Is the structural length of the American standard butterfly valve the same as that of the national s

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.

ASA and GB are different, in addition to the length of the structure, the size and number of threads, and the size of the pitch circle.

In our daily life, there are many places where American standard butterfly valves are used. American Standard butterfly valves are generally used in pipelines. The American Standard butterfly valve is widely used because of its simple structure, small size, light weight, and only a few parts.

1. What is the American Standard butterfly valve?

American Standard butterfly valves are generally installed horizontally in pipelines. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis at an angle between 0°-90°, and when it rotates to 90°, the valve is fully open. The American Standard butterfly valve has a simple structure, small size, light weight, and is composed of only a few parts.

The American Standard butterfly valve is a national key new product, and the high-performance manual butterfly valve adopts a double eccentric and a special oblique cone oval seal structure. It solves the problem that the traditional eccentric butterfly valve is still in the sliding contact friction and vertical friction when the sealing surface is opened and closed at 0° 10°, and realizes the effect of separating the sealing surface of the butterfly plate at the moment of opening and sealing the contact when it is closed, so as to achieve the purpose of prolonging the service life and the best sealing performance. Blower inlet, relay fan inlet, electric demisting tandem and Unicom valve, S02 main blower inlet, converter adjustment, preheater inlet and outlet and other adjustment and cut-off air volume use.

2.It is used in the sulfur incineration, conversion and dry suction section of sulfur acid production system, and is the preferred brand of valve for sulfur acid production device, which is considered by the majority of users to be: good sealing performance, light operation, secondary corrosion, high temperature resistance, easy operation, flexible operation, safe and reliable butterfly valve, which has been widely popularized and used.

3.It is also widely used in chemical, petrochemical, smelting, pharmaceutical, food and other industries in SO2, steam, air, gas, ammonia, CO2 gas, oil, water, brine, lye, seawater, nitric acid, hydrochloric acid, sulfuric acid, phosphoric acid and other media pipelines as a regulating and intercepting device.

3. What is the difference between American standard valves and national standard valves?

American standard valves are designed, manufactured, produced and tested in accordance with American standards, and the valves are called American standard valves.

The unit of nominal diameter of the national standard valve is mm, and the nominal diameter of the American standard valve is in (inches). In addition, there is a difference in the length of the structure. The inspection requirements are also different, and the inspection requirements of American standard valves are higher than those of the national standard.

The above is the relevant knowledge about the American Standard butterfly valve. Including the definition of American standard butterfly valve, the use of American standard butterfly valve, and the difference between American standard butterfly valve and international butterfly valve. American Standard butterfly valves are used in various fields.

American standard butterfly valves can be used not only in the sulfuric acid industry, but also in the chemical, petrochemical, medical, food and other industries. I hope that everyone has a deeper understanding of the American Standard butterfly valve, which is widely used in daily life.

You can get it for free

According to the connection method: there are the following three types of LUG (lug type), WF (clamp or disc type), RF (flange type, long and short type), and others such as RTJ ring, concave and convex surface, etc.

According to the structural form: there are center line, single eccentricity, double eccentricity, triple eccentricity, etc., according to the driving mode: handle type, gearbox type (turbine), pneumatic, electric, hydraulic, (gas-liquid-electric) linkage, hand communicator, etc.

According to the working conditions of the medium, it can also be divided into more details, such as high temperature type, low temperature, ultra-low temperature, wear resistance and so on.

The specific needs to be selected according to the working conditions.

Specification: DN25 DN1200

Style: handle, worm gear, electric, pneumatic.

American Standard Valve: The valve designed, manufactured, produced and tested according to American standards is called American Standard Valve.

The main differences between American standard valves and national standard valves are:

1. The unit of nominal diameter of the national standard valve is mm, and the unit of the nominal diameter of the American standard valve is in (inches).

2. The standard American standard of the flange is also different from the national standard.

3. The length of the structure is not the same.

4. The inspection requirements are different, and the inspection requirements of American standard valves are higher than those of the national standard.

The body of the national standard globe valve is similar to the S type, and the body of the American standard globe valve is oval, which is easy to see.

on the label of the valve body.

Pressure level: pounds (lb) for American standard, PN for national standard;

Nominal diameter: in (inches) for the American standard, millimeters (mm) for the national standard;

Valve body material: The label of the valve body material is also different, and it is marked according to the steel number of the country.

1.The unit of nominal diameter of the national standard valve is mm, and the unit of nominal diameter of the American standard valve is in (inches), which will be marked on the valve body and can be distinguished;

2.There is also a difference in the flange contact surface, which can be seen.