What is the difference between the valve model J61F and J11F? Urgent

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.

6 is welded connection.

1 is the internal thread connection.

The difference is that the specifications are not the same. The scope of practicality is not the same.

Manufacturers have individuality and number with their own methods.

There are many variations, but there are pressure levels and bore sizes. As for the type of valve, you can understand it by looking at the appearance. Ball valves (welded, wired (internal and external)), gate valves, shut-off, check and so on.

A finished valve will have a nameplate before leaving the factory, which contains the basic parameter information of the valve: valve type, caliber, pressure, nominal diameter, valve body material, applicable medium, factory date, etc., among which different manufacturers may have different items, through this information you can basically understand the valve, and the cast valve body may also have caliber, pressure, flow direction or heat number and other information.

Conventional valves have certificates and nameplates before leaving the factory, which can be reflected in the general valve material on the valve body, some companies have.

The valve produced by the regular manufacturer will have a nameplate before leaving the factory, which contains the basic parameter information of the valve: valve type, diameter, pressure, nominal diameter, valve body material, applicable medium, and factory date.

Model representative type: including valve body material, spool material, connection method, applicable medium (very important) and other information.

The specifications represent the size, the DN on the valve indicates the nominal diameter, and the PN indicates the pressure rating (very important).

The purchased valve must have a certificate of conformity. It is very important when used in critical process situations.

No, the model represents the type, and the specification represents the size.

The coding method of a valve factory or an engineering company is different from the standard coding method. And it's super complicated, and you can only figure it out by finding the relevant personnel of this valve factory or this engineering company.

There is no standard for the manufacturer's model, find the manufacturer's manual, and take a look for yourself.

There are various types of valves. Your question is too broad. Now as far as domestic valves are concerned, you can look at the valve model as follows.

1. The Z, J, L, Q, D, G, X, H, A, Y, S of the valve type code are respectively indicated:

Gate valves, globe valves, throttle valves, ball valves, butterfly valves, diaphragm valves, plug valves, check valves, safety valves, pressure reducing valves, trap valves.

2 The connecting code of the valve is indicated separately:

1. Internal thread, 2. External thread, 4. Flange, 6. Welding, 7. Clamping.

3 The transmission mode code of the valve is indicated separately:

9. Electric, 6. Pneumatic, 3. Turbine worm.

4. The body material codes z, k, q, t, c, p, r, and v are respectively indicated:

Grey cast iron, malleable cast iron, ductile iron, copper and alloys, carbon steel, chromium-nickel stainless steel, chromium-nickel-molybdenum stainless steel, chromium-molybdenum vanadium steel.

5. The seat seal or lining code R, T, X, S, N, F, H, Y, J, M, W are respectively indicated:

Austenitic stainless steel, copper alloy, rubber, plastic, nylon plastic, fluoroplastic, CR stainless steel, cemented carbide, rubber lining, monel alloy, valve body material.

See the national standard GB T 32808-2016 "Valve Model Preparation Method".

What valve do you want? Flat valves? Expansion valves? Or a throttle valve? Or something? These materials are not easy to find, don't you have them in your unit? If you want to read it, go to api6a, it's clear.

Nothing to help you understand, brother.