The port of PVC pipe, nothing more than flat mouth and flar, has long been commonplace, but I don't know if you haven't noticed, flaring is also divided into a variety of types, I did not search for the introduction of the system on the Internet, here try to make this problem clear, throw bricks and jade.
To introduce "flaring", you need to first introduce "flat mouth".
"Flat mouth" is the end form of the pipe foundation, that is, the end of the pipe remains in the original straight state, without any expansion or flanging treatment, most of the common PVC drainage pipes are flat mouth design, as shown in the following figure:
However, "Pingkou" has shortcomings that cannot be ignored:
First, additional connectors (joints, flanges, etc.) are required, which increases the cost;
Second, the contact area is small and the pressure bearing capacity is limited;
Thirdly, whether it is gluing or flange connection, it is time-consuming and labor-intensive.
"Flaring" is an improvement to solve the shortcomings of flat mouth in some applications.
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The so-called "flaring" refers to the expansion of the end of the pipe by mechanical means to form a specific shape of the end, which is convenient for the pipe connection, and the flaring design can enhance the tightness and stability of the pipe connection.
1. Why do you need to flaring?
It has been said in the introduction of flat mouth, the purpose of flaring is to overcome the shortcomings of flat mouth in some applications, and the advantages of flaring can be summarized as follows:
● Enhanced tightness:
Flaring can provide a larger contact area, which enhances the tightness of the pipe connection;
● Improve connection strength:
The flared end can be connected to other pipes more firmly by means of rubber rings, etc., to improve the strength and stability of the connection.
● Easy to install and disassemble:
The flaring design makes it easier to connect and disassemble pipes, especially in systems that require frequent maintenance or replacement.
● Lower cost:
The flaring design generally does not require additional connectors and does not add additional costs.
2. Common flaring types?
Type 1: U flaring (flat flaring)
U flaring, also known as flat flaring, refers to the extension of the end of the pipe to make its inner diameter slightly expanded, but the end remains flat without special grooves or shapes.
● Advantages of U flaring:
- Easy to connect:
The socket is glued, easy to install, and no special installation tools are required.
- Lower cost:
The process is simple, and the manufacturing and installation costs are low.
—— Easy maintenance:
Due to the simple connection, the maintenance and repair of the piping system is more convenient.
● Applicable Scenarios:
- Household water supply and drainage systems:
Suitable for water pipe connections inside the home.
—— Minor works:
Such as pipe connections for small buildings and temporary facilities.
—— Low-pressure piping system:
Suitable for piping systems that do not need to withstand high pressures.
Type 2: R flaring
The R flaring is usually based on the U flaring, with a certain depth or recess design, so as to provide a better position and sealing effect when installing the sealing ring or connector.
● Advantages of R flaring:
—— Good sealing:
The R-flared design is usually grooved and used in conjunction with the seal to provide an excellent seal.
—— Strong compressive performance:
Due to the use of seals, the R flares can withstand higher pressures and are suitable for high-pressure piping systems.
—— High stability:
The joints are stronger, reducing the risk of leakage and breakage.
- Reduced effects of thermal expansion:
The sealing ring can buffer the effect of thermal expansion and adapt to the environment with large temperature differences.
● Applicable Scenarios:
—— Municipal Engineering:
Urban water supply and drainage systems, for example, require high tightness and high pressure resistance.
—— Industrial Piping System:
It is suitable for chemical, pharmaceutical and other pipeline systems that need to transport high-pressure fluids.
- Agricultural Irrigation:
It is suitable for irrigation systems that require stable operation for a long time.
Type 3: Rectangular flaring
Rectangular flaring is relatively rare, this is what I learned from consulting the flaring machine manufacturer, and the flaring effect refers to the following figure:
As for what is better about the rectangular flaring than the R flaring, I don't understand it too much, and the big guy who understands it can add it.
The above is a summary of PVC pipe ports, flat mouth, U flar, R flar, and rectangular flar, a brief understanding, it is enough to see it.