The two-way high temperature and high pressure hard sealing high-performance butterfly valve realizes no sliding friction and jamming between the sealing ring of the butterfly plate and the sealing surface of the valve seat. The pressure angle on the sealing surface is greater than the friction angle. The design of "radial dynamic balance sealing system" is adopted, which makes the opening resistance of the butterfly plate very low. During the opening and closing process, the sealing surface of the butterfly plate can be completed quickly and instantaneously at all points along the 360 ° circumference, with point-by-point contact and point-by-point separation. Open the seal to separate, quickly and accurately realize the sealing action of automatic matching of closed contact.

調節型多層次·全金屬硬密封蝶閥由于密封面采用多重密封和整體全金屬密封，經過高精度機械加工成橢圓形截面密封環，它與閥座金屬密封面組成密封副。這種密封結構，在高壓工況下不產生塑性變形，在高溫或低溫工況下，不存在沖壓應力、焊接應力、彈性退火或咬壞脆裂現象，徹底解決了傳統蝶閥密封結構不合理引起泄漏的弊病、大大提高了閥門密封可靠性。我們設計的整體全金屬密封型式在400℃~850℃超高溫工況下、在產生強力水刀的工況下，優點就異常突出，不變形，密封面不被割切，同樣保持良好的密封。經實驗測定調節型硬密封蝶閥開啟扭矩為傳統結構蝶閥的1/3左右，使用壽命是傳統硬密封蝶閥的5~8倍。

Because the sealing surface of the adjustable multi-level and all metal hard sealing butterfly valve adopts multiple seals and overall all metal seals, it is machined into an oval section sealing ring with high precision, which forms a sealing pair with the metal sealing surface of the valve seat. This sealing structure does not produce plastic deformation under high pressure conditions, and there is no stamping stress, welding stress, elastic annealing or bite embrittlement under high or low temperature conditions. It completely solves the disadvantages of leakage caused by unreasonable sealing structure of traditional butterfly valve and greatly improves the sealing reliability of the valve. The overall all metal seal type designed by us has outstanding advantages under the ultra-high temperature working condition of 400 ℃ ~ 850 ℃ and the working condition of generating strong water knife. It does not deform, the sealing surface is not cut, and it also maintains a good seal. According to the experimental measurement, the opening torque of the regulating hard seal butterfly valve is about 1 / 3 of that of the traditional butterfly valve, and the service life is 5 ~ 8 times that of the traditional hard seal butterfly valve.

雙向高溫高壓硬密封蝶閥適用范圍：

Application scope of bidirectional high temperature and high pressure hard seal butterfly valve:

雙向高溫高壓硬密封蝶閥適用于高、中、低壓，高溫、低溫的管路中作閉路密封裝置、節流裝置和調節裝置。廣泛適用于石油、化工、冶金、礦山、電力、能源、交通、農田、水力、環保、建筑、醫藥、生物等行業。特別適用密封性要求較嚴格的工況，如煤氣管道上，也適用水、蒸氣、油品、空氣、塵氣、硝酸等腐蝕性介質。 使用溫度-196℃~850℃，工作壓力PN0.6--10Mpa或150—160磅級。本閥完全可以取代笨重，價格高的閘閥、截止閥、球閥、節流閥，并作為以國代進產品。

Two way high temperature and high pressure hard sealing butterfly valve is suitable for closed-circuit sealing device, throttling device and regulating device in high, medium and low pressure, high and low temperature pipelines. It is widely used in petroleum, chemical industry, metallurgy, mining, electric power, energy, transportation, farmland, water conservancy, environmental protection, construction, medicine, biology and other industries. It is especially suitable for working conditions with strict sealing requirements, such as gas pipeline, as well as corrosive media such as water, steam, oil, air, dust gas and nitric acid. The service temperature is - 196 ℃ ~ 850 ℃, and the working pressure is pn0.6-10mpa or 150-160lb. The valve can completely replace the bulky and expensive gate valve, globe valve, ball valve and throttle valve, and can be used as a national substitute product.

雙向高溫高壓硬密封蝶閥適用標準：

Applicable standards of bidirectional high temperature and high pressure hard seal butterfly valve:

GB標準蝶閥設計制造驗收按GB12238-89；JB/T8527-1997的規定。結構長度按GB12221-89的規定，雙法蘭連接按短系列制造，對夾式連接DN40~65、DN1400~2000按長系列，DN80~600按中系列，DN700~1200按短系列制造，（其中≥4.0Mpa引用MSS SP-68標準）。對焊式按法蘭長系列。法蘭連接尺寸按GB/T9113.1-2000、GB/T9113.2-2000標準及GB9113.8-1988標準。閥門檢驗與試驗按GB/T13927的規定。 美標磅級蝶閥執行標準： 設計制造驗收按API609凸耳和平板式蝶閥的規定。

GB standard butterfly valve shall be designed, manufactured and accepted according to gb12238-89; JB / t8527-1997. The structural length shall comply with the provisions of gb12221-89, the double flange connection shall be manufactured according to the short series, the wafer connection Dn40 ~ 65 and dn1400 ~ 2000 shall be manufactured according to the long series, DN80 ~ 600 shall be manufactured according to the medium series, and DN700 ~ 1200 shall be manufactured according to the short series (MSS sp-68 standard shall be cited for ≥ 4.0Mpa). Butt welding type according to flange length series. Flange connection dimensions shall comply with GB / t9113.1-2000, GB / t9113.2-2000 and gb9113.8-1988 standards. The inspection and test of valves shall comply with the provisions of GB / t13927. Executive standard of American Standard pound butterfly valve: the design, manufacture and acceptance shall be in accordance with the provisions of API609 lug and flat butterfly valve.

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