Introduction to the installation steps of stainless steel flange butterfly valve

Everyone knows stainless steel flanges.

Butterfly valve handle, as soon as you hear this name, you may still have a vague mind, but if you recall it carefully, you should also have a rough outline. That's right, the industrial aspect is inseparable from stainless steel flange butterfly valves. It adopts a unique three-eccentric structure, which is widely used in metallurgy, electric power, petrochemical industry and other important construction aspects.

But do you know how to install the stainless steel flange butterfly valve? I'll introduce it to you today, and you should listen carefully.

Stainless steel flange butterfly valve installation steps

1. a valve. When lifting, the rope should not be tied to the handwheel or valve stem to avoid damage to these parts, it should be tied to the flange.

2. Before installation, the valve should be inspected, the specifications and models should be checked, and whether there is any damage, especially for the valve stem. It is also necessary to turn a few times to see if it is crooked, because during transportation, it is most likely to hit the crooked valve stem. Also remove the debris inside the valve.

3. When installing the flange pneumatic valve, pay attention to the symmetrical and uniform tightening of the bolts.

The valve flange and the pipe flange must be parallel and the clearance must be reasonable, so as to avoid excessive pressure and even cracking of the valve. This is especially the case with brittle materials and valves that are not very strong. It must be welded with the pipe.

The valve should be spot welded first, and then the closing part should be fully opened, and then welded to death.

4. When installing the screw valve, the sealing packing should be wrapped on the pipe thread, and do not get into the valve, so as to avoid the accumulation in the valve and affect the flow of the medium.

5. For the pipeline connected to the valve, it must be cleaned. Compressed air can be used to blow away mud and sand, iron oxide filings, welding slag and other debris. These debris are not only easy to scratch the sealing surface of the valve, but also large particles of debris can also block the small valve and make it invalid.

Yantai Ruifeng Metal Products is mainly engaged in the research and development, production and sales of stainless steel valves, stainless steel flange ball valves, stainless steel PPR valves, stainless steel pipe fittings and precision castings.

Advantages of stainless steel flanged butterfly valves

1.It is convenient and fast to open and close, labor-saving, and has low fluid resistance, and can be operated frequently.

2.Simple structure, small size and light weight.

3.Slurry can be transported with minimal liquid accumulation at the pipe opening.

4.At low pressures, a good seal can be achieved.

5.Good regulation performance.

Stainless steel flanged butterfly valve disadvantages

1.Small range of operating pressure and operating temperature.

2.Poor sealing. According to the structural form, butterfly valves can be divided into offset plate type, vertical plate type, inclined plate type and lever type.

The above is the stainless steel flange butterfly valve introduced to you, and the installation steps of the stainless steel flange butterfly valve introduced are relatively simple. Moreover, as long as you follow the introduction and pay attention to some details, you will definitely be able to complete it. Finally, we also introduced the advantages and disadvantages of stainless steel flange butterfly valves, everything has advantages and disadvantages, and you can weigh whether you need this thing in your heart.

Well, that's all for the introduction. Thank you.

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.

Hello,American imported butterfly valve manufacturer - Kornke KNKEGlad for your question.

Kornco imported to clamp butterfly valve.

1. Place the clamp-type butterfly valve between the pre-installed two-piece clamp-clamp butterfly valve special flange, and pay attention to aligning the flange bolt hole with the round hole of the butterfly valve body.

2. Insert the bolt and nut into the flange hole to connect the valve body with the flange, and correct the flatness in the method, but be careful not to tighten the bolt and nut too tightly.

3. Weld the flange to the pipe, and this step should be spot welded.

4. Remove the clamp-type butterfly valve first.

5. Then weld the two flanges completely on the pipe to complete the fixation.

6. After the welding of the flange and the pipeline is cooled, the clamp-type butterfly hail backup valve is installed. At this point, be careful to open the butterfly plate a little.

7. Make a correction to the installation position of the butterfly valve again and tighten the bolts, but be careful not to tighten it too tightly.

8. Open the butterfly plate of the butterfly valve completely to ensure that the butterfly plate of the butterfly valve can be opened and closed freely.

9. Cross the bolts again and tighten them evenly;

10. After the above steps are completed, the opening and closing of the butterfly valve will be tested again, and the shield will ensure that the valve can be opened and closed freely.

Kornke imported flange butterfly valve.

1.During installation, the end face between the butterfly valve body flange and the upper flange of the pipeline should be parallel, and there should be no skewness, otherwise the flange connection may leak due to the bolt tightening.

2.When the flange butterfly valve is installed on the pipeline, gaskets should be added between the flanges at both ends of the pipeline and the flanges of the valve body, but double gaskets cannot be used.

3.When tightening the bolts, it should be carried out symmetrically, and the tightening force of each bolt connected by the flange at both ends should be uniform and consistent.

4.In the installation, the bolt of the positioning hole on the butterfly valve should be installed first, and the position of the butterfly valve should be fixed in the center, in addition, when tightening the flange bolt, it should be tightened symmetrically and alternately, and the bolt should not be tightened separately in turn.

This problem mainly refers to the two forms of butterfly valves, the clamp type and the flange type

The clamp-type butterfly valve (the valve itself cannot be flanged) is to connect the valve between the two pipe flanges with a stud bolt; The clamp-on butterfly valve has a simple structure, small size and light weight, and is composed of only a few parts. Moreover, it only needs to rotate 90° to quickly open and close, which is easy to operate, and the valve has good fluid control characteristics. The picture above below is the manual butterfly valve, and the picture below is the electric butterfly valve

<> flanged butterfly valve is a valve with a flange, and the upper two ends of the valve are connected to the pipe flange with bolts. The sealing surface is wear-resistant, so that the messy section has a long service life. The structure is unique, the operation is flexible, labor-saving, convenient, and not affected by the high and low pressure of the medium.

The picture below shows the manual flanged butterfly valve, and the following picture shows the electric flanged butterfly valve

<>, the specifications of the clamp type and the flange type are the same, but the flange bolts of the clamp butterfly valve are relatively long, and the length is "2 times the flange thickness + valve thickness + 2 nuts thickness", and the clamp valve itself cannot be flanged; As long as the bolts and nuts are disassembled, then the pipes at both ends of the valve will not work properly.

The bolt with the flange type is relatively short, and the length is "2 times the thickness of the flange + 2 nuts", that is, the flange of the valve body and the flange on the pipeline are paired, connected by bolts, and the nut is locked; When the flange bolt nut at one end is removed, it does not affect the normal operation of the pipe at the other end.

Xinte valve network to tell you the installation of telescopic flange butterfly valve:

1. The telescopic flange butterfly valve must be placed flat before installation, do not bump at will, during installation, pull to the installation length, and it is strictly forbidden to disassemble and disassemble the telescopic flange butterfly valve at the pipeline construction site;

2. The telescopic flange butterfly valve butterfly valve can be installed at any position, and when the temperature compensation is used, after the pipeline installation is completed, brackets need to be added at both ends along the axis of the pipeline to prevent the telescopic tube of the telescopic valve from being pulled out, and it is strictly forbidden to remove the bracket during operation; When the length between the pipes exceeds the installation length of the expansion valve, please adjust the pipeline spacing, and do not forcibly pull the expansion valve to avoid damaging the expansion valve;

3. At the same time, the telescopic flange butterfly valve does not do temperature compensation, and only installs, replaces, and repairs the valve when it is convenient, it can be limited by bolts, and the bolt diameter can be according to the diameter of the flange bolt, the strength of the bolt and the test pressure and the tensile force of the pipeline, and the bolt is strictly forbidden to be removed during the operation time;

4. Do not stretch and shorten the telescopic butterfly valve repeatedly on site. When the pipeline is installed, the pipes at both ends of the expansion valve must be concentric, and the two flange surfaces on the pipeline must be parallel;

5. After the telescopic pipe is installed in the valve, the telescopic part of the telescopic valve shall not be installed at the corner of the pipeline or at the end of the pipeline.

Direction.

Butterfly valves can theoretically be installed in any direction, and it is recommended that the valve shaft be placed horizontally so that the bearings at both ends are not at the bottom (below) to prevent sediment from the medium from entering the bearings.

Inlet pipe configuration.

When there is a bend and a T-shaped pipe on the inlet side of the butterfly valve, which causes the fluid to bend and distribute unevenly into the valve, the deflection flow will occur in the pipe, so the generated deflection must be evenly arranged on both sides of the butterfly plate to avoid uneven force on both sides of the butterfly plate and may generate additional moments.

Outlet pipe configuration.

If it is on the pipeline, in order to prevent the valve from the applied shaft direction and bending moment, it is better to set expansion joints on the outlet side of the valve. When the valve is opened and closed, the water pressure of the valve should not be borne by the feet, but through the flange of the valve, and it is better to be borne by the pipeline.

Butterfly valves are generally short-term, and their butterfly plates will extend into adjacent pipes or other components, so care should be taken not to collide and interfere with other parts. Furthermore, it is necessary to prevent the error of the inner diameter of the matching pipe from colliding with the butterfly plate if it is greater than C.

Butterfly valves are used for regulation to regulate flow and pressure. The valve is regulated by the loss of pressure.

For details, please refer to.

The pipe is flanged and then fastened with screws.

？？What do you want to ask? What is the order in which flanged butterfly valves are installed on pipelines?

Or is it installed according to the flow direction? If it is installed in order, it should be installed diagonally. If you ask how to install according to the flow direction, then look at what flow direction the medium in the pipeline is, and then install it according to the specific direction.

It is best to install it vertically or horizontally, and leave a certain amount of space for maintenance, and do not reverse it.