What does the symbol of P and E mean by adding the symbol of P and E to the ball valve?

P generally represents the body material, which is stainless steel!

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.

There is P on the valve diagram for what is good, P for material, chromium-nickel stainless steel. Such as Q641F-16P, pneumatic (6) flange (4) ball valve (Q), PTFE gasket (F), stainless steel material (P).In the national standard valve, the material is 304 stainless steel.

According to JB T308-2004 "Valve Pure Tongmen Model Preparation Formula Matching Method", P is the code name of chromium-nickel stainless steel, such as Q41F-40P (Q ball valve, 4 flange connections, 1 floating straight-through, F valve seat. According to the standard, strictly speaking, P is only used for model preparation, and there is no relevant standard to say that P can be marked on the valve body corresponding to the above materials. However, there are many valves that are still used as a mark for 304 stainless steel.

Hope mine is helpful to you, thank you and have a great day!

Give an example of bai:

As shown in the figure above, the valve body of the ball valve is usually marked with the following contents:

The logo of the brand DAO of the ball valve

The diameter of the ball valve is large and small, such as the capacity of DN200 in the picture above

The pressure of the ball valve, such as 16 in the above figure, means that the pressure is 16 kg, and the valve body material is 16 kg, such as the WCB in the above figure, which means that the body material of the ball valve is made of cast steel, and if the ball valve in the above picture is added with a handle operating device, the model is Q41F-16C, DN200

I'll take the DQ41F -16P cryogenic ball valve to talk about the first DU letter.

zhid means low temperature.

The first letter of all cryogenic valves is a letter abbreviation for ball valves.

The third letter 4 means flange connection.

The fourth letter 1 means that the channel position of the ball valve is two-way, the fifth letter F means fluoroplastic, the valve seat, the sealing surface or the lining material of the identification, the sixth number 16 means that the valve can withstand the working pressure of 16 kg, the seventh letter P means The nominal pressure unit [MPA] I am just an example, the valve model is generally compiled like this, and the more detailed should be a** ** The letter in ** corresponds to the meaning of different valve models.