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The electrically actuated butterfly valve is used for on-off control of water and other media compatible with the materials of construction.
A motorized butterfly valve is a type of valve which can be used for isolating or regulating flow. The closing mechanism is the disc, which sits in the center of the valve body. The disc is connected to a handle or actuator via the shaft, which passes from the disc through the top of the valve body.
ZECO motorized butterfly valve is suitable for the occasion of flow regulation. Because the butterfly valve disc and stem components still have the problem of resisting medium flow in the pipeline, the pressure loss of the butterfly valve is still greater than that of the gate valve. Therefore, the influence of pressure loss should be considered when selecting a motorized butterfly valve as the regulating or switching valve. But the structure of the butterfly valve length is short, the overall height will be short many compared to other valves, at the same time open speed by electric, gear or handle faster than many other valve operation, at the same time has good flow control characteristics, so the use of motorized butterfly valve range is very wide, usually as the regulation of motorized valves and motorized switch valve is used in petroleum, chemical industry, power plants, pharmaceutical, shipbuilding, metallurgy, and other industrial areas, at the same time as the pipeline system of the cut-off valve, control valve, and check valve. ZECO, as a professional manufacturer of motorized butterfly valves, usually uses specially designed metal sealed triple eccentric or double eccentric butterfly valves as recommended products for users under special working conditions.
A motorized butterfly valve operates by changing the position of a round disc that is located within a pipeline. The disc is the size of the pipe circumference, which allows it to create a reliable seal during instances when it is necessary to restrict or stop the flow of process media. Motorized butterfly valves are available in a variety of sizes, so any factory will be able to order one that specifically fits and operates within their pipelines. The most common ranges of sizes for butterfly valves and their discs are between a couple of inches and a couple of feet, although larger industrial applications of this particular valve may span quite a bit larger than those typical ranges.
When a motorized butterfly valve disc is in the closed position, the pipeline is completely blocked and flow is stopped. The disc for the valve is attached to the valve shaft, which is then controlled by a motor. When this motor moves the valve to the open position, the disc is parallel to the pipeline and liquids are able to flow past the disc on either side. There is still a drop in flow volume because the disc itself is still present within the pipeline. However, flow is permitted to pass. If flow needs to be throttled, controlled, or regulated for volume as production needs to change, the motor can turn the disc to a position where it is partially open. If a changing amount of process media volume flow is needed for production, the motorized butterfly valve can adjust during the process to supply appropriate amounts of liquid.
Butterfly valves are isolating valves used on water supply networks, in the interconnections of networks, in the factories, in pumping stations, on the general networks, and on the fire protection networks in industrial sites.
No | Part | Material |
1 | Body | ASTM A351 CF8M |
2 | Seal Ring | Graphite + SS316 |
3 | Retainer Flange | ASTM A182 F316 |
4 | Pin | ASTM A276 316 |
5 | Disc | ASTM A351 CF8M |
6 | Stem | ASTM A276 316 |
7 | Stem Packing | Graphite |
8 | Stem Beating | SS316 + PTFE |
9 | Bolt | ASTM A193 B8M |
10 | Nut | ASTM A194 8M |
11 | Yoke | ASTM A216 WCB |
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