Propylene pipe diameter 50. Polypropylene pipe for water supply and heating: diameters, dimensions
- By what principles is the inner diameter of polypropylene pipes selected when choosing a material for a water supply system;
- Where are polypropylene pipes of large diameters used;
- And what diameter is a polypropylene pipe worth buying for a person who is going to mount a new home plumbing.
Let us begin, however, with a few general remarks.
Scope of application
Polypropylene pipes appeared on the market quite recently, but have already gained popularity.
The reason is their undoubted advantages compared to competitors:
- They are not subject to corrosion;
- Not afraid of dampness and aggressive environments;
- Cheap;
- They are not electrically conductive and, therefore, guarantee that electrochemical processes in the plumbing or heating system will not destroy aluminum radiator, and the owner will not be shocked if the washing machine malfunctions;
- Easy to mount;
- They have an aesthetic appearance.
However, internal water pipes are not the only habitat for polypropylene.
It is also used for:
- ventilation. Polypropylene pipes of large diameter are light and do not create a significant load even on partitions made on the basis of a wooden frame with wall paneling or plasterboard.
Until recently, only tin boxes could be seen in ventilation systems. Everything is changing…
- sewers. The resistance of the material to aggressive environments is very useful here.
- Outdoor cold water pipes for several houses. On the one hand, polypropylene is less mechanically strong than its main competitor in this area, cast iron.
Polypropylene water pipes laid under the roads need additional protection - a reinforced concrete box.
But they do not overgrow with deposits. In addition, the elasticity of the material will keep the pipe intact even when it freezes: it will simply stretch, and after thawing it will return to the old diameter.
Classification
The table of the most common types of polypropylene pipes looks like this:
RRW
This is how pipes with increased impact strength are marked. They are traditionally used in the installation of underfloor heating systems (it is not surprising to stumble on a pipe, but if it cracks at the same time, such a pipeline is worthless) and in cold water supply systems.
PPH
As a rule, these are large-diameter polypropylene pipes intended for ventilation systems and water pipes with cold water. They are afraid of temperature.
PPR
The most common and popular pipes. Valued for their versatility. They tolerate high temperatures well and are suitable for cold, hot water and heating systems.
As you might guess, all of the above pipes differ primarily in the type of plastic used. Minor additions can make polypropylene more flexible or heat resistant.
Reinforcement
However, there is another way to change the mechanical properties of pipes - reinforcement.
Pipe reinforcement is performed:
- aluminum foil. The aluminum layer can be located outside or between two layers of polypropylene.
- fiberglass. In this case, the middle layer of a three-layer pipe is a mixture of polypropylene with fiberglass fibers.
Reinforcement makes the pipe more durable and reduces its coefficient of thermal expansion.
Tip: if you are deciding which type of reinforcement to prefer, it is better to opt for fiberglass.
Such pipes under no circumstances delaminate, losing mechanical strength. In addition, they do not require installation during installation.
Diameter
Finally, pipes are classified according to their permeability. The inner diameter of a polypropylene pipe determines how much water it can pass per unit of time. The outer diameter is not important for calculating the patency, however, it, and hence the thickness of the pipe walls, determines its strength and ability to withstand water pressure.
Cross-country ability calculation
In the general case, for a rough calculation of the required inner diameter of the pipe, there is a simple formula:
In it, Qtotal is the total peak water flow, the number Pi is taken equal to 3.14, and V is the speed of water movement through the pipes. The value of the last parameter is taken for thick pipes at 1.5-2 meters per second, for thin pipes 0.7-1.2. The difference is due to the fact that the smaller the diameter of the pipe, the greater the surface / clearance ratio of this pipe. Simply put, in a thin pipe most of the volume of water passing through it will be decelerated against the walls.
Polypropylene pipes with diameters of 10-25 millimeters are selected based on a lower velocity value, polypropylene pipes with diameters of 32 mm and above - according to a larger value of V.
In each group, it is worth focusing on the maximum speed value, since polypropylene has a very smooth surface. In relation to the water supply system, this means minimal losses due to friction of water against the walls.
An accurate calculation of the permeability and diameter of the pipe is important if the water supply system is primarily designed apartment building. If you use a pipe with a diameter smaller than necessary, then in the evening, at the peak of water consumption, the upper floors will simply be left without it.
Of course, there is always a temptation to play it safe and take a pipe with a diameter much larger than the calculated one. But here we should not forget about the economic component of the project: the larger the diameter of polypropylene pipes for water supply, the greater their cost. Add to this the more expensive ones, and the result is a very significant expense, which can be easily avoided.
Polypropylene pipes of large diameter are not used where smaller ones can be dispensed with, for another reason, again related to savings. Remember how you wash your face in the morning. It often takes a long time to drain the tap water before it gets hot, right? And this number is greater, the larger the diameter of the pipe. In the absence of water intake, everything is warm hot water filling the pipe is uselessly dissipated in the atmosphere.
Tip: by making the hot water system circulating, you will avoid the need to drain the water for a long time before it heats up.
In a private house, a simple circulation pump and a second pipe for returning water to the boiler are enough for this.
If polypropylene pipes are used during the installation of a water supply riser, their inner diameter, as a rule, is taken about 25 millimeters for five-story houses and 32 for nine-sixteen-story buildings. However, when choosing a diameter, an accurate count of the number of plumbing fixtures is usually used.
Polypropylene pipes of large diameters are usually used for supplying cold water to one or more houses. Polypropylene is never put on heating mains: the water temperature in the supply pipeline is too high. And when testing trails for density, subjecting relatively soft polypropylene to enormous pressure means looking for adventures on your fifth point.
With cold water, there are no such dangers: the temperature is constantly low, the pressure is relatively low, so recent times communal services are gradually abandoning cast iron and steel mains in favor of a new material. Pipes polypropylene diameter 500 millimeters and even more can often be found in pipelines that supply water to entire neighborhoods.
Private house or apartment
However, if you are designing a water pipe for a small private house or your apartment, you don’t need a complicated calculation. The number of tapping points is small, and the price difference between the pipes different diameters with a small volume of purchases, even a modest budget will not undermine.
Look inside the mixer body. See how the water enters the sink through the tiny holes? Polypropylene pipes should have an internal diameter of just enough for the very holes in the mixer to be the bottleneck of the water supply. Remember: the permeability of the pipe is equal to the permeability of its narrowest point.
That is why the owners of houses and apartments, without wasting time on complex calculations, simply buy and install polypropylene pipes with a diameter of 20 mm. With any reasonable number of washbasins, sinks, bathtubs and bidets, this is enough for the eyes.
Conclusion
As you can see, the diameters of polypropylene pipes are selected without much difficulty. In most cases, it’s enough just to take the cheapest pipe - and go ahead, create and create 🙂
In this article, we will understand in detail how to choose the right inner diameter of polypropylene pipes for water supply, where large diameters of PPR pipes are used and how they are classified.
However, it is worth briefly describing the general concepts first.
Where are polypropylene pipes used
Polypropylene pipes appeared on sale not so long ago, however, they are already very popular.
There are a number of advantages that distinguish them from the background of analogues:
- the material is not subject to oxidation;
- can be used in environments with aggressive conditions;
- low cost;
- do not conduct electricity;
- pipes are easy to lay;
- look great on the outside.
It should be noted that PP pipes can be used not only as an internal water supply.
Additionally, they can be used to equip:
- Ventilation systems. Even the large outer diameter of polypropylene pipes keeps them light, without creating large loads on wooden frame partitions and plasterboard sheathing, for example.
- Sewers. The material is not afraid of aggressive substances.
- External plumbing with cold water supply.
Since polypropylene is not as strong as cast iron, it needs protection in some places. If pipes are laid under roads, it is better to build a reinforced concrete box.
The advantages include the fact that deposits do not accumulate on the inner walls of pipes made of polypropylene. Due to its elasticity, such pipes will not be damaged by frost.
Pipe classification
There are tables of diameters of polypropylene pipes. Several types of PP pipes should be distinguished.
PPB
This marking corresponds to impact-resistant pipes. Most often they are used for arranging floor heating and cold water transportation systems.
PPH
Traditionally, these include PP pipes whose diameters are of great importance. They are used in ventilation systems and for transporting cold water, as they are sensitive to high temperatures.
PPR
Such pipes are considered the most popular, because they are distinguished by their versatility. They are not afraid of high temperatures, so they can even be used in hot water systems and for heating.
It is worth noting that all of the above pipes are a variety polyethylene pipes. Depending on the additives, polypropylene can be flexible and heat resistant.
Use of reinforcement
Reinforcement is one of the ways to give pipes special mechanical properties.
Reinforcement is as follows:
- Aluminum foil layer. It can be both external and located inside.
- fiberglass layer. As a rule, it has an internal location.
Thanks to the reinforcement, the pipes are more durable, and their thermal expansion becomes smaller.
This type of pipes never loses its mechanical strength and does not delaminate, and cleaning is not required for their installation.
Cross-country classification
Additionally, pipes are classified by patency. The internal size of polypropylene pipes indicates how much water they can pass in a certain period of time. The external dimensions of the PP pipe in this case do not matter. This suggests that the wall thickness can be any - only how strong the pipes will depend on this parameter.
How to correctly calculate the patency of pipes
D = √(4 - Qtotal - 1000/π∙V), where:
Qtot - limiting total water consumption;
V is the speed of water movement.
If the pipes are thick, then the speeds are assigned a value of 1.5-2 m / s, for thin pipes, this value, as a rule, is 1.2 m / s. That is, the smaller the pipe section, the higher the surface / clearance ratio. In other words, in a thin pipe, almost the entire volume of water will slow down against the walls.
PP pipes with sections of 10-25 mm are selected if the speed of water movement is small. But if the V values are large, then the pipe sections must be at least 32 mm.
In any case, it is desirable to proceed from the highest speeds, since polypropylene has very smooth walls. If a water supply system is installed, then in this case the friction of water on the inner surface of the pipes will be minimal.
The exact values of the patency and cross-section of pipes are of great importance only in the case of designing a plumbing system in high-rise buildings. If you do not use the table of sizes of polypropylene pipes, and choose a pipe with a section smaller than the prescribed one, then during periods with peak water consumption, residents will simply be left without water.
However, there may be a desire to take a pipe with a margin in cross section. In this case, it is worth paying attention to the feasibility of such a decision from an economic point of view. For pipes with a larger diameter, more expensive fittings will be needed. As a result, costs can rise significantly. If desired, this can be prevented, the main thing is to use a rational approach.
PP pipes of large cross-sections are not advisable to use in places where there will be enough thin pipes, again for the purpose of saving. The fact is that when you drain cold water from a tap for a long time, with a large section of the pipe and more water will be spent before the water becomes hot. If there is no water intake, then a significant part of the heat from hot water will simply dissipate idle.
It is recommended to organize circulation system water supply, so you do not need to drain the water each time until it becomes hot. If this a private house, then you only need to install a simple circulation pump, as well as purchase and equip the system with an additional pipe through which water will return to the boiler.
There is a huge assortment of polypropylene pipes for heating and not only on the market. If you are making a water supply riser, then polypropylene pipes with a cross section of 25 mm are suitable if it is a five-story house, and 32 mm for houses from nine to sixteen floors. In this case, when determining the diameter, it is worth considering the exact number of plumbing fixtures that will be used in this system.
Large-section polypropylene pipes are most often used to supply cold water to one or more houses. Polypropylene is not used for laying pipes in heating mains, since it does not like hot water. In addition, this is a place where a large load will act on the pipes, from which soft polypropylene can simply be damaged.
With cold water, everything is much simpler - due to its low temperature and low pressure in the system, cast iron is increasingly being abandoned in favor of polypropylene when equipping water pipes. Quite often you can find systems with a conditional diameter of polypropylene pipes of 500 mm or more, which feed entire small areas.
If a house or apartment is being equipped
When creating a project for a standard private house or apartment, there is no need to accurate calculations. The number of plumbing fixtures will be minimal, while the difference in price for pipes of different diameters will differ minimally, which will practically not affect the budget.
If you look at the faucet hose, you can see how small their diameter is, that is, through what minimum holes water enters the sink. Taking into account the fact that the cross section of the polypropylene pipe will be much larger, it will always be enough, since this particular hose will be the bottleneck in this case. That is, the patency of the entire system will rest against its narrowest point.
That is why the owners of private houses and apartments do not carry out complex calculations, but simply purchase a 20 mm polypropylene pipe, while saving their precious time. In the vast majority of cases, with a standard number of washbasins, sinks, bathtubs and other plumbing fixtures, such a pipe will suffice with a large margin.
conclusions
We hope everyone figured out what diameter polypropylene pipes are measured by. Selecting them will not be difficult. As practice shows, it is often possible to simply purchase the simplest and cheapest pipe - the result will be a high-quality and properly functioning water canal.
The inner diameter of polypropylene pipes (the table will be given below) allows you to correctly calculate the load on the product during operation.
So, for example, with an outer diameter of 20, the inner diameter can be 16.2 or 13.2, that is, the pipe wall thickness, in the first case it will be 1.9 and in the second case - 3.4.
This indicator in the table makes it possible to select products that are able to withstand operating temperature and expected pressure.
Characteristic features of polypropylene products
Why did you choose polypropylene? Polyethylene or polypropylene, what's the difference?
Both materials are similar, with a lot of physical properties in common. But it turns out that polyethylene is much inferior to polypropylene in hardness!
The production process of the pipes itself:
- does not harm the environment,
- does not have high energy consumption,
- not labor intensive
- does not take up large areas.
Polypropylene pipes are made by extrusion (punching). Fittings and fittings are manufactured by injection molding. Only for pipes - PN20 universal integral fittings are used.
It's important to know: polypropylene pipelines are able to withstand the temperature range from -10 to + 90°C. The water in them can turn into ice, but the structure of the pipes will not be disturbed, because polypropylene is an elastic material.
Very often, secondary raw materials are used for production. This approach allows you to keep a relatively low cost for the final product. .
Benefits of using
Advantages of polypropylene products:
- Long term use. It is believed that with a hot carrier, the pipes will last within 50 years, with a cold one within 100.
- The smooth inner surface on which the liquid moves does not contribute to the adhesion of deposits.
- Polypropylene absorbs noise.
- Condensation does not form.
- Resistance to temperature changes.
- Heat exchange is low.
- 9 times lighter than metal.
- Not difficult installation.
- Does not require further maintenance.
- High elasticity of polypropylene products.
The high quality of the polypropylene line allows it to be used for:
- supplying houses with water;
- connections to the boiler;
- plumbing supply;
- installation of a heating network, etc.
Compliance with GOST
The only standard by which quality is determined is GOST R 52134-2003. It compares the characteristics of all products that are used for the installation of heating systems and water supply.
The document contains all quality standards for thermoplastic pipes. It takes into account the dimensional parameters of the product, for what operating conditions it is intended, and the permitted period of use.
Note: thermoplastic piping quality, suitable for transportation drinking water, and meets Russian standards. The suitability of the thermoplastic pipeline for contact with liquid food products is confirmed by national certificates of the EU countries.
The same GOST is used to determine the wall thickness of the product. When calculating the need for the number of pipes, all operating conditions are taken into account, as well as the desired service life. The calculation takes into account not only what parameters pipes should be taken and from what material.
Classification
When choosing pipes, be sure to take into account their ability to withstand operating pressure and temperature!
Suitable for assembly work, both in residential and industrial premises.
- PN 10 this grade is made in a thin-walled version, suitable for supplying cold water up to +20 ° C, and can also be used for installing underfloor heating, where water up to +45 ° C, withstands 1 MPa, 10.2 kg / cm².
- PN 20 this brand is considered universal, applicable for water + 80 ° C, permissible 2 MPa, 20.4 kg / cm².
- PN 25 is a pipe brand with an aluminum layer, suitable for carrier transportation up to +95°C, and 2.5 MPa, 25.49 kg/cm².
- PN 16 this grade can be used where the liquid carrier temperature is not higher than +60°C, at 1.6 MPa, 16.32 kg/cm².
Differences of polypropylene pipes according to the raw materials used
PPR. If the products have this marking, then for their production a random copolymer of polypropylene was used, which provides thermal stability. Products with this marking can be used for lines designed to transport hot liquids, and for cold ones. Basically, this brand is used for the installation of underfloor heating.
PPH. Additives are added to raw materials that provide higher strength to products. This brand of simple polypropylene products is used mainly for the installation of cold water supply systems.
PPB. This marking indicates that a complex block copolymer of polypropylene was used for production. Fittings are made from this brand, which are characterized by high strength.
PPs. Products with similar designations are used to supply hot liquids. Excellent option for installation of heating mains.
Choice by size
In principle, the length of the products can be made to any length, but usually they are made four meters. They are distinguished by their diameter. The diameter determines the purpose of the product.
For example, products with a diameter of:
- 110 mm are used for technical needs.
- 200 mm are used in structures where there are large water flows, such as hotels, hospitals, etc.
Take note: the choice is made taking into account the inner diameter, allowable pressure and maximum allowable temperature indicators. The choice is made according to special tables, where all parameters are indicated.
If the liquid medium contains a certain amount of aggressive chemicals, then pipes Ø 63 mm are suitable for transportation. They are also used for the installation of systems transporting compressed air.
Ø 63 and 25 mm are used for connecting radiators, distribution to apartments, installation of underfloor heating, etc. Ø 20-32 mm are better suited for individual construction. They have good carrying capacity and can bend easily.
Mounting
Installation methods depend on the purpose for which the pipeline is intended. If water is to be supplied, in this case, one-piece connections should be used, which are made by a welding machine.
There are other options for connecting pipes:
- when Ø is less than 63mm, socket welding can be used.
- butt welding is used for large diameters.
- coupling welding, that is, a device is used - a coupling.
Good to know: such pipes have a high degree of weldability. Therefore, the assembly of the system is carried out by thermal welding. The installation of the line is carried out only once.
Watch the following video about the ratio of the diameters of various pipes:
Polypropylene pipes are increasingly used in housing construction and industry. These facilities require plumbing that meets different operational requirements. Polypropylene pipe classified according to the composition of the material, working pressure. Based on these indicators, the appropriate option is selected.
Polypropylene pipeline is very actively used in civil and industrial construction
Where polypropylene with a diameter of 20, 25, 32 mm is used
Polypropylene has a number of indicators that favorably distinguish it from the background of materials. Among them are resistance to corrosion, aggressive environments and humidity, acceptable cost, ease of delivery and installation. Due to its performance, polypropylene is used in the arrangement of:
- internal and external water supply;
- sewerage;
- ventilation;
- heating systems.
Polymer models are lightweight, so they are suitable for arranging ventilation. Pipelines, even of a large size, will not give an increased load on the partitions of the building, they begin to displace massive metal boxes.
As for outdoor plumbing systems, here polypropylene competes with cast iron. The latter has greater mechanical strength. However, this problem can be solved by enclosing the polymer drain in a reinforced concrete frame. The advantages of the material over cast iron are bandwidth and elasticity. Deposits do not form on polypropylene walls. After freezing during an increase in temperature, the diameters of polypropylene pipes acquire their previous values.
Pipes made of this material are best used indoors.
Classification by limiting the working pressure: a soldering iron for welding heating pipes is useful
The classification of polypropylene pipes is carried out according to pressure indicators. Below are the lines that are most often used in plumbing.
- PN 10 (N 10). Designed for cold water supply and floor heating. The upper temperature limit is 45 degrees. The wall thickness ranges from 1.9 to 10 mm. Outer diameter from 20 to 110 mm. Suitable for cold water supply. Working pressure indicator 1.0 MPa, designed for low pressure.
- PN Suitable for arranging cold and hot water supply, the upper temperature limit is +60 degrees. The pressure limit here will be 1.6 MPa. It should be noted that this type is rarely used in construction.
- PN 20 (N 20). Designed for hot and cold water supply. Maximum temperature +80 degrees. Walls up to 18.4 mm thick. within 16-110 mm. When arranging 32 mm. Pressure limit 2.0 MPa, designed for medium pressure plumbing. The most common variety for water supply systems.
- PN 25 (N 25). Suitable for hot water supply and heating systems. The upper temperature limit is 95 degrees. The outer diameter of polypropylene pipes ranges from 21.2-77.9 mm. Working pressure increased to 2.5 MPa. Reinforced with aluminum for durability impact and an increase in temperature.
The requirements for the cold water supply pipeline are mostly met by grades PN 10, PN 16. The following grades (PN 20 and PN 25) are preferred for hot water supply and heating systems. To compensate for the linear expansion of the material, adjustments are made to the design of the water supply system.
PN 25 is mainly used for hot water, keep this in mind when installing plumbing
The polypropylene pipe is used for water supply and heating.
Classification according to the composition of raw materials: reinforced and others
Three main groups of polymer pipelines are presented, differing in technical characteristics.
- RRV. This type is used for floor heating. These polypropylene pipes are used for water supply (for cold water). They are characterized by special impact resistance. The property is achieved by the structure of the polymer, whose molecules, different in structure, are built according to a certain principle.
- RRN. They are mainly used in industry for sewerage equipment, water disposal, cold outdoor water supply, ventilation systems. They are characterized by impact resistance, due to the addition of specific additives to the composition of raw materials, they acquire antistatic and other required properties. This type is characterized by large sizes of polypropylene pipes. Products with a low melting point, which is why they are not used for heating systems.
- PPR. Most often used in residential construction. Used for heating, water supply, sewerage. They are resistant to temperature fluctuations, the permissible lower limit is -170 degrees, the upper one is 1400. Products are produced with a diameter of 16 to 110 mm. The material molecules have a crystalline structure.
Products made of polypropylene grade PPs have the highest indicators of strength, wear resistance, impact resistance. Such (both hot and cold), for ventilation and heating. Available in sizes from 20 to 1200 mm, from the line you can choose the appropriate diameter of polypropylene pipes for heating.
How to determine the diameter of a polypropylene pipeline for proper installation
When you need to navigate in the presented sizes. For a private house, a suitable diameter value of 20 mm. During the construction of high-rise buildings, the task becomes more complicated, since, depending on the number of consumers, the diameter water pipes in the apartment and the house varies. To calculate it correctly, you will need the following parameters:
- flow velocity, m/s;
- total water consumption;
- number pi.
The formula for calculating the diameter looks like this:
D=√(4-Q - 1000/πv).
Denoted by the letter v, the flow rate determines the inner diameter of the polypropylene pipes. For a small diameter, the value is on average 0.7-1.2 m/s, for a pipeline with a large diameter up to 2 m/s. π is taken as 3.14 and Q indicates the water flow.
Products made of polypropylene have already proven themselves in plumbing. For a durable water supply, you need to choose a suitable ruler and install it according to the technology. A polypropylene pipe can become the basis for almost any communication.
In modern building technologies, we are increasingly less likely to see the use of pipes made of metals that have become familiar for the installation of pipelines. Today, more and more people are switching to the use of polymeric materials. For example, for laying sewers they are used from PVC, and for heating systems - propylene. They are much better, more durable and more efficient than metal products.
Propylene pipes are used in the following areas:
- Central heating systems;
- Cold water supply;
- Hot water supply;
- Boiler rooms;
- Water floor with heating;
- Risers;
- Irrigation systems in agriculture;
- Transportation of compressed oxygen and chemical solutions.
Classification of pipes made of polypropylene
The classification of polypropylene pipes distinguishes the following varieties:
- reinforced with aluminium. Aluminum can be in the form of a solid sheet, non-solid, can be corrugated. Reinforcement can be performed both along the outer edge and in the middle of the product. Connection with aluminum significantly increases their stability and strength;
- reinforced with fiberglass. Reinforcement is carried out along the middle layer;
- reinforced with composite. Reinforcement is performed by a composite, which includes propylene components and fiberglass. This helps to improve the properties of these products for use in heating systems.
This classification in itself gives an idea of how propylene products are better than steel products.
The main characteristics of polypropylene pipes
Propylene products have become so popular and in demand in the installation of heating systems in modern construction, thanks to the combination of their performance characteristics. Let's take a closer look at these characteristics:
- Excellent wear resistance of products due to their multilayer structure;
- They are not susceptible to corrosion, which makes it possible not to waste resources on painting them;
- High resistance to decay and destruction;
- Small weight, which simplifies their transportation;
- Absence of vibration during the movement of fluid in them and low hydraulic resistance;
- tightness;
- Protection against stray currents;
- Resistance to high and low temperatures;
- Resistance against chemical and mechanical destruction;
- Non-toxic and environmentally friendly;
- Lack of favorable conditions for the emergence of bacteria, microorganisms, as well as scale and mineral deposits;
- Simplicity and convenience in installation and operation;
- Affordable price;
- Versatility;
- Durability and guarantee not less than 50 years of service.
Due to all of the above properties, propylene pipes are widely used in modern building technologies for laying highways and water supply systems. Due to the declared durability and guaranteed long service life, they can be carried out in the form of both open and closed laying, as well as laying on walls.
It should be noted that the long service life of these products declared by manufacturers can be significantly reduced if the temperature and pressure of the liquid do not meet the standards. They can withstand high pressure, but at low temperature. Or vice versa - high temperature at low pressure. Heat at high pressure lead to a significant reduction in product life.
Dimensions of polypropylene pipes for heating
Propylene pipes have different sizes depending on the areas where they are used. The main characteristic is the diameter. Distinguish between inner diameter and outer diameter. The outer diameter depends on the hydrodynamic calculations of the area where the use of this product is planned.
Consider what diameters are used to solve various problems in construction:
- Large diameters over 200 mm are used in the construction of large facilities - shops, hotels, shopping centers, hospitals where a large number of people are planned;
- Diameters in the range from 20 to 32 mm are used for the construction of a small building or a private house. It is convenient to lay them, giving the necessary shape;
- For hot water supply, a diameter of 20 mm is used, and for the installation of risers - 25 mm;
- For the installation of a heated water floor, products with a diameter of 16-18 mm are used. They easily bend, taking the necessary form of laying the system;
The table below will show the interdependence of various parameters for such products:
Dimensions of polypropylene pipes for heating a private house
A special table will help you calculate the dimensions of a polypropylene pipe for any home. Taking into account pressure and temperature differences, using a lot of different complex formulas, which you don’t want to delve into and there is no need, the table will make it possible, depending on the water consumption per unit of time, to determine what diameter of the product is needed for heating this particular house.
We see that, depending on the flow of water, heat flow and water velocity, we can determine which diameter is suitable for heating a house.
However, as practice has shown, it is not necessary to carry out calculations for a private house - in this case it is simply recommended to use propylene pipes with a diameter of 20 mm. This saves us from having to consult size tables, dive into complex technical formulas and makes it possible to determine without much effort what size pipe for heating is best for our house.