Stainless steel flange butterfly valve products comply with the national standards JB/T8527-97 (metal hard seal butterfly valve), FB/T13927-92 (general valve pressure test) standards and other relevant standards of valves. Plywood seals are sealed against metal. In addition to manual, the driving forms of hard seal butterfly valves are: electric, worm gear drive, pneumatic, etc. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, and the rotation angle is between 0°~90°, and when the rotation reaches 90°, the valve is in a fully open state.
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The body and seat of the flanged elastic metal hard seal butterfly valve are conjoined components, and the surface layer of the seat seal is welded with temperature-resistant and corrosion-resistant alloy materials. The multi-layer soft-stacked sealing ring is fixed on the valve plate, this butterfly valve has high temperature resistance compared with the traditional butterfly valve, light operation, no friction in opening and closing, and compensates for the seal with the increase of the torque of the transmission mechanism when closing, which improves the sealing performance of the butterfly valve and the advantages of prolonging the service life. The drive modes of metal hard seal butterfly valve mainly include manual, turbine, electric, pneumatic, hydraulic, etc.
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The body and seat of the flanged elastic metal hard seal butterfly valve are conjoined components, and the surface layer of the seat seal is welded with temperature-resistant and corrosion-resistant alloy materials. The multi-layer soft-stacked sealing ring is fixed on the valve plate, this butterfly valve has high temperature resistance compared with the traditional butterfly valve, light operation, no friction in opening and closing, and compensates for the seal with the increase of the torque of the transmission mechanism when closing, which improves the sealing performance of the butterfly valve and the advantages of prolonging the service life. The drive modes of metal hard seal butterfly valve mainly include manual, turbine, electric, pneumatic, hydraulic, etc.
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Double eccentric butterfly valve, also known as high-performance butterfly valve, is a new generation of gas butterfly valve developed and designed on the basis of absorbing advanced technology at home and abroad. The valve shaft adopts double eccentric structure, which has the sealing function of tightening the more close, the sealing is reliable, the sealing ring is installed on the butterfly plate, the sealing interference can be adjusted, effectively ensuring the sealing interference, and the sealing ring can be replaced without disassembly. It is widely used in metallurgy, building materials, chemical and other industries to regulate and throttle gas, combustible gas and other gas media.
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The D671X pneumatic butterfly valve has a simple structure, a small flow resistance coefficient, and a straight flow characteristic, which will not retain impurities. And it is light in weight, easy to install, and has a small driving torque. It is composed of a rubber sealed butterfly valve and a carbon steel or stainless steel valve plate and stem. It is suitable for regulating the flow and intercepting the medium on the water supply and drainage and gas pipelines with a temperature of ≤ 120°C, such as food, medicine, chemical industry, petroleum, electric power, light textile, papermaking, etc.
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D673H pneumatic pneumatic butterfly valve is widely used in power station heating system and catalytic cracking main fan pipe system and steel, metallurgy, chemical and other industrial systems, as well as environmental protection, water treatment, high-rise building water supply and drainage pipelines to cut off or adjust the flow left.
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The pneumatic centerline butterfly valve is composed of a centerline butterfly valve and a pneumatic actuator. The midline soft seal butterfly valve is a conventional butterfly valve preferred for pipelines, which has a simple structure, small flow resistance coefficient, and the flow characteristics tend to be straight, and will not retain debris. And it has the advantages of light weight, easy installation and small driving torque. This kind of valve can be used not only for cutting off the medium, but also for adjusting the flow of the medium. According to the user's requirements, the drive device can be manual, electric, pneumatic and other methods. The selection of parts of different materials and the use of sealing rings of different materials can adapt to different media and working conditions, so that the cost and performance can achieve the effect.
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Multi-level hard seal butterfly valves are widely used in pipelines of corrosive media such as metallurgy, electric power, petroleum, chemical industry, air, gas, combustible gas, and water supply and drainage. Drive mode: electric clamp-on hard seal butterfly valve, pneumatic clamp-on hard seal butterfly valve, worm gear clamp-on hard seal butterfly valve, manual clamp-on hard seal butterfly valve.
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As a component used to realize the on-off and flow control of pipeline system, butterfly valve has been widely used in many fields such as petroleum, chemical industry, metallurgy, hydropower, etc. In the well-known butterfly valve technology, its sealing form is mostly a sealing structure, and the sealing materials are rubber, PTFE, etc. Due to the limitation of structural characteristics, it is not suitable for high temperature resistance, high pressure resistance, corrosion resistance, wear resistance and other industries.
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Hydraulic soft seal butterfly valve and hydraulic centerline butterfly valve have the function of switching and regulating fluids, and are widely used in various industrial fluid controls. And compared with traditional gate valves, globe valves and ball valves, it is light in weight and low in cost. With the rapid development of various artificial rubber industries, soft seal elastic valve seats can be used not only in the traditional water treatment industry, but also in various modern chemical industries. The centerline butterfly valve is concentric and complies with API609 standards.
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Our company's butt-welded two-way pressure butterfly valve not only adopts the conventional three-eccentric structure, but also combines the movable seat principle of the fixed ball valve, which more effectively guarantees the sealing performance when the reverse pressure is bearing, and truly achieves 100% two-way pressure.
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As a component used to realize the on-off and flow control of pipeline system, telescopic butterfly valve has been widely used in many fields such as petroleum, chemical industry, metallurgy, hydropower, etc. The butterfly plate of the worm gear drive telescopic butterfly valve is installed in the diameter direction of the pipe. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, and the rotation angle is between 0°~90°, and when the rotation reaches 90°, the valve is in a fully open state. This valve is generally installed horizontally.
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