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Ouyan Automation Equipment (Shanghai) Co., Ltd
D943h flange electric butterfly valve
NegotiableUpdate on 02/13
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Overview
After the D943h flange electric butterfly valve is connected and debugged with a regulating electric actuator and a valve stem, electric energy is used as the driving force to drive the hard sealed butterfly valve plate, which operates from 0 to 90; Partial rotational motion. Receive 4-20mA signals from industrial automation control systems to accurately control valve opening, thereby achieving regulation and control of different process parameters such as flow rate, temperature, and pressure.
Product Details
D943h flange electric butterfly valveIt is a high-performance valve widely used in industrial pipelines such as metallurgy, power, petrochemicals, water supply and drainage, and municipal construction, mainly for regulating flow and cutting off fluids.
1、 Structure and Working Principle
Triple eccentric structure: Adopting a triple eccentric sealing structure, the valve seat and butterfly plate have almost no wear, and have a sealing function that becomes tighter as it is closed.
Sealing material: The sealing surfaces of the valve seat and butterfly plate are made of stainless steel with different hardness, which has good corrosion resistance and long service life.
Sealing ring: The sealing ring is made of stainless steel and has the dual advantages of metal hard sealing and elastic sealing. It has excellent sealing performance in both low and high temperature conditions.
Working power supply: AC220VAC 380V, etc.
Input signal: 4~20mA0~10v and other weak electrical signals.
After the adjustment type electric actuator and valve stem are connected and debugged, electric energy is used as the driving force to drive the hard sealed butterfly valve plate to perform a 0-90 ° partial rotary motion.
Receive 4-20mA signals from industrial automation control systems to accurately control valve opening, thereby achieving regulation and control of different process parameters such as flow rate, temperature, and pressure.
The driving forms of hard sealed butterfly valves are not only electric, but also manual, worm gear drive, pneumatic, etc.
The connection forms of valves include flange clamp type, flange connection, and butt welding connection.
2、 D943h flange electric butterfly valve parameters:
Nominal diameter: DN40 to DN1800
Nominal pressure: PN1.6/2.5/4.0Mpa
Installation method: flange type
Rated travel: 90 °
Traffic characteristics: fast opening
Valve body material: cast steel (ZG230~450) stainless steel (304, 316, 316L)
Sealing type: hard seal
Applicable media: water, steam, acid, alkali, salt, air, natural gas, alcohols, oil products, etc
Applicable temperature: -30 ℃~600 ℃
3、 Precautions
Please make sure to connect the power phase sequence correctly to avoid damage to the valve or actuator.
Manual operation is prohibited when powered on.
When used outdoors, add a protective cover to the electric actuator to prevent aging.
After opening the cover, tighten the screws tightly to prevent water or dust from entering the interior of the electric actuator.
Please confirm if the input voltage and wiring contacts are correct.
Overloading the use of electric actuators is prohibited.
4、 Sealing performance
D943H flange electric butterfly valveThe sealing ring is usually made of stainless steel, which has the dual advantages of metal hard sealing and elastic sealing. This design enables the valve to maintain excellent sealing performance under both low and high temperature conditions, with the characteristics of corrosion resistance and long service life. For large-sized butterfly plates, the sealing surface is welded with cobalt based hard alloy, further improving the wear resistance of the sealing surface.
5、 Characteristics and advantages
Bidirectional sealing function: This valve has a bidirectional sealing function, which is not limited by the flow direction of the medium or the spatial position during installation, and can be installed in any direction.
High strength butterfly plate: The large-sized butterfly plate adopts a frame structure, with high strength, large overcurrent area, and low flow resistance.
Wear resistant sealing surface: The butterfly plate sealing surface is made of welded cobalt based hard alloy, which is wear-resistant and has a long service life.
Multi station drive device: The electric drive device can be installed in multiple stations (rotating 90 ° or 180 °) for easy user use.
6、 Structural features:
1. Under high temperature and high pressure conditions, it still has stable sealing performance, and its special sealing system can ensure high sealing performance in various temperature ranges from ultra-low temperature to ultra-high temperature.
2. The three-dimensional eccentric sealing system, combined with human optimized design, reduces the opening resistance of the valve. The sealing surface of the butterfly plate is a conical shape that protrudes upwards. When opened, all points on the circumferential surface of the butterfly plate simultaneously detach from the sealing ring, making it difficult for solid objects to accumulate on the sealing surface. The valve closing process is completed by the elastic compression of the sealing ring,.
There is no jamming phenomenon between the butterfly plate and the sealing ring.
The sealing performance of the valve is not affected by temperature changes.
5. The valve stem shaft diameter seal adopts graphite compression formed sealing ring, which ensures zero leakage in summary. The metal seal, combined with zero leakage before, during, and after a fire, is an essential fire safety type.
7、 Application areas:
High temperature or unclean medium process fields such as food, beverages, pharmaceuticals, petrochemicals, power plants, steel mills, and industrial environmental water treatment.
