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.

调节型多层次·全金属硬密封蝶阀由于密封面采用多重密封和整体全金属密封，经过高精度机械加工成椭圆形截面密封环，它与阀座金属密封面组成密封副。这种密封结构，在高压工况下不产生塑性变形，在高温或低温工况下，不存在冲压应力、焊接应力、弹性退火或咬坏脆裂现象，彻底了传统蝶阀密封结构不合理引起泄漏的弊病、大大提高了阀门密封可靠性。我们设计的整体全金属密封型式在400℃~850℃超高温工况下、在产生强力水刀的工况下，优点就异常突出，不变形，密封面不被割切，同样保持良好的密封。经实验测定调节型硬密封蝶阀开启扭矩为传统结构蝶阀的1/3左右，使用寿命是传统硬密封蝶阀的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.

双向高温高压硬密封蝶阀适用范围：

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

双向高温高压硬密封蝶阀适用于高、中、低压，高温、低温的管路中作闭路密封装置、节流装置和调节装置。广泛适用于石油、化工、冶金、矿山、电力、能源、交通、农田、水力、、建筑、医药、生物等行业。特别适用密封性要求较严格的工况，如煤气管道上，也适用水、蒸气、油品、空气、尘气、硝酸等腐蚀性介质。 使用温度-196℃~850℃，工作压力PN0.6--10Mpa或150—160磅级。本阀完全可以取代笨重，高的闸阀、截止阀、球阀、节流阀，并作为以国代进产品。

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.

双向高温高压硬密封蝶阀适用标准：

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

GB标准蝶阀设计制造验收按GB12238-89；JB/T8527-1997的规定。结构长度按GB12221-89的规定，双法兰连接按短系列制造，对夹式连接DN40~65、DN1400~2000按长系列，DN80~600按中系列，DN700~1200按短系列制造，（其中≥4.0Mpa引用MSS SP-68标准）。对焊式按法兰长系列。法兰连接尺寸按GB/T9113.1-2000、GB/T9113.2-2000标准及GB9113.8-1988标准。阀门检验与试验按GB/T13927的规定。 美标磅级蝶阀执行标准： 设计制造验收按API609凸耳和平板式蝶阀的规定。

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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