Can DN1000 electric butterfly valve be manual

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, Su Yan, 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.

This can be said by Denso with a handwheel.

Hello, manual butterfly valve is a commonly used fluid control device, which is suitable for flow control of various media. Ordinary flange is a common connection method, usually used for low-pressure, low-temperature, general medium pipe connection. For manual butterfly valves below DN100, if the medium temperature, pressure, flow rate and other comic parameters are within the range of the bridge-fitting finger of the ordinary flange, then it is okay to use the ordinary flange to be sensitive to the hole, but the following points need to be noted:

1.Confirm that the standard and size of the flange match to ensure the robustness and tightness of the connection. 2.

Confirm that the flange and butterfly valve are made of compatible materials to avoid leakage or damage caused by materials that are not resistant to corrosion or adapt to the medium. 3.Confirm whether the rated pressure of the flange and butterfly valve are consistent to ensure safe and reliable use.

In summary, there are many factors that need to be considered when using ordinary flanges to connect manual butterfly valves, and if you are unsure whether it is suitable or not, it is recommended to consult a professional technician or use a special connection method.

The shape is roughly what the picture looks like above, and the specific dimensions are as follows.

dn：200 d：320 d1：

280 l：152 h：960 h1：

352 h2：480 b：22 n-d：

The flange connection size can be modified according to the customer's site or requirements.

Stem diameter: for multi-turn open-rod valves. It cannot be assembled into an electric valve.

Therefore, if the maximum stem diameter allowed for the electric butterfly valve device cannot pass through the stem of the equipped valve. The inner diameter of the hollow output shaft of the electric device must be larger than the outer diameter of the stem of the open rod valve. For the partial rotary valve and the dark rod valve in the multi-turn valve, although there is no need to consider the passage of the valve stem diameter, the diameter of the valve stem and the size of the keyway should also be fully considered when selecting, so that it can work normally after assembly.

Operating torque: The operating torque is the most important parameter for selecting the valve electric device. The movement of the electric butterfly valve can be controlled by the amount of stroke, torque or axial thrust.

Because the working characteristics and utilization rate of the valve electric device depend on the type of valve, the working specification of the device and the position of the valve on the pipeline or equipment, the valve electric butterfly valve device is an indispensable equipment to realize the valve program control, automatic control and remote control. Therefore, the correct selection of the valve actuator is essential to prevent overload (the operating torque is higher than the control torque). In general, the basis for the correct selection of a valve electric butterfly valve device.

The output torque of the electric device shall be multiple of the maximum torque of the valve operation.

Electric butterfly valve operating thrust: There are two main structures of the valve electric device: one is not equipped with a thrust plate. The output torque is converted into output thrust by the stem nut in the thrust plate. Direct output torque; The other is to configure a thrust disc.

Number of rotation turns of the output shaft: The number of rotations of the output shaft of the valve electric device is related to the nominal diameter of the valve, the pitch of the valve stem and the number of threaded heads. h is the opening height of the valve, which should be calculated according to m=hzs (m is the total number of rotations that the electric device should meet.)

S is the thread pitch of the valve stem transmission, and Z is the number of thread heads of the valve stem.

1.Under high temperature and high pressure conditions, it still has stable sealing performance. Its special sealing system guarantees high sealing performance in all temperature ranges, from cryogenic to ultra-high temperatures.

2.The three-dimensional eccentric sealing system coupled with the optimized design makes the valve open resistance is small. The sealing surface of the butterfly plate is a conical shape that protrudes upwards, and each point on the circumferential surface of the butterfly plate is separated from the sealing ring at the same time when it is opened, and the solid matter is not easy to accumulate on the sealing surface.

The valve closing process is done by the elastic compression of the sealing ring, 3There is no phase jamming between the butterfly plate and the sealing ring.

4.The sealing performance of the valve is not affected by temperature changes.

5.The stem bore seal is pressed into graphite to shape the seal. In summary, zero leakage is ensured, and the metal seal is zero leakage before, during, and after the fire, so it is an intrinsic fire safety type.

The D941W electric ventilation butterfly valve produced by Shanghai Yiling is composed of YL type quarter-turn electric actuator or multi-turn electric equipment and ventilation butterfly valve, and is used in conjunction with the electric unit combination instrument. The electric ventilation butterfly valve has the advantages of simple structure, large caliber, light weight and convenient operation. Electric ventilation butterfly valves are widely used in metallurgy, power stations, petroleum, chemical and other industries.

It is suitable for industrial, metallurgical, flue gas dust removal, environmental protection and other pipelines for ventilation and medium flow.

Electric butterfly valve parameters: electric butterfly valve**Electric butterfly valve manufacturers.

Performance: light weight, low cost, small torque;

Advanced pinless connection technology, simple and compact structure, more convenient maintenance;

The sealing pair has an automatic centering function, which can reduce the operating torque and make the sealing performance more reliable;

The valve seat and valve plate can be made of a variety of materials according to the needs, which can meet the needs of different industries and mines, with strong corrosion resistance, good sealing and long service life;

The surface of the valve is sprayed with plastic coating, which improves the anti-corrosion performance of the product and makes the appearance beautiful.

What are the performance of DN150 electric butterfly valve?

DN150 - on behalf of the valve through the cong socks imitation warp 150mm electric - on behalf of the drive mode electronics.

Butterfly valve - represents the valve category butterfly permeable valve.

The performance of the valve is determined according to the valve type, the medium used, the temperature and the environment.