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进口金属密封蝶阀美国阿卡迪亚品牌

进口金属密封蝶阀It is characterized by:

It includes a valve body, a downstream end cover, an adjusting ring, an adjusting device, an O-ring, a valve body sealing ring, a butterfly plate sealing ring, a sealing ring pressing plate and a butterfly plate. The water inlet end of the valve body is provided with a downstream end cover, the inner side of the downstream end cover is provided with an adjusting ring, an adjusting device is arranged between the adjusting ring and the downstream end cover, the inner side of the adjusting ring is provided with an O-ring and a valve body sealing ring, and the butterfly plate is arranged in the valve body, The butterfly plate sealing ring is connected around the butterfly plate through the sealing ring pressing plate, and the hardness between the butterfly plate sealing ring and the valve body sealing ring is different. The sealing surface is not easy to scratch and can be sealed in both directions to meet the sealing requirements of different water heads.

进口金属密封蝶阀characteristic:

Metal sealed butterfly valves have been widely used in many industries, such as long-distance water transmission pipelines, thermal power, urban water supply and drainage, etc. the existing metal sealed butterfly valves have the following problems in the use process: 1. The sealing surface is easy to scratch, affecting the sealing effect and service life; 2. The butterfly valve in the connecting pipeline is difficult to meet the working condition of two-way sealing; 3. As the valve with the same nominal pressure has a wide range of working heads, it is difficult for ordinary metal sealed butterfly valves to meet the sealing requirements of different heads.

Principle:

The hardness of the sealing surface of the butterfly plate sealing ring is different from that of the valve body sealing ring. It is not easy to scratch the sealing surface during frequent closing, so as to prolong the service life of the sealing ring and the maintenance cycle; When the valve is closed, the sealing ring of the valve body is closer to the conical surface of the butterfly plate sealing ring under the action of the positive working head, so as to achieve the sealing effect; When the valve is closed, the sealing ring of the valve body is separated from the conical surface of the sealing ring of the butterfly plate under the action of the reverse working water head, and the sealing purpose is achieved under the blocking of the adjusting ring and the extrusion of the O-ring, so as to realize the two-way sealing; Adjust the clearance between the adjusting ring and the valve body sealing ring by adjusting the screw, so as to realize the sealing requirements of two-way sealing with the same nominal pressure and different working water heads.

（仅供参考）