What kind of water pipes should be used in every space in the home? Summary of pipeline procurement in different functional spaces

Kitchen water supply pipe

Generally speaking, water supply pipes usually use environmentally friendly PPR pipes, and galvanized pipes and copper pipes are also mainstream pipes. This paper mainly introduces the main points of purchasing PPR tubes.

(1) Look: high-quality PPR water pipes have smooth appearance and complete signs, and even accessories will have brand names, but inferior products are not as good as them. Most inferior PPR tubes have rough appearance.

(2) Smell: Whether there is smell. The main material of PP-R pipe is polypropylene. A good pipe has no taste, and a bad one has a strange smell. It is likely that polyethylene is mixed instead of polypropylene.

(3) Pinch: PP-R pipe has considerable hardness, and it is definitely not a PP-R pipe if it is pinched into a deformed pipe.

(4) Crushing: A good PP-R pipe is "tough", and it is not a good PP-R pipe if it is too easy to crush. However, strong hardness does not mean good elasticity, and consumers will have doubts about the unbreakable PP-R pipe. Because some unscrupulous manufacturers improve the hardness of pipes by adding too much impurities such as calcium carbonate, such pipes are prone to brittle fracture after long-term use.

(5) Combustion: Igniting combustion is intuitive and useful. PP-R pipes mixed with recycled plastics and other impurities in raw materials will emit black smoke and have a pungent smell; Good materials will not emit black smoke and smell after burning, and the molten liquid will still be clean after burning.

(6) Size: 20mm and 25mm are mainly used for home decoration (commonly known as 4-charge and 6-charge respectively), of which 4-charge is used more. The general manager has six in charge and four in charge.

Tip: The water inlet part of the kitchen sink faucet is a hose, usually two. The hose is matched when you buy the faucet, but we need to measure the length of the hose before you buy it.

Kitchen sewage pipe

(1) Kitchen sewer system

There are two main types of drainage in kitchen sink: downward drainage and lateral drainage.

Drainage: Drainage means that the drainage outlet is on the ground, the sewer pipe passes through the floor vertically, and the pipe leads directly to the downstairs. I am used to installing a return bend at the bottom, so that if there are other launches, I can use the return bend.

Generally, a 50-degree bend is used for launching. If there are other launches, add a tee and use the inclined tee in the above way to make the water flow smooth. Many times, the water in the kitchen is complicated. The waterway is difficult mainly because the place is too small. There are other electrical appliances in the cupboard, such as garbage disposal, kitchen treasure, water purifier and so on. Some have to be connected to a washing machine.

Side drainage: the side drainage outlet is on the main kitchen pipeline, above the ground, and part of the sewer pipe leads horizontally to the main kitchen pipeline. There is a bend in the sewer under the floor. If a return elbow is installed on the floor, it is double deodorization, while the side drainage means that the sewer pipe is horizontally connected in the main sewer pipe, and generally only one return elbow can be installed.

Before you start designing, you must have a general idea. After designing on the drawings, the most important step is to "draw" on site, that is, connect the pipe fittings virtually and rehearse under the cabinet, because the design on the paper is flat, and there will be a big gap in three-dimensional installation. After the site design, the next step can be formally installed.

(2) Kitchen sewer pipe materials

At present, sewer pipes and fittings are generally made of PVC, and the quality of sewer pipes in large building materials supermarkets is not bad. PVC sewer pipe is easy to install.

There are 50, 40 and 32 specifications for the sewer pipes of basins and pools in general kitchens. These numbers represent the diameter of pipes, that is, 5 cm, 4 cm and 3.2 cm, and so do pipe fittings. Commonly used pipe fittings are sewer pipe, tee joint, 90-degree elbow, 45-degree elbow and return elbow.

There are also various reducers, which can connect different types of pipes together. Note that there are two kinds of back bends, one is round, the other is triangular, and the back bend is round, which has more installation space.

Here is a special introduction to the expansion joint in PVC pipe fittings. If both ends are rigid pipes, they must be connected by expansion joints, otherwise they cannot be connected. The expansion joint acts a bit like a "wanderer" in galvanized pipe. When I opened the basin, I unscrewed the expansion joint and took it out together with the basin and the pipe.

(3) the size of the kitchen sewer pipe

When it comes to the choice of kitchen sewer pipe size, we first need to look at the size under the kitchen sink, and then buy a kitchen sewer pipe with the same size according to this size. The size of kitchen sewer mainly depends on pipe diameter, caliber, internal code, external diameter, length, etc., while the standard caliber is about 30 mm

At present, the commonly used sizes are: 32, 90, 50, 40, 75, 1 10, 125, 160 (in mm). These kitchen sewer pipes are mainly used for decoration under the kitchen sink. According to the size of this kitchen pipe, there are also stainless steel and PVC.

Kitchen lampblack machine pipeline

The kitchen smoke exhaust pipe adopts flame retardant PVC pipe, aluminum foil corrugated pipe and stainless steel pipe. The exhaust pipe of the range hood is very important. Nowadays, plastic pipes are widely used in the market, with low cost and practicality. Aluminum foil pipe is troublesome to use and needs to be installed in a ventilated place. There is also a kind of stainless steel pipe, which is not very good. So plastic pipes are more popular. Next, we mainly compare aluminum foil corrugated pipe and flame retardant PVC plastic pipe.

(1) price

Aluminum foil pipe is made of soft aluminum foil and supported by coils of steel wire, so the cost of aluminum foil pipe is higher than that of plastic pipe.

(2) Fire resistance

Aluminum foil does not burn, and plastic is flammable. Can it be concluded that plastic pipes are not desirable? No, because the range hood can't smoke into the flame, let alone the position of the exhaust pipe, and the fire prevention on the exhaust pipe is basically unnecessary.

(3) service life

Compared with plastic, aluminum foil is not easy to age and has a longer service life. However, it will take decades for this kind of plastic to age to the point where it is unusable. Plastic is afraid of the sun, and the exhaust pipe is installed in the dark kitchen. In places where the sun does not shine, the aging is very slow, and it can be "life and death" with the range hood.

(4) Collision resistance

Aluminum foil is soft and plastic is tough. The aluminum foil tube is easy to be scratched by burrs, so it is best to protect it when passing through the hole of the hanging cabinet to avoid being damaged by burrs at the hole. Plastic pipes are strong and need no extra protection.

(5) Noise

Because aluminum foil is soft and tough, it is quieter during ventilation.

Toilet pipe

Toilet tap water pipe

PPR pipe is the mainstream: at present, PPR pipe is widely used in toilet water supply. You should also distinguish between hot and cold water pipes when purchasing. When purchasing, hot water pipes can be used, and hot water pipes can also be used as cold water pipes, but cold water pipes cannot be used as hot water delivery pipes.

Generally, the water inlet pipe is DN20(De20).

High-end users of copper pipes: occupying a monopoly position in water supply and drainage systems in developed countries or regions. For example, in Hong Kong, copper pipes account for about 70% of the market share, and copper pipes are required for the domestic water system of residential buildings. The penetration rate of copper pipes in old developed countries such as Britain is higher. At present, copper pipes are mainly concentrated in high-end users.

Key points of purchase: high-quality water supply pipes should be able to withstand vibration impact, water hammer, thermal expansion and cold contraction. , and can withstand the test for a long time, no water leakage, no burst; When choosing water supply pipeline, we should focus on whether the pipeline will cause harm to human health.

Bathroom sewage pipe

What are there? The toilet includes washbasin sewer, toilet sewer (sewage pipe) and floor drain sewer. If there is a shower room, there is a floor drain and sewer pipe in the wet area and one in the dry area.

Material: PVC pipes are mainly used for drainage pipes. Because of their low cost and convenient construction, they are widely used for drainage pipes.

Size: There are two launching methods, namely, waste pipe De50 and sewage pipe De 1 10.

Toilet ventilation pipe

If it is a civil building, the common toilet ventilation pipe is PVC pipe with a pipe diameter of 1 10 mm.

Balcony pipe

Balcony tap water pipe

Whether or not to install water pipes on the balcony and how to install water pipes are determined according to your own situation. At the same time, it depends on whether the developer has reserved a sewer in the balcony. If it is not reserved, the drainage problem will become a big problem that is difficult to solve after installing water pipes, so special attention should be paid.

If the developer reserves a drainage pipe, it can be decided according to the situation of each family. For example, if your balcony is mainly used for washing and drying, then you may need a water pipe. If the water pipe is used, it is best to be waterproof to prevent the balcony from leaking and blocking. So as not to cause troubles in life.

And if the balcony is mainly for enjoying the cool, then there is no need to install water pipes, which can avoid the drainage troubles caused by improper use in many lives, and can also leave decoration expenses, so it is more convenient.

Balcony sewer pipe

Old-fashioned balconies generally have only sewer pipes and no water pipes. If you put a washing machine on the balcony, you must install a water pipe indirectly from hygiene. But notice that the water in this sewer pipe is connected with the rainwater pipe in the city. Washing powder will flow into the rainwater pipe and finally into the river, causing damage to the fish pond. Some provinces have directly connected balcony downpipes to sewage pipes.

At present, the most common and common balcony sewer pipes (sewage pipes) are generally 1 10PVC drainage pipes and 75PVC drainage pipes.

Sewer pipeline guarantee

Aluminum alloy tile guarantee

This practice is comparable to that recommended by everyone, because the construction is not too complicated, and the effect is beautiful and the sound insulation effect is good.

The construction step is to make a frame with aluminum alloy according to the size around the pipeline, then fill the frame with materials such as sound insulation cotton, and then stick the tiles outside the frame, which looks like a whole with the tiles next to the bathroom.

The sound insulation effect of this construction method will be better. If it is the master bathroom, it will be quite difficult to hear the sound of water upstairs in the middle of the night.

Wooden keel guarantee

This method belongs to the second recommended method. First, we make a keel around the pipe with wood, and then we can fill it with some sound insulation cotton. After wrapping the pipeline, we stopped laying cement boards, gypsum boards and other fixtures.

This construction method is suitable for some bathrooms without tile center, which looks more integral and beautiful. However, the keel has always been made of wood. In the humid bathroom space, it is more prone to mildew and decay, reducing service life.

Red brick wrapped water pipe

This construction method can be said to be an outdated method. I don't advise you to use this method. Although this method is simple and not easy to deform, the space occupied by the pipeline will be relatively large.

In particular, some small-sized bathrooms have relatively small space. If all of them are installed in this way, the applicable space will be smaller, and the sound insulation effect of this method can not be guaranteed, which will have a certain impact on our lives.