What does Q41 mean on the valve

q for ball valve and 41 for flange connection.

The valve (famen) is a control component in the fluid transfer system, which has the functions of shut-off, regulation, diversion, prevention of backflow, pressure stabilization, diversion or overflow pressure relief.

Valves for fluid control systems range from the simplest shut-off valves to the most complex valves used in automated control systems. Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, slurries, oils, liquid metals and radioactive media. According to the material, the valve is also divided into cast iron valves, cast steel valves, stainless steel valves, etc.), chromium-molybdenum steel valves, chromium-molybdenum-vanadium steel valves, duplex steel valves, plastic valves, non-standard customized and other valve materials.

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.

Q - valve type code: ball valve;

4-valve connection touch form code: flange;

1-valve structure code: floating straight-through;

f—seat sealing surface or lining material code: fluoroplastic;

16—nominal pressure.

Numeric value; C—valve body material code: ZG25.

Floating ball valves are generally from DN15 to DN250. Fixed ball valves generally start from DN50. To sum up, the small diameter uses the floating ball back sensitive blue valve, and the large diameter uses the fixed ball valve.

The meaning of the ball valve model Q41F-16C stands for:

Q stands for ball valve lifting, 4 stands for flange connection, 1 stands for floating ball straight-through structure, F stands for sealing surface material PTFE plastic, 16 represents nominal pressure of 16 kg, C stands for valve body material is cast steel.

So this is a simple dust representation of a cast steel flanged ball valve operated by a hand tong zen handle. As shown below:

First, the length of the valve body is different.

1. Ball valve Q41H: L130, D95, D1 65, B14, N4-14.

2. Ball valve Q41F: L140, D95, D1 65, B14, N4-14.

Second, the installation size is different.

1. Ball valve Q41H: It only needs to be closed tightly with the operation of 90 degrees of rotation and a small rotating torque, and it is made of chromium-chromium-nickel chromium-molybdenum stainless steel.

2. Ball valve Q41F: It only needs to be rotated 180 degrees to close tightly, and it is made of chromium-nickel stainless steel.

Third, the use is different.

1. Ball valve Q41H: tight and reliable. There are two sealing surfaces, and the sealing surface material of the ball valve is widely used in various plastics, which has good sealing performance and can achieve complete sealing. It has also been widely used in vacuum systems.

2. Ball valve Q41F: When fully open or fully closed, the sealing surface of the ball and valve seat is isolated from the medium, and the erosion of the sealing surface of the valve will not be caused when the medium passes.

There is no difference, except that the sealing form of the two valves is different.

Q stands for ball valve, 4 stands for flange connection, 1 stands for straight-through and the seal surface code behind it: F is fluoroplastic, H is stainless steel hard seal.

It should be noted that the standard of the valve is different and the nominal pressure of the valve behind is not the same, because there are several standards for the flange now, which will cause the size of the outer edge of the flange, the thickness, and the number of bolt voids to be different. The difference in nominal pressure will also cause the length to be different, and some high-pressure ones will have requirements for the connection form, which will also cause the length to be different!

This is a ball valve with a manual wire mouth soft seal.