What does the globe valve J21W 100C stand for

Shut-off valves. J21W-100C stands for:

j: Valve type, indicating globe valve.

2: The code of the connection form, which indicates the external thread connection.

If it is 1, it is an internal connection.

1: The code of the structure form, which indicates the unbalanced straight flow channel of the valve disc.

W: The code of the sealing surface material or lining material, which indicates that the material of the sealing surface is the body material.

100: Pressure code or working pressure code at working temperature, indicating 100bar, that is, 10MPa pressure.

C: The code of the valve body material, which means that the valve body material is carbon steel.

It is usually something that can be omitted.

A number is omitted after J, the driving mode, usually when the driving mode is a handwheel, it can be omitted, the globe valve, also known as the shut-off valve, belongs to the forced sealing valve, so when the valve is closed, pressure must be applied to the valve disc to force the sealing surface not to leak. When the medium enters the valve from under the disc, the resistance that needs to be overcome by the operating force is the friction between the stem and the packing.

The thrust generated by the pressure of the medium, the force of closing the valve is greater than the force of opening the valve, so the diameter of the valve stem should be larger, otherwise the failure of the stem bending at the top will occur. According to the connection method, it is divided into three types: flange connection.

Thread connection, welded connection. After the appearance of the self-sealing valve, the medium flow direction of the globe valve is changed from the top of the disc to enter the valve cavity, at this time, under the action of medium pressure, the force of closing the valve is small, and the force of opening the valve is large, and the diameter of the valve stem can be reduced accordingly. At the same time, under the action of the medium, this form of valve is also tighter.

China's valve "three to give" has stipulated that the flow direction of the globe valve is all top-down. When the globe valve is opened, the opening height of the disc is the nominal diameter.

25% at 30%. The maximum flow rate has been reached, indicating that the valve has reached the fully open position. Therefore, the fully open position of the globe valve should be determined by the stroke of the disc.

The opening and closing parts of the stop valve (globe valve) are plug-shaped discs, which are flat or sea cone surfaces on the seal, and the disc moves in a straight line along the center line of the valve seat. The movement form of the valve stem, (common name: dark rod), there is also a lifting and rotating rod type that can be used to control air, water, steam, various corrosive media, mud, oil, liquid metal.

and the flow of various types of fluids such as radioactive media. As a result, this type of shut-off valve valve is ideal for shut-off or regulation and throttling. Due to the relatively short opening or closing stroke of the stem and the very reliable shut-off function, and because the change of the seat opening is directly proportional to the stroke of the disc.

It is very suitable for regulating the flow rate.

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 are the top ten domestic first-line valve brand manufacturers in 2022-2023, but for reference only: Suzhou Neway Valve Co., Ltd., Shanghai Guanlong Valve Machinery, Shanghai Qizhong Valve Manufacturing, 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 review is as follows:According to the standard JB T 308-2004 "Valve Model Preparation Method".

J: Globe valve.

1: Female thread connection.

1: The disc is unbalanced, and the flow channel is straight.

X: The sealing surface material is rubber.

10: The nominal pressure is PN10

The body material code is not marked, and the body is gray cast iron.

The globe valve, also known as the shut-off valve, is a forced sealing valve, so when the valve is closed, pressure must be applied to the disc to force the sealing surface not to leak. When the medium enters the valve from the bottom of the valve disc, the resistance that needs to be overcome by the operating force is the friction between the valve stem and the packing and the thrust generated by the pressure of the medium, and the force of closing the valve is greater than the force of opening the valve, so the diameter of the valve stem should be larger, otherwise the failure of the top bend of the valve stem will occur.

How it worksThe globe valve, also known as the cut-off door, is one of the most widely used valves, and the reason why it is widely popular is that the friction between the sealing surfaces in the opening and closing process is small, relatively durable, the opening height is not large, the manufacturing is easy, and the maintenance is convenient, not only suitable for medium and low pressure, but also suitable for high pressure. The closing principle of the globe valve is to rely on the pressure of the valve stem to make the sealing surface of the disc and the sealing surface of the valve seat fit tightly to prevent the flow of medium. China's valve "three to give" has stipulated that the flow direction of the globe valve is all top-down, so there is directionality when installing.

According to the standard JB T 308-2004 "Valve Model Preparation Method".

J: Globe valve.

1: Female thread connection.

1: The disc is unbalanced, and the flow channel is straight.

X: The sealing surface material is rubber.

10: The nominal pressure is PN10

The body material code is not marked, and the body is gray cast iron.

J11W-10T globe valve Hongxin, J Intercept rubber check valve, 1 internal thread connection, 1 straight flow channel, W sealing surface is body processing, 10 nominal pressure PN10, T body material is copper alloy.

J--indicates the valve type (globe valve); 1. --- connection form (internal thread) beam is peerless; 1--Structural form (straight-through); h--nitric acid corrosive medium); 16--Pressure level (16MPa); p--Body material (Incontinol).

Globe valve: Globe valve, also known as globe valve, is a forced sealing valve and is one of the most widely used valves.

The globe valve relies on the pressure of the valve bar to make the sealing surface of the valve disc and the sealing surface of the valve seat fit tightly, preventing the flow of the medium, because only the medium is allowed to flow in one direction, so the installation is directional. Globe valves can be divided into direct flow globe valves, angle globe valves, plunger globe valves, upper threaded stem globe valves, lower threaded stem globe valves, etc., they have durable, small opening height, easy to manufacture, convenient maintenance, not only suitable for medium and low pressure, but also suitable for high pressure.

They are different, for example, J41H is an open rod flange cast steel globe valve. J = globe valve 4 = flange 1 = open rod h = cast head kobelco. Each symbol represents an installation.

According to the domestic valve model standard, the model of the globe valve is represented by the valve type, driving mode, connection method, structural form, sealing material, and valve body material code.

What is the material of the globe valve 12S108-1?

The material of the globe valve 12S108-1 is generally ductile iron or carbon steel. Ductile iron has high strength and good corrosion resistance, while carbon steel is widely used in various mechanical equipment and engineering fields because of its high strength, high hardness and good toughness. Please note that different manufacturing halls and models may have different materials.

If you need more precise information, it is recommended to contact the manufacturer or seller to obtain the relevant technical parameters.