聚四氟、橡膠密封蝶型控制閥
PTFE Rubber seated butterfly valve
1、閥體性能和特點
固定式球面吻合密封結構，密封性能良好。
密封可調節補償四次，利于補償修補、產品使用壽命延長。
偏心結構，啟閉輕松自如，雙向密封。
V型接疊軸向填料，達到防腐自激A級密封。
比普通閘閥等平均體積小75%，重量輕70%，價格低50%左右
Valve Structure feature
With the fixed spherical surface seal structure, the sealing performance is good.
With 4 times of seal adjusting, the service life is 4 times
long compared with that of general gate valve, stop valve, ball valve, etc.
Easy to open and close by means of the eccentric structure.
V-type axial contact packing realizes a Grade A corrosive resistant seal.
nbsp;In average, 75% smaller in volume, 70% lighter in weight and 50% lower in price than general gate valves, etc.
2、聚四氟密封結構
普通蝶閥的密封機構是靠蝶板的外緣擠壓橡膠或聚四氟閥座來實現彈性密封，這種結構摩擦力矩大，蝶板與閥座經常擠壓會造成閥門密封面疲勞皺折、磨損和撕裂，從而加速泄漏，減短使用壽命，使用范圍受到很大的限制。
本蝶閥可在工作壓力1.0MPa~4.0MPa、使用溫度-29~150℃的情況下正常工作。本密封結構是采用蝶板的球弧面與閥座的球弧面吻合。當蝶板受壓越大，其密封性能越佳（密封原理和止回閥相似）。閥座密封材料采用聚四氟乙烯或四氟填充，它與金屬蝶板球弧面的摩擦系數很小，僅有0.07，同時還解決了耐溫、耐腐、耐老化的難題，從而提高工作壓力，延長了使用壽命，擴大使用范圍。
PTFE Seal structure
The traditional butterfly valves achieve their sealing by excessively pressing the disc edge onto the internal elastic rubber or PTFE seat ring, but their frictional torque force is large and the seal faces can easily get fatigue, wear or crack resulting a sooner leakage, shorter life and narrower application range.
Our new valve can work well under a pressure of PN1.0~4.0MPa and at a temperature of -29~150℃. The more the pressure on the disc, the better the sealing (same as that in a check valve). The seal material of the seat ring is PTFE or TFE, which has a small frictional coefficient (only 0.07) with the metal disc’s convex face and has eliminated the problems regarding temperature, corrosion and ageing, bringing an increased working pressure, a longer service life and a broader application range .
3、偏心橡膠法蘭蝶型控制閥
本蝶閥廣泛用于石油、化工、冶金、電力、市政工程等行業，在系統中起截止及調節作用；
本閥門具有體積小、重量輕、維護方便等優點；
本閥門采用雙偏心密封結構，密封效果好，使用壽命長；
本閥門采用“T”形斷面橡膠密封圈，調節范圍廣；
橡膠密封圈安裝在蝶板上，無須拆卸閥門即可更換密封圈；
調整密封圈的押緊程度，可以獲得最佳密封效果。
This kind of valve is widely used in oil, chemistry, metallurgy, electric power, civicism construction.
Small cubage, light and repair conveniently.
Double eccentricity, sealing is good, long service life.
“T” type plastic seal ring and the modulation range is wide.
The seal ring is fixed on the disc; you can change it without stripping the valve.
Adjusting the seal ring you can get the best seal.
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