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進(jìn)口氣動(dòng)球閥特點(diǎn)及用途

Features and uses of imported pneumatic ball valves

進(jìn)口氣動(dòng)球閥主要用于截?cái)嗷蚪油ü苈分械慕橘|(zhì)，亦可用用于流體的調(diào)節(jié)與控制，它與其它閥類相比，具有以下一些優(yōu)點(diǎn)。

The imported pneumatic ball valve is mainly used to cut off or connect the medium in the pipeline, and it can also be used for the regulation and control of fluid. Compared with other valves, it has the following advantages.

1、流體阻力小、球閥是所有閥類中流體阻力最小的一種，即使是縮徑球閥，其流體阻力也相當(dāng)小。

1, the fluid resistance is small, the ball valve is the least fluid resistance in all types of valves, even if the ball valve, its fluid resistance is very small.

2、止推軸承減小閥桿磨擦力矩，可使閥桿長(zhǎng)期操作平穩(wěn)靈活。

2, the thrust bearing reduces the friction torque of the stem, which can make the valve stem operate smoothly and flexibly.

3、閥座密封性能好，采用聚四氟乙烯等彈性材料制成的密封圈，結(jié)構(gòu)易于密封，而且球閥的閥封能力隨著介質(zhì)壓力的增高而增大。

3, the valve seat seal performance is good, uses the polytetrafluoroethylene and other elastic materials to make the sealing ring, the structure is easy to seal, and the ball valve sealing ability increases as the medium pressure increases.

4、閥桿密封可靠，由于閥桿只作彷轉(zhuǎn)動(dòng)運(yùn)而不做升降運(yùn)動(dòng)，閥桿的填料密封不易破壞，且密封能力隨著介質(zhì)的壓力增高而增大。

4, the valve stem seal is reliable, because the stem only for imitation rotation transported without movement, stem packing seal is not easy to damage, and sealing ability increased with the increase of the pressure medium.

5、由于聚四氟乙烯等材料具有良好的自潤(rùn)滑性，與球體的磨擦損失小，故球閥的使用壽命長(zhǎng)。

5. As the material of polytetrafluoroethylene has good self lubrication and the friction loss of the ball is small, the service life of the ball valve is long.

6、下裝式閥桿和閥桿頭部凸階防止閥桿噴出，如火災(zāi)造成閥桿密封破壞，凸階與閥體間還可形成金屬接觸，確保閥桿密封。

6, downloading the stem and the stem head convex order to prevent the stem spray, such as stem seal damage caused by fire, convex order and the body can be formed between the metal contact, to ensure that the valve stem seals.

7、 防靜電功能：在球體、閥桿、閥體之間設(shè)置彈簧，能將開關(guān)過(guò)程產(chǎn)生的靜電導(dǎo)出。

7. Antistatic function: the spring is set between the ball, the valve stem and the valve body, which can produce the static electricity produced by the switch process. 

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