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.

Read More

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.

Read More

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

Read More

Prospect of Sanitary Valve and Sanitary Pipe Fittings

Prospect of Sanitary Valve and Sanitary Pipe Fittings
In 2016, the competition in sanitary valves and sanitary fittings market is fierce. Our technology also needs to learn foreign enterprises.

To carry out the status quo: the application of sanitary valves and sanitary pipe fittings in the market is extremely common in recent years, because of its corrosion resistance, long life, light weight, health and safety features, the vast number of users love to use it. And compared to the ordinary valve fittings, because of its iron metal prices continue to grow these years.

3 way ball valve

In recent years, Adamant valves company has become a stainless steel high temperature corrosion-resistant submersible pump leader. Especially in recent years, the food industry put forward higher requirements, and stainless steel submersible pumps as the representative of the sanitary valves in the food products industry.

From the current point of view: China’s current consumption of stainless steel is 3.4kg per capita, was the amount of China in the forefront of the development, as well as the amount reached the thriving country, and still increase in an annual rate of 6.43%. Because of its material heat, wear, corrosion and other outstanding new energy, has also embarked on petrochemical, mining, electricity and other large industrial stage.

valve fittings

This sanitary ball valves production and sanitary pipe brought new opportunities, but also brought a certain challenge, the current technical barriers to manufacture the above, the industry has yet to be more professional attitude, more scientific body to One by one solution.

Sanitary valves and sanitary fittings, represented the valve products are leading the entire pump industry from time to time forward, and this led to the original information on the market, new stainless steel material from time to time come out; the patented technology, Standard from time to time progress, are to drive the whole industry chain toward a higher level from time to time.

Read More

Market Application of Sanitary Valve and Sanitary Pipe Fittings

Analysis on Market Application of Sanitary Valve and Sanitary Pipe Fittings
In 2016, the market competition of health-grade valves and sanitary fittings market competition is fierce, the manufacturing enterprises are better. Their technically also learn foreign enterprises.

valves
To carry out the status: the application of health-grade valves and sanitary fittings is extremely common in the market in recent years, because of its corrosion resistance, long life, light weight, health and safety with the vast number of users love. And compared to the ordinary valve fittings, because of its iron metal prices continue to grow these years, the price has been almost increased.
The use of stainless steel are green information, to complete 100% recycling, so in recent years has become a stainless steel corrosion-resistant submersible pump leader. Especially in recent years, the food industry put forward higher requirements, stainless steel submersible pumps as the representative of the sanitary valves and pipe products started to put in the food products.

pressure relief valve
From the current point of view: China’s current consumption of stainless steel is 3.4kg per capita, as well as the amount reached the thriving country, and still increase in an annual rate of 6.43%. Because of its material heat, wear, corrosion and other outstanding new energy, has also embarked on petrochemical, mining, electricity and other large industrial stage. This sanitary valve produced health-class pipe brought new opportunities, but also brought a certain challenge.
To sum up: sanitary valves and sanitary pipe fittings, represented by the valve products, are leading the entire pump industry from time to time forward, and this led to the original information on the market, new stainless steel material from time to time come out; the patented technology, Standard from time to time progress, are from time to time to drive the whole industry chain toward a higher level.

Read More