并无法润滑。此种结构用于小口径和温度不高的地方。
根据截止阀的通道方向，又可分为；直通式截止阀，角式截止阀和三通式截止阀，后两种截止阀通常做改变介质流向和分配介质用。
Products: Antibiotic globe valve, antibiotic globe valve equipment
The globe valve is mainly used for cutting off in the pipeline. Has the following advantages:
1. During the opening and closing process, the friction force of the sealing surface is smaller than that of the gate valve, and it is wear-resistant.
2. The opening height is small.
3. Usually there is only one sealing surface, the manufacturing process is good, and it is easy to maintain.
Globe valves are commonly used, but due to the large opening and closing torque and long structure length, the nominal diameter is generally limited to DN≤200mm. ( )
The fluid resistance loss of the globe valve is relatively large. Therefore, the wider use of globe valves is limited.
There are many types of globe valves, which can be divided according to the position of the thread on the valve stem:
1. Upper threaded stem globe valve
The thread of the globe valve stem is on the outside of the valve body. The advantage is that the valve stem is not eroded by the medium and is easy to lubricate. This structure is relatively common.
2. Lower threaded stem globe valve
The thread of the globe valve stem is in the valve body. The stem thread of this structure is in direct contact with the medium, which is easily corroded and cannot be lubricated. This structure is used in places with small diameters and low temperatures.
According to the channel direction of the globe valve, it can be divided into: straight-through globe valve, angle-type globe valve and three-way globe valve. The latter two globe valves are usually used to change the flow direction of the medium and distribute the medium.
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公司简介：
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