Is a 15 valve a few points and a 25 valve a 6 point?

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.

For plastic pipes, a valve of 25 corresponds to 6 points (de25 corresponds to 3 to 4"）。

It is customary to use the nominal diameter when describing the caliber for metal pipes, while the outer diameter for plastic pipes. It is usually called 4 points, 6 points and 1 inch of water valves or water pipes, of which 4 points, 6 points and 1 inch refer to the imperial representation of the pipe diameter of the water valve or water pipe, and the full name of the points is English points.

For example, 1 2 inches is the nominal diameter of the 4-point valve (DN15) 15, and the inner diameter of the thread is about 19mm. Sometimes even if the valve body is not marked with specifications, we can use a ruler to roughly measure the specifications of the valve, usually if the 4-point valve is an internal thread, the inner diameter is usually about 18 20mm, if it is an external thread, the outer diameter of the thread can be measured, the same is true.

The valve is a control component in the pipeline fluid transportation system, which is used to change the channel section and the direction of medium flow, and has the functions of diversion, cut-off, throttling, check, diversion or overflow pressure relief. Valves for fluid control, from the simplest globe valves to the most complex automatic control systems used in a variety of valves, its varieties and specifications, valves from the very small instrument valve to the diameter of 10m for industrial pipelines.

It can be used to control the flow of various types of fluids such as water, steam, oil, gas, mud, various corrosive media, liquid metal and radioactive fluids, the working pressure of the valve can be from ultra-high pressure to 1000MPa, and the working temperature can be from ultra-low temperature of C-270 to high temperature of 1430.

1 2 TDN15 t quarter (4 cents) 3 4 TDN20 t 6 cents (6 cents).

1 TDN25 1 TDN32 1 TDN402 TDN50 2 TDN65 3 TDN804 TDN100 5 TDN125 6 TDN1508 TDN200 10 TDN250 12 TDN3001 inch = mm = 8 cents.

Hello dear, thank you for waiting, let me explain to you, the size of the valve is 25 mm in diameter; The outer diameter of the pipe is mm. The valve is often used as a control component in the fluid transportation system, which has the functions of shut-off, regulation, diversion, anti-rent and counterflow, pressure stabilization, diversion or overflow discharge.

The ball valve of the DN20 is an inch 6 point valve.

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. Valves are also divided into cast iron valves, cast steel valves, stainless steel valves, etc.), chrome-molybdenum steel valves, chrome-molybdenum vanadium steel valves, duplex steel valves, plastic valves, non-standard customized valves, etc.

A valve is a pipeline attachment used to open and close pipelines, control the flow direction, regulate and control the parameters (temperature, pressure and flow rate) of the conveyed medium. According to its function, it can be divided into shut-off valves, check valves, regulating valves, etc.

Assembly requirements: 1. The installation workshop must be clean, and Gao Hong or build a temporary clean area, such as using newly purchased color striped cloth or plastic film, etc., to prevent dust from entering during the installation process.

2. The assembly workers must wear clean cotton overalls, wear cotton hats, hair can not leak, wear clean shoes on their feet, wear plastic gloves on their hands, and slip off grease.

3. The tools used for assembly must be degreased and cleaned before assembly to ensure cleanliness.

4. The manufacturing standard of the valve belief code should be stated according to the national standard number, and if it is an enterprise standard, the enterprise documents should be attached to the procurement contract. <>

DN15 four points, 20 six points, 25 one inch, 32 inches two, 40 and a half inches, 50 two inches, 63 two and a half inches, 75 three inches, 90 three and a half inches, 110 four and a half inches.

For a detailed comparison of how big an inch of water pipe should be used, see the following table:

1. Pipe fitting size inch millimeter comparison table.

2. A detailed comparison of how big the valve diameter (interface) should be used for the water pipe, see the following table:

<>3. A detailed comparison of how big the water pipe (large outer diameter) should be used and how big the valve diameter (interface) should be used, see the following table.

1 2 dn15 quarter (4 cents) 3 4 dn20 six points (6 cents).

1′ dn25 1¼′ dn32 1½′ dn40

2′ dn50 2½′ dn65 3′ dn80

4′ dn100 5′ dn125 6′ dn150

8′ dn200 10′ dn250 12′ dn300

1 inch = mm = 8 cents.

Valve DN15 20 25 32 40 50 63 75 90 110 The size comparison is as follows: the number of inches in front of DN corresponds to one by one.

Component diameter.

The nominal diameter of some parts such as flanges and bearings refers to the nominal diameter of the cylinder and head that matches it. DN2000 flange refers to the flange that matches the DN2000 cylinder (container) or head. DN2000 saddle refers to the saddle support that supports DN2000mm containers.

There are also some parts whose nominal diameters are indicated by the nominal diameters of the tubes that match them.

For example, the pipe flange, DN200 pipe flange refers to the pipe flange connected to the DN200mm pipe. In addition, the nominal diameter of some container parts refers to an important size in the structure, such as the sight hole of the sight glass, the shaft diameter of the stuffing box, etc. DN80 (DG80) sight glass, the diameter of which is 80mm.

The analysis is as follows:

DN20 (6 in charge).

DN25 (1 inch pipe), DN32 (1 inch 2 pipe), DN40 (1 inch half pipe), DN50 (2 inch pipe), DN63 (2 inch pipe), DN75 (2 and 1 2 inches), DN80 (3 inch pipe), DN110 (4 inch pipe) DN: The unit of internal diameter of the pipeline is mm mm, and the nominal diameter is also known as the nominal diameter. It is neither the outer diameter nor the inner diameter, which is stipulated by people in order to achieve standardization, so that pipes and fittings of the same diameter can be connected to each other, and have interoperability and interchangeability.

For example, DN50 is 50 mm, and the fractional valve is the internal diameter of the pipe in inches, 1 inch = centimeter.

Imperial Metric Comparison Table.

Inch metric (mm) cents.

1 4 dn 8 2 in charge.

1 2 dn15 quarter (4 dn) 3 4 dn20 six (6 d) 1 dn25

1¼′ dn32

1½′ dn40

2′ dn50

2½′ dn65

3′ dn80

4′ dn100

5′ dn125

6′ dn150

8′ dn200

10′ dn250

12′ dn300

1 inch = mm = 8 cents.

A valve size comparison table is given to you, if it is useful, please give it a like, or read this article to find out. "Valve Diameter (DN) and Pipe Diameter Size Comparison Table".

Pipe fitting size and valve diameter and inch comparison table:

2.Valve diameter dn (nominal diameter) corresponds to the outer diameter of the pipe (mm).

DN15 four points, 20 six points, 25 one inch, 32 inches two, 40 and a half inches, 50 two inches, 63 two and a half inches, 75 three inches.

For details of the valve size, please refer to the ** link.