Standard specification for stainless steel flanged globe valves

Design and manufacturing standard: GB T 12235

Structural length standard: GB T 12221-2005 connecting flange standard: GB T 9113

Pressure and temperature grade: GB T 12224-2005 Test and inspection standard: GB T 13927-2008<>

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.

The use of shut-off valve in our life is very extensive, so how about the stainless steel shut-off valve model, what are the stainless steel shut-off valve models, let's take a look at the stainless steel shut-off valve models.

What are the models of stainless steel globe valves.

U.S.-Japan standard globe valve: J41Y, J41W;

Bellows globe valve: WJ41H, WJ41W;

Stainless steel globe valve: J41F, J41H, J41W;

Cryogenic shut-off valve: DJ41H, DJ41Y, DJ41F;

Electric globe valve: J941F, J941H;

Welded globe valves: J61Y, J61W, J961Y, J961W;

Angle globe valves: J44H, J44W, J47H, J47W

Globe valve model compilation method.

Additional code for globe valve: W bellows, D low temperature, B insulation;

1) Globe valve category code: J means globe valve;

2) Globe valve transmission mode: manual without code, 5 bevel gears, 6 pneumatic, 9 electric;

3) Globe valve connection: 4 flange connection, 6 welding; Burying.

4) Globe valve structure: 1 straight-through, 2Z straight-through, 3-way, 4-angle, 5Y-type DC, 6-balanced straight-through, 7-balanced-angle, 8-needle type;

5) Globe valve seal material: F fluoroelastomer, H stainless steel, Nylon plastic, Y cemented carbide, M Monel alloy, W valve body direct processing;

6) The nominal pressure of the globe valve: 16 means that the pressure is 16 kilograms; 7) Cut-off valve body material: A titanium alloy, C carbon steel, I chromium molybdenum steel, P stainless steel 304, R stainless steel 316;

Such as: WJ41H-16C bellows globe valve, W bellows, J globe valve, 4 flanges, 1 straight-through, H stainless steel, 16 pressure 16 kg, C carbon steel.

Advantages of stainless steel valves:

1. Double sealing design (bellows + packing) If the bellows fails, the stem packing will also avoid leakage and meet international sealing standards. 2. Safe and environmentally friendly, no fluid loss, reduce energy loss, and improve the safety of factory equipment.

3. Long service life, reduce the number of maintenance and reduce operating costs.

4. The sturdy and durable bellows sealing design ensures zero leakage of the valve stem and provides maintenance-free conditions.

It is suitable for shut-off valve on the pipeline of heat transfer oil, toxic, flammable, permeable, polluted environment and radioactive fluid medium, and can also be used for adjustment, which is a high-quality product to create a leak-free factory.

Stainless steel globe valve is a kind of globe valve, which is called stainless steel globe valve because it is made of stainless steel material. The biggest advantage of the globe valve is the use of stainless steel materials, regardless of the wind and sun, he will not rust, or the rust speed is very slow, can be used for a long time, stainless steel globe valve is a major choice for choosing the globe valve. Stainless steel globe valves are divided into electric stainless steel globe valves, pneumatic stainless steel globe valves and manual stainless steel globe valves.

Stainless steel globe valves are widely used in chemical, pharmaceutical, shipbuilding, food machinery and other industries because of their simple gate valves. The working principle is to apply pressure to the valve during the closing period of the valve, so as to force the sealing surface not to cry out and leak and achieve the effect of preventing the flow of air.

Stainless steel globe valve has the following advantages: 1. Simple structure. The simple structure makes it more convenient in the process of use and maintenance, and is deeply trusted and loved by the public.

2. Wear-resistant. The structural surface is made of stainless steel, the sealing performance is good, the contact area between the sealing surface of the valve disc and the valve body is not large in the process of use, and the exquisite design makes it easy to slide, and the safety of the operator is greatly guaranteed. 3. Good sealing performance.

The design of the valve is completely designed from these aspects to reduce the pressure of the flowing object in the valve and reduce the consumption and damage to the operator's Zheng Shen power. In order to reduce the pressure as much as possible, the design of the valve is more complex, all in all, the closure performance is good, and the operability is high.

However, there are pros and cons to everything, and there are pros and cons, and the same is true for stainless steel globe valves. In addition to the above few advantages, he also has his own fly in the ointment. 1. The fluidity of the flowing object in the valve is relatively large, and the resistance is also large, so it needs to use greater force in the process of opening and closing the valve, and the power consumption is relatively large.

2. High requirements for media. Not all media can be suitable for him, and it is not necessary to consider it for media with particles, high viscosity and easy coking. 3. The adjustment performance is relatively poor.

He regulates the medium with fluid inside, and the fluid pressure is often higher than the pressure of the shut-off valve outside, so his performance is poor.

There are two sides to everything, and we have to see both the advantages and the disadvantages. We can't blindly believe in its advantages and ignore its shortcomings, and of course, we can't blindly believe in the shortcomings of the product and ignore the advantages of the product itself. He should be judged critically on everything.

Just like the stainless steel globe valve, we need to choose and use it with our own most neutral attitude. Today's introduction to the relevant knowledge of stainless steel globe valve is here, I hope it can be helpful to everyone in life! Ludough.

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1. The structure is simple, and the manufacturing and maintenance are relatively convenient.

2. The working stroke is small and the opening and closing time is short.

3. Good sealing, small friction between sealing surfaces, and long service life. 1. The fluid resistance is large, and the force required for opening and closing is large.

2. It is not suitable for media with particles, large viscosity and easy coking.

3. Poor adjustment performance.