Valve Production Industry is in a Favorable Development Opportunity

Now the machinery industry is developing more and more rapidly, as the industry’s valves are no exception, we all know that the valve industry is an important branch of our general machinery. Its products as a key equipment for fluid control is widely used in petroleum, chemical, metallurgy, electricity, urban construction, environmental protection and other industries. At present, the valve production industry is in a very favorable development opportunity.

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The rapid development of the valve industry gradually exposed a lot of problems, and faced with serious challenges, it can be said that opportunities and challenges coexist, achievements and risks with, therefore, actively promote industrial transformation and upgrading, to achieve quality and efficiency breakthrough.

Sanitary valve industry in order to seek greater progress, we must strictly ensure that the valve product safety valve quality, pay attention to the valve process technology improvement and innovation, to produce truly meet customer demand for products. Profoundly analyze the problems and shortcomings in the product, and actively find solutions to the long-term development of the enterprise to prepare.

valve

China’s valve manufacturing industry has been constantly bigger, but the strong road has not yet completed, transformation and upgrading, innovation and excellence is the valve industry bigger and stronger the inevitable choice. Many enterprises have started, entered a comprehensive resource consolidation period, and constantly improve the sector and product categories, give full play to human, material, financial and technological strength and other resources integration advantages, with minimal cost to create the best quality products and services , And constantly promote the adjustment of internal professional structure, to achieve enterprise system and cultural level of improvement, completed by the “can do” to “do” to upgrade and cross.

At present, China’s sanitary ball valve industry are undergoing transformation and upgrading, adjust the product structure, independent innovation, the development of new advantages of intellectual property products, in order to adapt to changes in the market, the supernatural powers, seeking a breakthrough, out of a successful development, In the changing market in the new advantages, and achieved some results. Not only won the market recognition, but also out of the “price war” vicious competition quagmire. Even in the context of the external economic downturn, companies still maintain a strong momentum of steady growth.

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Valve Selection And Examples

The valve is a control component in the fluid delivery system, has many functions such as cut-off, regulation, diversion, prevent backflow, regulator, shunt or overflow relief.

Valves are widely used for fluid control systems, ranging from the simplest sanitary shut-off valves to a variety of valves, used in extremely complex control systems, with a wide variety of specifications. Sanitary valves can be used to control the flow fluids such as air, water, steam, corrosive media, mud, oil, liquid metal and radioactive media. Valves are also divided into cast iron valves, cast steel valves, stainless steel valves, chrome molybdenum steel valves, chrome molybdenum vanadium steel valves, duplex steel valves, plastic valves, non-standard custom valves.
Butterfly Valves
Valve selection steps:
1. According to the pressure of the valve, caliber, the media has been the temperature and the temperature can be selected to adapt to the valve model.
2. Know the way the pipe connection and the caliber of the valve can determine the way the valve is connected.
3. The use of the valve If you know and the conditions of the production process, then you can determine the valve drive device.
4. The general diameter of the valve is the diameter of the pipe, but also according to the pipe diameter to calculate the real use of the valve caliber.
5. To determine the sealing surface of the valve to know what the valve is the medium, temperature and pressure values, the maximum use of the valve body temperature must be greater than the medium temperature.
6. Valve nominal pressure to determine the body according to the material, the media working pressure and temperature.
7. Valve characteristics of the media, working pressure and temperature, you can choose the model and sealing surface.
valve fittings
Valve selection example:
Steam pipe working pressure is 13 kg, the temperature is 350 degrees Celsius, caliber is 100, to choose what kind of valve. From the above known conditions, first determine the material of the valve body, because the steam pressure is 13 kg, the temperature is 350 degrees Celsius, you can choose ductile iron or cast steel. However, from the temperature of 350 degrees Celsius to consider, then the ductile iron is more difficult to choose, so for safety reasons, should use cast steel valves. And then from the pressure to analyze, according to cast steel and long-term pressure temperature, the valve should choose 16 kg or 25 kg is appropriate. Next is the choice of sealing surface, to use stainless steel. And given the valve diameter is 100, diameter is relatively small, so the opening and closing time and torque are not large, then select the manual on it. Generally take the steam pipes are made of seamless steel pipe, and seamless steel pipe are used welding, but in order to make the valve easy to install and repair, it is recommended to use the flange connection.

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Applications and Market Prospects of Stainless Steel Valve

Stainless steel valves are commonly used in chemical applications such as corrosive media, food, pharmaceuticals, oils, liquid metals and radioactive media. The valve ability is relatively limited by many factors.

Sanitary ball valves
Because of its long life, not rust, green and other advantages, stainless steel valves have many industrial applications, so the procurement of stainless steel valves must be required a variety of stainless steel valve production and factory certificate, you can also use the spectrometer for testing, spectrometer due to high precision, is widely used in the precious metals and stainless steel valve detection. The field of application has also been developed rapidly in recent years, some 304,316 L valves are mainly dependent on the equipment testing.

When the valve material such as sanitary ball valve, gate valve, globe valve and check valve are selected according to the nature of the working medium, the influence of the factors such as the concentration, temperature and heat treatment process of the material on the corrosion resistance must be studied at the same time. Good steel is 316L, 904 or titanium valves.

health grade valves
With the petrochemical industry technology and the continuous development of the petrochemical stainless steel valve, the requirements are getting higher and higher, in addition to continue to improve the quality of conventional valves such as J41W stainless steel globe valve, Z41W stainless steel gate valve, especially for corrosive materials Q41F stainless steel ball valves require an increasing amount, some PTA plants, polyester plants and polyester spinning units for chemical fiber production, to strive to develop corrosion-resistant technology, 316L stainless steel sanitary valves are featured with corrosion-resistant, high strength, light, long life and other excellent features.
The society progress of the industry is increasing, the use of stainless steel valve products industry is also increasing, new industries and new products will also slowly replace the cast iron valves, which for the stainless steel valve industry to bring new opportunities for market development prospects.

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The Characteristics of Diaphragm Valve,Ball Valve And Butterfly Valve

The structural characteristics of sanitary diaphragm valve:
The sanitary diaphragm valve is particularly suitable for ultra-pure media to prevent serious pollution, it can be as inert media of viscous liquid, gas. When combined with control equipment, diaphragm valves are a better alternative to other conventional control systems, especially for solid and contaminated inert media.

Diaphragm Valves

What are the characteristics of sanitary ball valves?
The sanitary ball valve is made of SUS304,316L, which can meet the special requirements of various mediums in the food and biopharmaceutical fields. Its smooth, seamless and automatic emptying handicraft fluid passage is also very suitable for the steam cleaning. The processing is in strict accordance with FDA requirements for quality control by using computer three-dimensional design and meeting the manufacturing requirements for the GMP.

Sanitary Ball Valves

The characteristics of sanitary butterfly valves:
Sanitary pneumatic butterfly valve is simple, small size, light weight, small flow resistance, flow coefficient, good sealing performance. Adjustment range of sanitary butterfly valves is the automation control system instrumentation execution unit.

Sanitary Butterfly Valves

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The Development Prospect of High Pressure Valve Industry

The Development Prospect of High Pressure Valve Industry
In China’s current valve market, in addition to low-pressure valve to the international market to accept the level, the high-pressure valve still need to rely on imports. In the macroeconomic continued to be optimistic about the situation, the valve industry, most of the production and sales indicators have maintained a rapid growth, but by the price war, the industry sales revenue and profits fell sharply over the same period last year. With the world economy pick up, China’s import and export of valve products has also increased, but because of high-end technology still have a large gap with foreign manufacturers, compared to the next period of time, product technology will become a control of China’s valve product development bottleneck.

From the product situation, China’s valve industry has been able to produce a dozen categories of products, such as gate valve, globe valve, sanitary ball valve, butterfly valve, safety valve, sanitary check valve, throttle valve, plug valve, Traps, emergency shut-off valve, the maximum temperature is 570 ℃, the lowest is -196 ℃, the maximum pressure is 600MPa, the maximum diameter is 5350 mm. In addition, according to the relevant departments statistics, China’s annual valve market turnover is up to 50 billion yuan, of which more than 100 billion market is occupied by foreign valve enterprises. The sanitary valves are indispensable fluid control equipment for various sectors of the national economy such as oil, chemical industry, power station, long-distance pipeline, shipbuilding, nuclear industry, various low-temperature engineering, aerospace and marine oil production. After years of development, the number of valves in China ranks first in the world, the size of the valve business is about 6,000, of which the annual output value is more than 500 million.

food industry
At present, there are still some problems in China’s valve industry, such as China’s valve enterprises mainly are low-level, small-scale, family-based enterprises. In the product, due to repeated investment, the introduction of technology is not enough, China’s leading enterprises in the valve products is still low-quality mass products. At present, various valves are generally exposed, leakage, the appearance of the quality is not high, short life, the operation is not flexible and the valve electric devices and pneumatic devices are not reliable and other shortcomings, some products are equal to the international level, some high temperature and pressure and key devices on the need for valves still rely on imports.

The industrial structure, the valve industry, industrial chain, as well as the degree of specialization of the industry and foreign enterprises there is a large gap between the domestic valve product quality is low because the rapid expansion of the market, the original state-owned enterprises have Shut down and turn, although a number of township enterprises to develop rapidly, but because of the low starting point of township enterprises, technical strength is very weak, poor equipment, most of the products are imitated production, especially for the low pressure valve for drainage problems Does not affect the future prospects of China’s valve industry. This is mainly due to the support of national policy and the strong demand of the valve products market, especially in several century project “West-East”, “West to East”, “South-North Water Diversion” and other projects need a large number of valve products.

food

In addition, China is facing the arrival of the industrial era, the petrochemical industry, power industry, metallurgical industry, chemical industry and urban construction, such as the use of large valves will enhance the demand for valve products. For example, the power industry, “Eleventh Five-Year” period in the coal-fired units large and medium-sized projects required to predict the total valve: the total demand for valves 153,000 tons, the average annual demand is 30,600 tons; total demand of valve is 3.96 billion yuan. The average annual demand is $ 792 million. In addition, China is gradually becoming the world’s largest processing plant, the valve products processing production is facing greater development space, as long as companies can seize the opportunity to strengthen research and development capabilities, and continuously improve product technology content and product quality.

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Six Solutions to The Leakage of Control Valves

Six solutions to the leakage of the control valve
1) Increasing the sealing grease method
For valves that do not use sealed grease, can increase the sealing grease to improve stem seal performance.

2) Increasing the packing method
In order to improve the sealing performance of the packing on the stem, a method of increasing the packing may be used. Usually using double-layer, multi-layer mixed filler form, simply increase the number, such as 3 to 5, the effect is not obvious.

valve fittings

3) Replace the graphite packing method
Large use of PTFE filler, because of its operating temperature is in the range of -20 ~ +200, when the temperature is in the upper and lower limits, changes in the larger, the seal will be significantly reduced, aging fast, short life. Flexible graphite fillers can overcome these shortcomings and long service life. So some of the factory all the PTFE filler to graphite filler, and even the newly purchased control valve will be one of the PTFE filler into graphite filler after use. But the use of graphite filler hysteresis, and some also have a crawling phenomenon, which must be considered.

Divert Valves

4) Changing the flow direction, set P2 in the stem end method
When the △ P is large, P1 is large, the seal P1 is clearly more difficult than the seal P2.Therefore, can be taken to change the flow direction, P1 in the stem end to P2 at the stem end, which is high pressure, Large sanitary check valves are more effective, such as bellows valves that should normally be considered for sealing P2.

5) Using lens pad sealing method
For the seal of the upper and lower covers, the valve seat and the upper and lower valve body seal. If the plane seal, under high temperature and high pressure, poor sealing, causing leakage, you can use the lens pad seal, can get satisfactory results.

6) Replacing the gasket
So far, most of the gasket is still using asbestos board, at high temperatures, poor sealing performance, life is short, causing leakage. In this case, you can use the winding gasket, “O” ring, now many plants have been used sanitary valves.

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What are the features and advantages of high temperature valves

What are the performance and advantages of high temperature valves?
The performance of the high temperature valve is as follows:
1. High temperature valve quenching is good, can be deep quenching, rather than the surface of the anti-saw-lock surface hardening
2. Less brittleness of tempering
3. High temperature valve processing is good, after processing, it is beautiful
4. Good weldability
5. The impact and performance of the absorption is good, the hammer hit up with a sense of bounce, can not be violent and damage.

Sanitary-Sampling-Valves-161114

The advantages of high temperature valves:
(1). Good workability
(2). Impact absorption performance is good
(3). Welding easy
Element symbol: Cr-Mo

valves

A type of high temperature valves
Stainless steel ball valve belongs to a kind of sanitary valves, according to the distinction and selection of the sphere, some ball system can be operated easily, the line for publicity can open and close conveniently.

Sanitary-Elbows-161207

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Classification and Performance of High Temperature Valves

Classification and performance of high temperature valves
Classification of high temperature valves:
High temperature valve included high temperature butterfly valve, high temperature check valve, high temperature sanitary ball valve, high temperature sanitary diaphragm valve, plug valves, insulation valves, high temperature and high pressure valves, control valves, glass steel ball valves, high temperature breathing valve, high temperature flame arrester,

beverage
The performance of the high temperature valve is as follows:
1. High temperature valve quenching is good, can be deep quenching, rather than the surface of the anti-saw-lock surface hardening
2. Less brittleness of tempering

Butterfly-Valves-161115
3. High temperature valve processing is good, after processing, it is beautiful.
4. Good weldability
5. The impact of the absorption of good performance, the hammer hit up with a sense of bounce, can not be violent damage.

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The Difference of Pneumatic and Hydraulic Sanitary Valves

The difference of Pneumatic and hydraulic sanitary valves in the drive
Pneumatic and hydraulic sanitary valves were operated by a certain pressure of air, water, power, used cylinder and piston movement to drive the health-class valves, the general pneumatic air pressure is less than 0.8MPa, hydraulic or hydraulic pressure is between 2.5 MPa and 25 MPa.

ball valves

It can be used to drive the sanitary check valves, sanitary diaphragm valve; rotary gas and liquid ball valves, plug valves or butterfly valves and other valves. The driving force of the hydraulic device is large, and it is suitable for driving large diameter valves.
Sanitary Butterfly Valves
If used to drive the plug valve, ball valve and butterfly valve, you must use the reciprocating motion of the piston to change the surface rotary motion. In addition to the use of cylinder or cylinder piston to drive, there are pneumatic film driven, because its travel and driving force is small, it is mainly used to adjust the sanitary valves.

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The Price of Pneumatic Sanitary Valve

The price of sanitary ball valve
Pneumatic ball valve, electric, connection can be used flange, clip, clamp, card sets, structure can choose straight-through, sealed structure can choose soft seal, hard seal, anti-corrosion, anti- Pressure range is PN0.1-10Mpa, nominal diameter is DN6-100mm, the material can be used stainless steel. As the use of a wide range of valves, the same valve has different mix in different occasions and conditions.

Sanitary Ball Valves

The price is about 300 yuan.
1. Pneumatic sanitary ball valve price is about 200 yuan.
2. Pneumatic sanitary ball valve, the drive can be used manually, worm, pneumatic, electric, connection can be used flange, clip, clamp, card sets, structure can choose straight-through, sealed structure can choose soft seal, hard Sealing, pressure range is PN0.1-10Mpa, nominal diameter is DN6-100mm, material can be used stainless steel. As the use of a wide range of valves, the same valve has different mix in different occasions and conditions.

Sanitary ball valves
Pneumatic sanitary ball valve price is 278 yuan, manual ball valve, three-piece ball valve and gate valve belong to the same type. The difference in its closure is a sphere, the ball around the centerline of the valve is the rotation to open, close a valve. Ball valve in the pipeline is mainly used to do cutting, distribution and change the direction of flow of media. 3 ways ball valve is widely used in recent years, is a new type of valve, the valve in the pipeline should generally be installed horizontally.

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