米勒衛(wèi)生級不銹鋼排氣抗生素閥門生產(chǎn)廠家

產(chǎn)品：抗生素截止閥丶抗生素截止閥設(shè)備

截止閥在管路中主要作切斷用。有以下優(yōu)點(diǎn)：
    1．  在開閉過程中密封面的摩擦力比閘閥小，耐磨。
    2．  開啟高度小。
    3．  通常只有一個(gè)密封面，制造工藝好，便于維修。
    截止閥使用較為普遍，但由于開閉力矩較大，結(jié)構(gòu)長度較長，一般公稱通徑都限制在DN≤200mm以下。（）

截止閥的流體阻力損失較大。因而限制了截止閥更廣泛的使用。
    截止閥的種類很多，根據(jù)閥桿上螺紋的位置可分：
    一、上螺紋閥桿截止閥
    截止閥閥桿的螺紋在閥體的外面。其優(yōu)點(diǎn)是閥桿不受介質(zhì)侵蝕，便于潤滑，此種結(jié)構(gòu)采用比較普遍。
    二、下螺紋閥桿截止閥
    截止閥閥桿的螺紋在閥體內(nèi)。這種結(jié)構(gòu)閥桿螺紋與介質(zhì)直接接觸，易受侵蝕，并無法潤滑。此種結(jié)構(gòu)用于小口徑和溫度不高的地方。
    根據(jù)截止閥的通道方向，又可分為；直通式截止閥，角式截止閥和三通式截止閥，后兩種截止閥通常做改變介質(zhì)流向和分配介質(zhì)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.

產(chǎn)品圖片：米勒衛(wèi)生級不銹鋼排氣抗生素閥門生產(chǎn)廠家

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