How to connect PPR pipe and aluminum plastic pipe

Aluminum-plastic pipe and PPR pipe connection method:

When the aluminum-plastic pipe is connected with the PPR pipe, it only needs to be connected with an all-plastic direct (all-plastic elbow), the aluminum-plastic pipe and the all-plastic direct (all-plastic elbow) are hot-melt connections, and the PPR pipe and the all-plastic direct (all-plastic elbow) are also hot-melt connected, the specifications of the pipe and the pipe fittings should be unified, and the pipe and the pipe fittings will be heated to the critical melting at the same time when the connection is connected, and then, when the pipe is immediately inserted into the pipe fittings in a straight line, the welded pipe has good contact performance and high success rate.

Aluminum-plastic pipe link fittings.

The fittings connected in this method must be of the same model. The material of both pipes is PPR pipe, which can be hot-melt connected, and the aluminum-plastic pipe and PPR pipe are connected by all-plastic direct joints, which will not leak, safe and reliable, and it is worth reassuring.

At present, PP R pipes and their fittings have been widely used and recognized. Its advantages are light weight, good strength, corrosion resistance, long service life, and will not adversely affect the human body and the environment, its heat resistance, good thermal insulation performance, easy installation, reliable test. Therefore, we should pay attention to the optimal range of its application in use, and pay attention to the following when installing.

PP R pipe is modified polypropylene, which is very light in weight, smooth in surface, easy to transport and easy to store. Special attention should be paid to avoid dragging on the ground and sun exposure during transportation and storage, handling gently during installation, avoiding collision of hard debris and sharp objects (stones, bricks, iron nails, etc.), and surround 10 20 cm with fine sand and soil when directly buried, and then fill other types of soil, and add casing when passing through the wall or floor, and protective casing should also be added when laying on the ground or wall. In addition, whether it is open laying or dark laying, the pipeline must be fixed with a matching special clip, especially the hot water pipe, and the clip must be encrypted accordingly.

The connection method of PP R pipe and pipe fittings generally adopts hot melt or electric fusion connection, when connecting, the pipe and pipe fittings are heated at the same time to the critical melting time, and then, the pipe is immediately inserted into the pipe fittings in a straight line, and the welded pipe has good contact performance and high success rate. However, it is necessary to pay attention when welding, do not shake from side to side, and the time should not be too long. The specifications of pipes and fittings should be unified.

In addition, the welding equipment should have constant temperature control, the temperature is too high and the welding is impermeable, easy to leak, the temperature is too low, the welding speed is slow, and it is laborious.

In practice, in order to save materials, some construction personnel take pipelines to connect pipelines in some places, which is very unreasonable. Because when the pipes of different diameters are connected, the diameter of the pipe at the connection part will be greatly reduced, under normal circumstances, the pipe with a diameter of 20 mm is connected with the pipe with a diameter of 25 mm, and the inner diameter of the connection part is only about 5 10 mm, and some are even blocked, and it is also quite laborious when connecting.

When welding pipes, we must be careful, carefully check the length of the pipe, the specifications of the pipe fittings, be sure to avoid the wrong connection, in case of the wrong connection, remove the pipe fittings, and then connect a pipe sleeve with the same regulations, connect a section of pipes of the same specification, and then connect the correct pipe fittings. Due to the different laying parts of the pipeline, there are open and concealed, some are far away from the wall, and some are close to the wall, so the operating environment is also different, so we are required to use the welding equipment correctly, strictly implement the operating procedures, the operator must cooperate well, coordinate, especially in high altitude and narrow places, we must pay special attention to it, and there can be no negligence.

At present, the specification of PP R pipe is generally 16 110 mm (outer diameter of pipe), and the application range in engineering design is more than 40 mm for indoor trunk transmission pipelines, and 16 32 mm for indoor branch transportation pipelines. Due to the good sealing performance, easy pressure and corrosion resistance of the pipe, it is especially suitable for concealed installation and any medium transportation pipeline, which can be widely used in production and life, especially suitable for the transportation pipeline of chemical, petroleum and other products.

PPR aluminum-plastic pipe and PPR water pipe, what is the difference between the two, and can they be connected together?

Aluminum-plastic tube external tooth joint + PPR internal tooth joint.

There is an aluminum layer in the middle of the aluminum-plastic pipe, which generally needs to be connected with copper fittings, and the connection method is threaded connection.

Outstanding hygienic properties:

The inner and outer layers of the aluminum-plastic pipe are made of special polyethylene material, which is clean and non-toxic. The most important thing is that the middle layer of the aluminum-plastic pipe is aluminum, which can not only block light, but also block oxygen. The environment of the microorganisms must be light and aerobic.

The middle aluminum layer of the aluminum-plastic pipe prevents the breeding of microorganisms and algae plants, which is beyond the reach of the all-plastic pipe. All plastic.

The advantages of aluminum-plastic pipes can be summarized as follows:

Outstanding hygienic performance: The inner and outer layers of the aluminum-plastic pipe are made of special polyethylene material, which is clean and non-toxic. The most important thing is that the middle layer of the aluminum-plastic pipe is aluminum, which can not only block light, but also block oxygen.

As we all know, the environment of the sinister microorganisms must be light and aerobic. The middle aluminum layer of the aluminum-plastic pipe prevents the breeding of microorganisms and algae plants, which is beyond the reach of the all-plastic pipe.

The all-plastic pipe not only adds a large number of antioxidants to prevent material degradation, and the antioxidants are extracted into the water retained in the pipeline, which is easy to cause water pollution, and because there is no light-proof and oxygen-blocking material in the all-plastic pipe, it is easy to cause secondary pollution of water quality due to microorganisms.

The above content reference: Encyclopedia - aluminum-plastic pipe.

Aluminum-plastic water supply pipelines can be in the form of rubber ring interface, adhesive interface, flange connection, etc., and the rubber ring interface is suitable for the connection of pipes with a diameter of D63-D315mm; The bonding interface is only suitable for the connection of pipes with an outer diameter of less than 160mm; Flange connections are generally used for the connection of hard PVC pipes and cast iron pipes and other material valves. High-density polyethylene plastic pipes can be hot-melt connected. When the polyethylene pipe is connected with the metal pipe, it is connected by a steel-plastic transition joint.

Check the hot melt machine, check whether the grinding head is complete, fix the die head on the heating plate with a tool, use the aluminum-plastic pipe clamp a good draped scissors is also possible, cut vertically according to the length used, keep the nozzle flat of the aluminum-plastic pipe, remove the dust on the welding surface of the pipe and pipe fittings and insert the word in parallel, quickly insert and connect together.

It can be directly with a special equal diameter of an aluminum-plastic pipe, and the connection between the pipe fittings and the pipe must be tightened and locked when connected.

There is that kind of special hot melt machine, one end is a big head, and the other end is a small head. After plugging in and heating, a pair of big heads and small heads will do.

Aluminum-plastic pipes have special aluminum-plastic pipe fittings, usually with equal diameter direct, outer wire direct, variable diameter direct and other pipe fittings, brass, white steel and cast iron Common brands are Jinde, Rifeng, etc.

Upstairs is talking about the fittings of PPR pipes (this kind of pipe needs to be hot-melt connected).

How to connect the aluminum-plastic pipe in the same way as the usual aluminum-plastic pipe, the specific operation steps are as follows:

Put the nuts and springs on first, and then open the tube a little more.

Then connect the pipe fittings and the hard pipe when connecting the hard pipe first apply sealant on the hard pipe.

Then wrap the raw material tape, and then touch a little sealant.

ps: Note that the aluminum-plastic pipe must be cut flat, and after installation, connect the gas and apply the foam of dish soap to the joint, check whether there is air leakage, and buy a better raw material belt, don't buy a cheap one. The copper joint is dedicated to aluminum-plastic pipes, and it is designed with double sealing rings and special clamps, which have the effect of sealing and fastening.

As long as the mouth of the aluminum-plastic pipe is slightly flagged with a flarer, and then the aluminum-plastic pipe is directly inserted into the copper joint, and then the fastening nut is tightened, which can be tightly and firmly connected with the aluminum-plastic pipe.

Aluminum plastic tube (English name: aluminum plastic tube) is a new type of pipe composed of longitudinal welded aluminum pipe in the middle, polyethylene plastic in the inner and outer layers, and hot melt adhesive co-extrusion between layers. Polyethylene is a non-toxic, odorless plastic with good impact resistance, corrosion resistance, and weather resistance.

The middle layer of longitudinal welding aluminum alloy makes the pipe have the compressive strength of metal, and the impact resistance makes the pipe easy to bend, and the aluminum-plastic composite pipe has the two characteristics of strong pressure resistance of metal pipe and acid and alkali corrosion resistance of plastic pipe, which is a model of a new generation of pipes.

Aluminum-plastic pipe (aluminum-plastic composite pipe) is a more popular pipe on the market, due to its light weight, durability and convenient construction, as well as the bendability of aluminum-plastic pipe (aluminum-plastic composite pipe) is more suitable for use in home decoration, the inner and outer layers of aluminum-plastic pipe are special polyethylene materials, clean, non-toxic and smooth. It can be used for more than 50 years. The middle aluminium layer is 100% insulated from gas permeation and gives the tube the advantages of both metal and plastic pipes, eliminating the disadvantages of each.

The structure of the aluminum-plastic pipe is from the inside out: PPR--hot melt adhesive--aluminum layer--hot-melt adhesive--PPR and other five-layer structure of the new pipe, the aluminum-plastic pipe has both the flexibility of the PPR pipe and the rigidity of the metal pipe, which is mainly used in wall-hung boilers, radiators, air energy engineering, water heaters and other fields, so how are the aluminum-plastic pipes connected together?

Between aluminum-plastic pipes and aluminum-plastic pipes, between aluminum-plastic pipes and PPR pipes, PPR pipe fittings need to be connected, and between aluminum-plastic pipes and PPR pipe fittings, hot-melt connection should be used, and special hot-melt machines should be used for installation.

The aluminum-plastic pipe is connected with the metal pipe fittings, and the PPR pipe fittings with metal pipe fittings should be used as the transition, and the pipe fittings and the aluminum-plastic pipe should be connected by hot melt, and the metal fittings or sanitary ware hardware fittings should be connected with threads.

Aluminum-plastic pipes can be in the form of rubber ring interface, adhesive interface, flange connection, etc. The rubber ring interface is suitable for the connection of pipes with a diameter of D63-D315mm; The bonding interface is only suitable for the connection of pipes with an outer diameter of less than 160mm; Flange connections are generally used for the connection of hard PVC pipes and cast iron pipes and other material valves. High-density polyethylene plastic pipes can be hot-melt connected.

When the polyethylene pipe is connected with the metal pipe, it is connected by a steel-plastic transition joint.

When the rubber ring is connected, the inner diameter of the rubber ring should be several times the outer diameter of the socket end, and the compression rate of the diameter of the rubber ring section is generally 40%. Before installation, the groove of the rubber ring in the socket, the working surface of the socket end and the rubber ring should be cleaned, and there should be no soil or other sundries.

The rubber ring is correctly installed in the groove area of the rubber ring at the socket, and it is not installed in reverse or twisted, and the rubber ring can be soaked with water for the convenience of installation, but the rubber ring cannot be installed with lubricant to prevent the rubber ring from popping out when the interface is connected.

When hot melt connection, high-density polyethylene plastic connection can be divided into detachable connection and non-detachable connection. The detachable connection ports are flange interfaces, exposed connection ports and socket flexible interfaces. The non-detachable interfaces include socket type electric hot melt interface and butt type electric hot melt interface.

The polyethylene pipe wall is smooth, and it is not suitable to use the adhesive interface, nor should it be directly threaded on the pipe wall to make a threaded connection interface.

How to connect the steel slow-plastic composite pipe and the PPR pipe can be connected by double hot melt, the operation is as follows: 1. Select a special PP-R PE fusion splicer (1200W, 260°C), and check whether the surface of the hot melt die, transition joint and pipe Chenzhou module is clean, and the temperature reaches 260°C (green indicator light is on); 2. The pipes and fittings that have been welded into the transition joint are inserted into the hot melt die at the same time to be heated to reach the specified depth; 3. After reaching the specified heating time and sufficient endothermic melting, it is observed that there is a uniform melt overflow, and the transition joint and pipe fittings are immediately removed from the die; 4. Within the specified conversion time, quickly insert the transition joint into the pipe fitting to the corresponding depth along the axis direction without rotation, maintain a certain pressure, cool and fix the connection under pressure, and it is strictly forbidden to twist and rotate.

Aluminum-plastic pipe, ppr pipe connection, only need to use a plastic (all-plastic elbow) direct connection, aluminum-plastic pipe (all-plastic elbow) is directly connected with plastic hot melt, direct 4102 ppr pipe and plastic (all-plastic elbow) is also hot-melt connection, the specifications of pipes and pipe fittings are unified, the connection will heat the pipe and pipe fittings, and at the same time the key melting, and then immediately insert the straight pipe 1653 line pipe, the welded pipe contact performance is good, the success rate is high.

Aluminum-plastic pipe joint fittings.

The connection of this method must be of the same type, the material of these two pipes is PPR pipe, which can be connected by hot melt, and the aluminum-plastic pipe and PPR pipe are connected by direct plastic joints, which will not leak, safe and reliable, and it is worth reassuring.

With a PPR fitting: inner wire direct (PPR one end is connected to the PPR tube, inner wire one end is directly connected to the ferrule outer one).

Add a ferrule copper pipe fitting: the outer wire is direct (one end of the ferrule is connected to the aluminum-plastic pipe, and one end of the outer wire is directly connected to the inner wire of the PPR fitting).

The classification and connection methods of PPR pipes and fittings are introduced, which is simple to operate and no longer troublesome to plumbers.

Use the upper pipe fittings, and then use a hot melt machine to heat the pipe and pipe fittings to a certain extent, and then put the pipe into the pipe fittings, and the connection is successful after cooling.

PPR is connected with a hot melter, which can be fixed with screws on various fixed hot melt dies This die is melted pipe fittings on one side and melted pipes on the other side, which is just easy to install.

The fusion of PPR should be controlled in a certain range, the temperature is too low, the plastic is not melted well, the joint is easy to leak, and the temperature is too high to decompose. So it's important to control the temperature. Generally around 250.