The working principle of the clamp on electric soft seal butterfly valve

The clamp-type electric soft seal butterfly valve is a pneumatic valve that uses a circular butterfly plate that rotates with the valve to open and close, so as to realize the opening action, and the pneumatic valve is mainly used as a cut-off valve, and can also be designed to have the function of adjusting or section valve and adjusting.

The main advantages of the clamp-type electric soft seal butterfly valve, simple structure, small size, light weight, low cost, pneumatic hard seal butterfly valve is particularly significant, installed in the high-altitude dark channel, easy to operate through the two-position five-way solenoid valve control, and can also adjust the flow medium. The fluid resistance is small, the effective flow area of the pneumatic disc valve of medium and large caliber is large, the opening and closing is rapid and labor-saving, and the opening and closing can be completed by rotating the disc wrench at an angle of 90 angles, because the medium force of the disc wrench on both sides of the rotating shaft is close to equal, and the torque direction is opposite, so the opening and closing torque is small, and a good seal can be achieved under low pressure, and the sealing materials of the disc valve are nitrile rubber, fluorine rubber, edible rubber, and PTFE lining so the sealing performance is good. Among them, the hard seal disc valve is a soft and hard laminated metal sheet, which has the advantages of metal hard seal and elastic seal, and has excellent sealing performance at low temperatures.

The working principle of the clamp-type electric soft seal butterfly valve structure is applicable to environmental analysis.

The butterfly plate of the clamp-on electric soft-seal 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° and 90°, and when the rotation reaches 90°, the valve is fully open.

The electric soft seal butterfly valve has a simple structure, small size and light weight, and is composed of only a few parts. Moreover, it only needs to be rotated 90° to open and close quickly, which is easy to operate, and the electric valve has good fluid control characteristics. When the butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the pressure drop generated by the valve is very small, so it has good flow control characteristics.

There are two types of sealing types of butterfly valves: elastic seal and metal seal. Elastomeric seal valves, the sealing ring can be embedded in the valve body or attached to the perimeter of the butterfly plate.

Valves with metal seals generally last longer than valves with elastomeric seals, but it is difficult to achieve a complete seal. Metal seals can accommodate higher operating temperatures, while elastomeric seals have the disadvantage of being limited by temperature.

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Chaoda, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

The unique design of three-way eccentricity enables frictionless transmission between sealing surfaces, prolonging the service life of the valve.

An elastic seal is created by torque.

The clever wedge-shaped design allows the valve to have an automatic sealing function that closes tighter and tighter, and there is compensating and zero leakage between the sealing surfaces.

Small size, light weight, light operation, easy to install.

Pneumatic and electric devices can be configured according to user requirements to meet the needs of remote control and program control.

The material of the replacement parts can be applied to various media, and the lining can be protected against corrosion (lining F46, GXPP, PO, etc.).

Continuous structure diversification Butt clamp, flange, butt welding.

The electric hard seal butterfly valve is mainly composed of an electric actuator and a triple eccentric metal hard seal butterfly valve, which is controlled by point and pressure, and can be divided into explosion-proof type, adjustment type, feedback type, etc.

1. Three-eccentric sealing structure, the valve seat and butterfly plate are almost wear-free, and it has the sealing function of tightening the closer;

2. The sealing ring is made of stainless steel, which has the dual advantages of metal hard sealing and elastic sealing, and has excellent sealing performance, corrosion resistance and long service life in the case of low and high temperatures.

Electric Hard Seal Butterfly Valve Applications:

It is widely used in metallurgy with a medium temperature of 425.

On industrial pipelines such as electric power, petrochemical industry, water supply and drainage and municipal construction, it is used to regulate flow and interrupt fluid.

This article introduces in detail the characteristics of electric hard seal butterfly valves, as well as the difference and application of electric hard seal butterfly valves and electric soft seal butterfly valves, and the existence of electric hard seal butterfly valves.

Thank you for the data support of the professional knowledge of the valve problem of the American Mighty Shield Vton Valve, if you think the answer is helpful to you, please raise your noble hand and give the American Mighty Ton Vton Valve a like.

If the imported electric butterfly valve is divided according to the sealing material, it can be divided into soft seal and hard seal, and the butterfly valve and electric actuator constitute the imported electric hard seal butterfly valve and the imported electric soft seal butterfly valve; What is the difference between the two, and how to distinguish and select applications. This article analyzes it.

The obvious difference between the hard seal and the soft seal of the electric butterfly valve is that the performance between the two is just opposite, the hard seal electric butterfly valve has poor sealing performance, but high temperature resistance, wear resistance, and good mechanical properties, while the soft seal electric butterfly valve is just the opposite of the former in terms of performance.

The soft sealing seat is made of non-metallic materials with certain strength, hardness and temperature resistance, with good sealing performance and zero leakage, but the life and adaptability to temperature are relatively poor. Hard seals are made of metal and have relatively poor sealing performance, although some manufacturers claim to have zero leakage. Soft seals can not meet the process requirements for some corrosive materials, and hard seals can solve them!

These two seals can complement each other, and the soft seal is relatively good in terms of tightness, but now the tightness of the hard seal can also meet the corresponding requirements. The advantage of soft sealing is good sealing performance, and the disadvantage is that it is easy to age, wear and tear, and has a short service life. Hard seals have a long service life, but the sealing performance is relatively worse than that of soft seals.

The main differences in its structure are as follows:

1. Structural differences: most of the soft-sealed electric butterfly valves are center-line types, and most of them are soft-sealed butterfly valves; Most of the imported electric hard seal butterfly valves are single eccentric, double eccentric and triple eccentric.

2. Temperature resistance: soft seal electric butterfly valve is used in room temperature environment. Hard-sealed electric butterfly valves can be used in low-temperature, normal-temperature, high-temperature and other environments.

3. Pressure: soft seal low pressure - normal pressure, electric soft seal butterfly valve is generally used; Hard seals can also be used for medium and high pressures. Electric hard-sealed butterfly valves can generally be used for:

4. Sealing performance: the sealing performance of the soft seal electric butterfly valve and the triple eccentric hard seal electric butterfly valve is relatively good, and the triple eccentric electric butterfly valve can maintain a good seal in the high pressure and high temperature environment.

In view of the above characteristics, the hard seal electric butterfly valve, as a component used to realize the on-off and flow control of the pipeline system, has been widely used in many fields such as petroleum, chemical industry, metallurgy, hydropower, etc. The soft-sealed electric butterfly valve is suitable for two-way opening and closing and adjustment of ventilation and dust removal pipelines, water treatment, light industry, petroleum, chemical and other industries. Hard-sealed electric butterfly valves are mostly used in heating, gas supply, gas, oil, acid and alkali environments.

1. This valve adopts a three-fair sealing structure, and the valve seat and butterfly plate are simply wear-free, and there is a tighter and tighter sealing performance.

2. The gasket is made of stainless steel, and the two advantages of metal and inertial sealing, regardless of high temperature and low temperature, have the characteristics of sealing power and combustion energy, erosion resistance, and long service life.

3. The disc plate is made of gas welded cemented carbide, which is wear-resistant and has a long service life.

4. The large-size butterfly plate has high strength, large overflow area, and small flow resistance.

5. The pneumatic clamp-on hard seal butterfly valve has two-way sealing performance, which can be installed in any position without medium flow direction or time and status reaction.

6. The drive can be installed with multi-station (90° or 180°) device, which is convenient for users to use.

Hello, the sealing characteristics of pneumatic clamp-on hard seal butterfly valve are:

Adopting a three-eccentric sealing structure, the valve seat and butterfly plate are almost wear-free, and it has the sealing function of tightening the closer and tighter.

The sealing ring is made of stainless steel, which has the dual advantages of metal hard seal and elastic seal, and has excellent sealing performance, corrosion resistance and long service life in the case of low and high temperature.

The sealing surface of the disc plate is made of surfacing cobalt-based hard table metal, and the sealing surface is resistant to hole search and wear, and has a long service life.

This valve has a two-way sealing function, and when installed, Yuntong is not limited by the flow direction of the medium, nor is it quietly affected by the spatial position, and can be installed in any direction.

Shanghai Guardian Valve tells you that the scope of application of electric air slow leakage to the butterfly valve:

It can be widely used in the automatic control system of industrial processes in food, environmental protection, light industry, petroleum, chemical industry, teaching equipment, papermaking, electric power and other industries.

Structural characteristics of electric clamp butterfly valve:

1. The design is novel, reasonable, the structure is unique, the weight is light, and the opening and closing are fast.

2. The operating torque is small, the operation is convenient, and the effort is savvy.

3. It can be installed in any position, and it is easy to maintain.

4. The seals can be replaced, and the sealing performance is reliable to achieve zero leakage of two-way sealing.

5. The sealing material is resistant to aging, corrosion and has a long service life.

Pneumatic Flange Hard Seal Butterfly Valve Product Introduction:

The pneumatic flange hard seal butterfly valve adopts a precision elastic sealing ring and a three-eccentric multi-level metal hard seal structure, which is widely used in industrial pipelines such as metallurgy, electric power, petrochemical industry, water supply and drainage and municipal construction with a medium temperature of 425°C, and is used to regulate the flow rate and carry the fluid as a break. The valve adopts three eccentric structure, the valve seat and the plate sealing surface are made of different hardness and stainless steel, with good corrosion resistance, long service life, the valve is used two-way sealing function, the product meets the GB T13927-92 valve pressure test standard.

Pneumatic Flange Hard Seal Butterfly Valve Features:

1. This valve adopts a three-eccentric sealing structure, and the valve seat and butterfly plate are almost wear-free, and it has the sealing function of tightening the more you look at it.

2. The sealing ring is made of stainless steel, which has the dual advantages of metal hard sealing and elastic sealing, and has excellent sealing performance, corrosion resistance and long service life in the case of low and high temperatures.

3. The sealing surface of the disc plate is made of surfacing cobalt-based hard table metal, which is wear-resistant and has a long service life.

4. The large-size butterfly plate adopts quilting structure, which has high strength, large overflow area and small flow resistance.

5. This valve has a two-way sealing function, which is not limited by the flow direction of the medium during installation, nor is it affected by the spatial position, and can be installed in any direction.

6. The drive device can be installed in multiple stations (rotation 90° or 180°), which is convenient for users to use.

Pneumatic actuators are the same, hard seal butterfly valve is metal and metal contact, soft seal is metal and rubber contact, the difference between them in use is that hard seal butterfly valve can withstand high temperature or bottom temperature, but soft seal can only be at room temperature.

The sealing form of butterfly valve is mainly divided into two sealing forms, one is hard sealing, which is metal-to-metal contact. The second is soft sealing, that is, the metal is in contact with rubber or rubber in contact with rubber.

Hard seals are metal seals, and soft seals are generally made of rubber, PTF and other materials. According to the parameters of the process equipment, the appropriate sealing surface is selected, such as: temperature, pressure, medium, etc., as well as the high level of hard sealing. Thank you!

Pneumatic valves are divided into pneumatic clamp-type hard-sealed butterfly valves and soft-sealed butterfly valves, and what is the difference between pneumatic clamp-type hard-sealed butterfly valves and soft-sealed butterfly valves, let's analyze them in order to understand and select;

Pneumatic hard seal butterfly valve refers to the sealing pair is called when both sides of the sealing pair are made of metal materials or other hard materials"Hard sealed"。The sealing performance of the butterfly valve hard seal is poor, but it is resistant to high temperature, high pressure, wear and tear, and has good mechanical properties. For example, the commonly used Vton hard-sealed butterfly valve can be used in high-temperature occasions with a temperature of 650.

Such as: steel + steel; Steel + Copper; steel + graphite; steel + alloy steel; (The steel here may also be cast iron, cast steel, alloy steel may also be hardfacing, sprayed alloy).

Pneumatic soft seal butterfly valve: one side of the sealing pair is made of metal, and the other side is an elastic non-metallic material, generally rubber and tetrafluorine, which is called"Soft seal".The sealing performance of this seal is better, such as the commonly used Weidun VTON's imported soft seal butterfly valve, no matter used in water, oil, gas and other media, it can achieve zero leakage and good sealing; However, it is not resistant to high temperature, easy to wear, and has poor mechanical properties.

Such as: steel + rubber; steel + PTFE;

The soft sealing seat is made of non-metallic materials with certain strength, hardness and temperature resistance, with good sealing performance, and the hard seal of Weidun VTON can reach zero leakage, but the life and adaptability to temperature are relatively poor. Hard seals are made of metal, and the sealing performance is relatively poor, although some valve manufacturers claim to be able to achieve zero leakage butterfly valves, but in reality it is difficult to achieve. Soft sealing can not meet the process requirements of some corrosive materials, and hard seal disc valve can solve it!

These two seals can complement each other, and the soft seal is relatively good in terms of tightness, but now the tightness of the hard seal can also meet the corresponding requirements. The advantage of the soft seal disc valve is that it has good sealing performance, and the disadvantage is that it is easy to age, wear and tear, and has a short service life. Hard-seated butterfly valves have a long service life, but the tightness is relatively worse than that of soft-sealed butterfly valves.

The difference between the structure of pneumatic hard seal butterfly valve and pneumatic soft seal butterfly valve:

1. Structural differences: soft seal butterfly valves are mostly midline butterfly valves, and hard seals are mostly single eccentric butterfly valves, double eccentric butterfly valves, and triple eccentric butterfly valves.

2. Temperature resistance: soft seal butterfly valve is used in room temperature environment. Hard seals can be used in low temperature, normal temperature, high temperature and other environments.

3. Pressure: soft seal butterfly valve low pressure-normal pressure, hard seal can also be used under medium and high pressure conditions.

4. Sealing performance: soft seal butterfly valve and triple eccentric hard seal butterfly valve have good sealing performance, and triple eccentric butterfly valve can maintain good sealing in high pressure and high temperature environment.

Selection of soft seal butterfly valve and hard seal butterfly valve.

In view of the above characteristics, VTON soft seal butterfly valve is suitable for two-way opening and closing and adjustment of ventilation and dust removal pipelines with high sealing requirements and low temperature and pressure, water treatment, light industry, petroleum, chemical and other industries. Weidun VTON hard seal butterfly valve is mostly used in the occasion of relatively low sealing requirements, but the medium temperature is high, the pressure is high, and the wear is relatively strong, heating, gas supply, and gas, oil, acid and alkali and other environments.