三通抗生素截止閥是關(guān)閉件（閥瓣）沿閥座中心線移動的閥門。
在管路中主要作切斷用。截止閥有以下優(yōu)點：

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．  通常只有一個密封面，制造工藝好，便于維修。

三通抗生素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：

截止閥閥桿的螺紋在閥體的外面。其優(yōu)點是閥桿不受介質(zhì)侵蝕，便于潤滑，此種結(jié)構(gòu)采用比較普遍。

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。

The three-way antibiotic stop valve is a valve in which the closing part (disc) moves along the center line of the valve seat.

The three-way antibiotic stop valve is mainly used for cutting off in the pipeline. The globe valve has the following advantages:

   1. In the process of opening and closing, the friction 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 the maintenance is easy.

The three-way antibiotic stop valve is commonly used, but due to the large opening and closing torque and the long structure length, the general nominal diameter is limited to DN≤200mm.

The fluid resistance loss of the shut-off valve is relatively large. This limits the wider use of the shut-off valve.

   There are many types of shut-off valves, which can be divided according to the position of the thread on the stem:

   1. Three-way antibiotic stop valve The thread of the stop valve stem is on the outside of the valve body. The advantage is that the valve stem is not corroded by the medium and is convenient for lubrication. This kind of structure is more common.

   2. Three-way antibiotic stop valve The thread of the valve stem of the stop valve is in the valve body. The stem thread of this structure is in direct contact with the medium, which is susceptible to corrosion and cannot be lubricated. This structure is used in places with small diameters and low temperatures.

   According to the channel direction of the stop valve, it can be divided into: straight-through stop valve, angle stop valve and three-way stop valve. The latter two stop valves are usually used to change the flow direction of the medium and distribute the medium.

產(chǎn)品圖片：三通抗生素截止閥，不銹鋼三通 截 止閥

安徽利勒潔凈設(shè)備科技有限公司是國內(nèi)專業(yè)生產(chǎn)制造潔凈衛(wèi)生級閥門管件，主要應(yīng)用于食品機械行業(yè)、制藥機械行業(yè)、乳制品行業(yè)、釀酒飲料行業(yè)以及精細化工等行業(yè)高精度衛(wèi)生級流體設(shè)備的專業(yè)生產(chǎn)廠家，產(chǎn)品規(guī)格齊全；產(chǎn)品主要有：三通抗生素截止閥，不銹鋼三通 截 止閥

無菌隔膜閥，卡箍直通隔膜閥，三通隔膜閥，法蘭隔膜閥，氣動隔膜閥，U型隔膜閥，罐底隔膜閥 ；

無菌球閥，卡箍直通球閥，螺紋球閥，焊接球閥，氣動球閥，法蘭球閥，電動球閥；

衛(wèi)生級蝶閥，焊接蝶閥，卡箍直通蝶閥，螺紋蝶閥，法蘭蝶閥，氣動蝶閥，電動蝶閥；

不銹鋼衛(wèi)生泵，不銹鋼衛(wèi)生級離心泵，不銹鋼衛(wèi)生自吸泵，不銹鋼酒精防爆泵，衛(wèi)生奶泵，衛(wèi)生飲料泵；

止回閥，過濾器、呼吸器、換向閥、防混閥、安全閥；

衛(wèi)生級不銹鋼管件，焊接彎頭，快裝彎頭，不銹鋼三通，快裝三通，四通，真空彎頭，大小頭；

罐頂組件系列，不銹鋼儲罐，發(fā)酵罐，不銹鋼衛(wèi)生級人孔，清洗球/器，視鏡燈，排氣閥等其它非標產(chǎn)品生產(chǎn)加工；

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