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Bundor - Butterfly, Gate, Check, Ball, Globe Valve Manufacturer, Supplier & Distributor
Manifestations and causes of valve leakage in power plants
1.Leakage of valve packing. During the operation of power plant valves, there will be a certain degree of transfer between the packing and the valve stem, or relative movement will be achieved under the action of force. Over time, the valve will become lo
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Common factors causing internal leakage of valves in pipelines
The main reasons for internal leakage are that the valve cannot be fully closed and the sealing surface is damaged during pipeline construction,according to the site construction, it is related to the following factors:
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Overhaul and maintenance of check valve in power plant
The internal leakage of the check valve affects the normal operation of the system and poses a threat to equipment safety to a certain extent.In order to ensure the normal operation of the check valve, it should be regularly inspected and maintained.For e
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Measures to prevent internal leakage of ball valve
As far as the internal leakage of the valve is concerned, its root cause is related to production, transportation and installation. Therefore, the anti-seepage strategy should cover every step.
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Measures for Improvement of Electric Valves
1.Improve the quality of valve designers.If you want to improve the quality of electric valves and reduce the probability of failure, you should first improve the quality of designers to make them realize that if the electric valves have problems, they wi
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Reasons for corrosion of sealing surface of globe valve in seawater process
There are many reasons for corrosion of the sealing surface of the globe valve,for example, cavitation, fluid erosion containing impurities, insufficient hardness of valve disc and valve seat materials, poor medium corrosion resistance of materials used,
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Structural principle and application analysis of butterfly valve
Butterfly valve is a kind of regulating valve with round disc or disc as the closing part, which is mainly composed of valve body, valve stem, butterfly plate and sealing ring.The valve body is cylindrical, with short axial length and built-in butterfly p
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The application value of check valve in gas engineering design
First, the check valve will improve the efficiency of the project.Whether it is a lift check valve or a swing check valve, their structures are relatively small.In gas engineering, check valve should be located in the position of pipeline. If its structur
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The selection of butterfly valve equipment in urban water supply
The models and marks of butterfly valves vary from manufacturer to manufacturer. Different models of butterfly valves have their own progressiveness.However, regardless of the size of the butterfly valve and the manufacturer, its construction principle is
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Key points of valve selection in chemical engineering design
Generally speaking, one of the tasks of chemical pipeline design is the reasonable selection of valves.Reasonable valve selection can guarantee the benefit of subsequent production and operation.The following aspects are generally considered for the selec
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Differences between rising stem gate valve and non rising stem gate valve
The driving mode of rising stem gate valve is different from non rising stem gate valve. The rising stem gate valve is driven by the handwheel to rotate the nut in place, and the valve stem rises and falls in a straight line to complete the opening and cl
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Notes for the installation of ventilation butterfly valve
The installation position of the ventilation butterfly valve in the pipe network and the pipe network layout also affect the use of the valve,for pipes with large smoke and dust, a closed funnel shall be designed at the open end of the valve or at the con
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Difference between electric fluorine lined butterfly valve and electric hard seal butterfly valve
Electric butterfly valve is one of the most commonly used valves in industrial pipelines in recent years,in addition to normal opening and closing, it can also be used to adjust and control the pressure, flow, temperature and other parameters of various w
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Difference between electric hard seal ball valve and electric soft seal ball valve
There are many types of ball valves. The corresponding working conditions are different according to the different structure, connection methods and valve body materials. However, among all types of ball valves, the sealing forms can only be divided into
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The leakage reasons of valve sealing surface
Valve is one of the most widely used control components in the fluid system, which can be used to switch or control the flow direction and regulation. In terms of the simplest cut-off function, the function of the valve seal in the machinery is to prevent
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The function and working principle of check valve
The function of check valve：
The check valve is an automatic opening and closing valve that does not require manpower or other actions,it relies on the flow of the pipeline medium itself to open or close the valve, which is mainly used to prevent the rev
Preservation methods of idle valve to prevent rust and damage
1.Regular maintenance
Valves that have been idle for a long time shall be inspected and maintained regularly to prevent corrosion and damage.For valves that have been idle for a long time, they can only be used after passing the pressure test together wi
Description and classification of valve connection modes
Description and classification of valve connection modes：
Nowadays, the application scope of valves is more and more extensive, and corresponding valves should be used in different environments.The connection between valve and pipeline or equipment is di
Routine maintenance and repair methods of pneumatic valves
Pneumatic valve is a device that operates valve opening and closing through compressed air,it only needs air supply to work,and the switch speed is very fast, which saves human resources and time to a large extent.Not only that, but also remote centralize
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Reasons and treatment methods for valve not being closed tightly
In the process of using the valve, there are often some problems that are puzzling, such as the valve is not tightly closed, what should we do? Under normal circumstances,if the valve is not closed tightly, check to see if the valve is closed in place,if
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The working principle of butterfly valve
Butterfly valve is a valve that opens and closes according to turn the stem while driving the disc rotation,in the cylindrical channel of the butterfly valve body, the disc type butterfly plate rotates around the axis, mainly rotating the disc plate 90° t
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How to determine whether a valve is leaking inside or outside？
During the use of the valve,we often encounter a variety of failures, the leakage of the valve is one of the most common failures, and the leakage of the valve is generally divided into internal leakage and external leakage. So, what is the difference bet
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The installation instructions of pneumatic butterfly valve
Whether the installation of pneumatic butterfly valve is good will affect the efficiency of the equipment.And the maintenance of pneumatic butterfly valve is also related to the performance of the equipment.Improper installation or lack of maintenance wil
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The difference and comparison of bellows globe valve and ordinary globe valve
Bellows globe valve is also called bellows seal globe valve,a metal barrier is formed between the fluid medium and the atmosphere, ensure zero leakage of the stem.Compared with the ordinary globe valve has the following advantages:
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The selection and application of electric globe valve
Once the electric globe valve is in the open state, there is no contact between its seat and disc sealing surface, so its sealing surface mechanical wear is small.Since the seats and discs of most electric globe valves are relatively easy to repair or rep
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