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brass tube 1.5 inch id

author:MF manufacturerstime:2022-03-14 23:27:28

(brass tube 1.5 inch id)How do you distinguish between valves?？Use“Minute”、“inch”or“DN..”?？Do you know the specific meaning?？

(brass tube 1.5 inch id)

First of all, we are popular“inch”Origin：

inch(inch，Abbreviatedin.)，The intention of the Dutch is the thumb，One inch is the length of a thumb，Of course, the length of the people's thumbs is different.。

History is still a day in the Japanese enemies，National powerful，14Century，Emperor Edward II was promulgated“Standard legal inches”。It is specified：Select three largest grains from the middle of the barley ears and sequentially arranged in the length of one inch.(about25.4Millimeter)，Continued so far。

Universal，Usually we go to the Hardware store to buy a valve or water pipe、Join，Don't understand the little partner, take the sample to buy，Professional explanation specifications，To be a few points or few inch，In fact, carefully see valve bodies or boxes such as water valves or water pipes.，E.g1/2′、3/4′、1′、DN15etc。

As shown below：Bathroom common face hot hot water right angle valve，DimensionsDN15。

Boy，If you want to understand and learn，Specifications and dimensions of these valves，It must be remembered in keeping the following common conversion relationships.：

Basic formula conversion：1 inch≈25.4Millimeter =8Score(Abbreviation：Minute)

so ：1Score＝1/8 ′(inch) ≈3.175mm

(brass tube 1.5 inch id)2Score＝1/4‘(inch)

4Score＝1/2‘(inch)

6Score＝3/4′(inch)

(For easy memory，Usually a few points of inches8Get corresponding points)

The picture below shows common inches.、Minute、DN、Correspondence of outer diameter size：

Use the most valves in life1/2′(4Estare)，Sometimes labelingDN15，In fact, the specifications are the same.，It's just that the label is different.。

We usually call4Divide6Divide1Inch water valve or water pipe，in4Minute、6Minute、1Inch, is a press representation of a pipe diameter of a water valve or a water pipe.，Ideal is interested in。

As shown below：1/2Inch4Estare(DN15)Nominal15，The thread is about19mmabout。

unit：Millimeter

(brass tube 1.5 inch id)

The wire used for use is as follows：

(brass tube 1.5 inch id)

Sometimes even if the valve body is not labeled，We can determine the specifications of the valve with a rough measurement of the ruler.，usually4If the spool is the internal thread, it is usually inner diameter.18～20mmabout，If the external thread can measure the outer diameter of the thread，Concrete。

The following family is commonly used4Flaws：

(brass tube 1.5 inch id)

Below3/4′Also known as6Estare(DN20)，Nominal20，Usually inner diameter24mmabout。

unit：Millimeter

(brass tube 1.5 inch id)

The figure below shows the rough estimate of the measurement method.4Minute、6Piece method ：

From above，Many small partners will be confused，Valve specificationDNMean meaning，In fact, valve specificationsDN20middleDNName(diameter)Path symbol，Nominal（nominal diameter），Average outer diameter（mean outside diameter）Nominal diameter is also known as a diameter，Neither the outer diameter is not an inner diameter，It is produced by people to achieve standardization.，Make the same diameter pipe and accessories to connect each other，Interoperability、Interchangeability。

soDNNeither an outer diameter，Not an inner diameter，But closer to the inner diameter。Low pressure level，Wall thickness，DNLess than the inner diameter；High pressure level，Wall thickness，DNBig than inner diameter。DNRepresenting a nominal diameter，Its unit is millimeter，But the nominal diameter is a name size，Not absolute actual size。

E.g，Pipeline or valve designer calculation，Need an inner diameter102mm，Wall thickness3mmSteel pipe，The outer diameter of the pipe is108mm，According to the design of the steel pipe, there is just such pipes.，under these circumstances，Pipe line diameter102mm，The nearest nominal diameter of the closer to the closer is designed.DN100，Obviously its nominal size is obviously less than inner diameter。In another case，Other outer diameter108mmPipe，Due to high pressure，Wall thickness requirements6mm，Then the inner diameter of the pipe is96，The valve used at this time is stillDN100，At this time, the nominal size is larger than the inner diameter of the pipe.。

Below1′(inch)DN25Valve，Usually not called8Estare，Nominal diameter25，The thread is about30mmabout，Push：

下图为1.2′(Valve specification)DN32的阀门，Minute32，螺纹内径约39mminch。

下图为1.5(英寸)DN40的阀门，Valve40，螺纹内径约为46mmNominal diameter。

下图为2′(英寸)DN50的阀门，Minute50，内螺纹内径约为56mminch。