Butterfly valves are suitable for regulating and intercepting the flow of medium in the pipelines of various corrosive and non-corrosive fluid media in the engineering systems of furnace, gas, natural gas, liquefied petroleum gas, city gas, hot and cold air, chemical smelting and power generation and environmental protection.   Butterfly valve is suitable for flow regulation. Since the pressure loss of butterfly valve in the pipeline is relatively large, about three times that of the gate valve, therefore, when selecting the butterfly valve, full consideration should be given to the pipeline system affected by the pressure loss, and the sturdiness of the butterfly plate to withstand the pressure of the pipeline medium when it is closed should also be considered. In addition, it is also necessary to consider the limits of the working temperature of the resilient valve seat material under high temperature.   When its under special working conditions such as throttling adjustment, or requiring strict sealing, or severe wear, or low temperature (cryogenic), it is necessary to use specially designed metal sealed triple or double eccentric butterfly valves with regulating devices.   Concentric butterfly valves are suitable for pipelines that require complete sealing, zero leakage in gas test, high life expectancy and working temperature from -10 to 150℃ for fresh water, sewage, seawater, salt water, steam, natural gas, food, medicine, oil and various acid and alkali and others   Soft seal eccentric butterfly valves are suitable for bi-directional opening and closing and adjustment of pipeline for ventilation and dust removal. Soft seal eccentric butterfly valves are widely used in metallurgy, light industry, electric power, petrochemical system of gas pipeline and waterway, etc.   Metal-to-metal line sealed double eccentric butterfly valves are suitable for urban heating, steam supply, water supply and gas, oil, acid and alkali pipelines, as a regulating and intercepting device.

Triple eccentric hard seal butterfly valve has played a very important role in the petrochemical industry. The triple eccentric hard seal butterfly valve can accurately break off the working condition when the system fails, greatly preventing worse consequences. Secondly, the triple eccentric hard seal butterfly valve is also very easy to operate, and it can also enjoys a strong stability.   The triple eccentric hard seal butterfly valve is designed with the principle of three-dimensional eccentricity, which idealizes the spatial movement trajectory of the sealing surface. And the sealing surfaces are free from friction and interference with each other. Coupled with the proper choice of sealing materials, its sealing performance, corrosion resistance, high temperature resistance and wear resistance of the butterfly valve are firmly guaranteed.   Its main features are as follows.   1、Small opening torque, flexible and convenient, labor-saving and energy-saving. 2、Triple eccentric plate makes the butterfly disc tighter and tighter the more it is closed. Its sealing performance is reliable. 3、Remarkable resistance for high pressure, corrosion and wear; longer service life, etc.

시기 우리는 언급한다 극저온 밸브, 일반적으로 서비스 온도를 나타냅니다. from -46 ° C 받는 사람 -196 ° C, 확장 된 스템 또는 확장 된 보닛. 확장 된 스템 또는 보닛의 장점은 다음과 같습니다. 1. 확장 된 줄기 / 보닛 채우는 상자를 보호 할 수 있습니다 from 낮은 온도와 낮은 누출을 확인하십시오. 여기 2.이 설계는 또한 메인 밸브 부품의 신속한 교체를 용이하게 할 수 있습니다. 당신은 하지 않습니다 밸브 본체를 분해해야하는 경우 부품을 교체하기 위해 덮개를 제거하기 만하면됩니다. 뭐 할 수있다 확장 된 스템 또는 보닛의 단점입니까? 첫째, 설치를위한 더 큰 공간이 필요합니다. 둘째, 액추에이터에 의한 모멘트 또는 부적절한 길이 계산으로 인해 스템 또는 보닛이 쉽게 구부러 지거나 변형됩니다. Dervos 는 중국의 선도적 인 산업용 밸브 제조업체이자 상인으로 극저온 밸브 생산을 전문으로합니다. 외에 드문 조건에서 우리는 또한 다음과 같은 다른 산업용 파이프 라인 밸브를 생산합니다. 트러 니언 장착 볼 밸브, 차단 돼지 밸브 등 on. 받는 사람 업계 최고의 에 대해 자세히 알아보기 제품 문의 오늘.