Note!

"GIDROPLAST" is your reliable partner in the field engineering systems! With many years of experience in solving problems in the assembly and construction of facilities, we suggest that you familiarize yourself in our catalog with the prices for polypropylene pipes and additional products made of polypropylene.

Mounting polypropylene pipes in Russia is regulated by the provisions of GOST R 52134-2003 "Pressure pipes made of thermoplastics and connecting parts for them for water supply and heating systems", SNiP 41-01-2003 "Heating, ventilation and air conditioning", SNIP 3.05.01-85 "Internal sanitary technical systems ", SNiP 2.04.01-85" Internal water supply and sewerage of buildings "and SP 40-101-96" Code of rules for the design and installation of polypropylene pipelines "Random copolymer". In the European Union, the requirements for the installation of polypropylene pipes are established by a number of technical regulations - standards, a detailed list of which is given in this material.

The main purpose of the installation of polypropylene pipes, regardless of source material(polypropylene homopolymer PP-H, block copolymer of polypropylene PP-B, random copolymer of polypropylene PPRC) and its modifications (Polypropylen-Homopolymer PP-Hs flame retardant, Polypropylen-Randomcopolymer PP-R-el conductive, Polypropylen-Randomcopolymer conductive PP-Rs-flame retardant ) (see details), as well as reinforcement with aluminum foil or fiberglass is to ensure operating conditions under which the pressure and temperature of the transported liquid, and the ambient temperature will not cause internal stresses in the pipeline and its individual nodes that can lead to a violation of integrity or permanent deformations in pipes, fittings and connections. The primary task of installing polypropylene pipes is to compensate for linear temperature changes in the pipeline by changing the direction of the route and without using special expansion joints.

Unlike pipes made of galvanized or stainless steel (see), all pipes made of thermoplastic polymers (see this material) have a high coefficient of linear thermal expansion, which is especially significant in hot water supply and heating systems.

To solve this problem, the pipeline route is conventionally divided by fixed supports into sections that autonomously respond to changes in temperature (or pressure) in the pipeline. Fixed supports (BO) direct the axial elongation to sliding bearings (CO) installed in places where the track direction changes, which, in fact, are compensating devices.

The relative temperature elongation of the pipeline section bounded by fixed supports for polypropylene pipes is calculated by the formula Δl = 0.15 * l * Δt, where:

• Δl- change in the linear size of the pipeline section along the axis of the route, mm;
• l- length of the pipeline section bounded by fixed supports, m;
• Δt- the temperature difference between the pipeline during operation and during the installation of polypropylene pipes, ° С;
• 0.15 - coefficient of linear thermal expansion of polypropylene pipes, mm / m ° С.

Important: Polypropylene pipes reinforced with aluminum foil have a linear thermal expansion that is 2/3 less than polypropylene pipes without reinforcement. Polypropylene pipes, fiberglass reinforced, have a linear thermal expansion, 3/5 less than pipes made of polypropylene without reinforcement.

Linear thermal expansion of pipes PN 10,16,20 made of random copolymer polypropylene and reinforced with aluminum foil polypropylene PP-R pipes for hot water supply and heating systems, depending on the temperature of the transported medium, it can be determined from the nomograms (see below).

Rice. Nomogram of linear thermal expansion of pipes PN 10,16,20 made of random copolymer polypropylene depending on the temperature of the transported medium

Rice. Nomogram of linear thermal expansion of pipes PN 20 made of random copolymer polypropylene, reinforced with aluminum foil, depending on the temperature of the transported medium

Sliding supports during the installation of polypropylene pipes, as a rule, are made of clips, single or double, corresponding to the DN diameter to the nominal diameter of the polypropylene pipe.

Rice. Single and double clips for PP sliding pipe supports

SP 40-101-96 categorically prohibits rigid fixation of the pipeline when installing polypropylene pipes by compressing the pipeline. Therefore, the fixed supports can be made on the basis of sliding supports with limited axial movement by two couplings or a coupling and a tee.

Rice. Fixed support for the installation of polypropylene pipes according to the recommendations of SP 40-101-96

Most often, when installing polypropylene pipes, compensating changes in the direction of the route are used:

The possibilities of the loop compensating elements depending on the nominal diameter of polypropylene pipes are presented in the table below.

d, mm	16	20	25	32	40
Δl, mm	85-90	80	65-70	55	45

Important: Loop compensating elements have drawbacks - when installed on horizontal and vertical pipeline routes, it is extremely difficult to remove water from them, and when installed in horizontal routes - air.

When installing polypropylene pipes, sliding supports are installed on the sides of bends, tees and bends, and all types of compensating devices can be used in the piping system for cold / hot water supply and heating.

SP 40-101-96 makes stringent requirements for:

Nominal outside diameter, mm	Temperature of the transported medium, degrees Celsius
	20	30	40
16	500	450	400
20	550	500	450
25	650	550	500
32	750	650	600
40	850	800	700
50	1000	900	800
63	1150	1050	900
75	1300	1200	1000
90	1500	1350	1200
110	1700	1500	1300
125	1800	1700	1450

Connections made during the installation of polypropylene pipes

The main types of connections in the route during the installation of polypropylene pipes are referred to.

Good day, my reader or reader! In this article, I will briefly list the rules for installing polypropylene pipelines. The main operation when installing polypropylene pipelines is soldering. Let's start with her!

Soldering rules for polypropylene pipes.

Polypropylene pipes and fittings are connected to each other by soldering. The method is simple, but nevertheless, some rules must be followed. We list these rules below:

• The first thing to do is to prepare the welding machine for work - mount the necessary nozzles on the heating surface, install the welding machine on a tripod (the machine must stand on a flat surface), plug it in and set the required temperature on the thermostat (nothing should be set on cheap Chinese machines necessary - they heat up to 260 ° C automatically).
• After the "welder" has warmed up to working temperature, you can start soldering. Before soldering, it is necessary to cut the pipe evenly, remove burrs from its edges and mark with a marker the distance at which the pipe will be inserted into the socket. Manufacturers also recommend degreasing the pipe surface, but it is enough to keep the pipe clean. For pipes reinforced with metal foil, it is necessary to use a special stripping (for pipes with external reinforcement) or a facer (for pipes with internal reinforcement). If the pipe is fiberglass reinforced, then you just need to cut it straight.
• Next, the fitting and the pipe are inserted into the nozzle on the welding machine (it is important to insert the pipe and the fitting straight, otherwise the soldering will be of poor quality) and you start counting the time required to warm up. For different diameters pipe times will be different (we will give it below in the table).

Diameter, mm.	Distance to insert the pipe into the socket, mm.	Heating time, sec.	Soldering cooling time, min
20	17	6	2
25	19	7	2
32	22	8	4
40	24	12	4
50	27	18	4
63	30	24	6
75	32	30	6
90	35	40	8

• After completing the work, you must turn off the welding machine from the network and wait until it cools down. After that, you can twist the attachments and fold it into the drawer. Do not cool the welding machine with water. This will damage the equipment.

For more clarity of everything that is said above, watch this video:

For the installation of polypropylene pipes near walls and in hard-to-reach places you will need a partner. There are difficult cases when you have to use two partners and two soldering irons at the same time. Therefore, look for a companion in advance to conduct installation works.

How to calculate the number of polypropylene fasteners?

Support for polypropylene pipes.

Polypropylene pipes have standards for the number of fasteners per unit of length. This amount depends on the pipe diameter and temperature regime... For clarity, we present these data in the form of a table:

Pipe diameter, mm	Distance between fasteners, mm.
	20 ° C	30 ° C	40 ° C	50 ° C	60 ° C	70 ° C	80 ° C
20	600	600	600	600	550	500	500
25	750	750	700	700	650	600	550
32	900	900	900	800	750	700	650
40	1000	1000	900	900	850	800	750
50	1200	1200	1100	1100	1000	950	900
63	1400	1400	1300	1300	1150	1150	1000
75	1500	1500	1400	1400	1250	1150	1100
90	1800	1600	1500	1500	1400	1250	1200

Now you just need to divide the total footage of the pipe by the distance indicated in the table and you will get the number of fasteners. The location of the mounts must be thought out separately. This is usually done during the project creation process. It is not worth saving on supports, they are needed to protect pipelines from deformations caused by temperature.

Tool for the installation of polypropylene pipes.

For the installation of polypropylene pipes, the following tool is required:

• Welding machine.
• Nozzles - shoe or pair, depending on what kind of welding machine you have.
• Cutter for plastic pipes.
• Marker for marking the pipe.
• Building level.
• Wrench for tightening threaded connections.
• Belt wrench for combination clutches - very convenient thing for tightening combination couplings without hexagon.
• Thread, FUM or anaerobic thread sealant

Wrench for combination couplings.

The list is not too long, but here is the most necessary and it is better not to forget anything. I know from experience that it is extremely inconvenient to work without a belt key and a marker.

Results of the article.

Installation of polypropylene is a fairly simple process and does not require a lot of training. The first time you can ruin a few fittings and meters of pipe, but this is a small price for knowledge and experience and you have to pay it. Moreover, the price of the material is more than democratic, compared to copper or metal-plastic. That's all, write your questions in the comments and press the social media buttons!

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THE GOVERNMENT OF MOSCOW

COMPLEX OF ARCHITECTURE, CONSTRUCTION,
DEVELOPMENT AND RECONSTRUCTION OF THE CITY

STATE UNITARY ENTERPRISE
RESEARCH INSTITUTE
MOSCOW CONSTRUCTION

"NIIMOSSTROY"

When developing the TR, information and technical materials from Aquatherm (Aquatherm - Germany) were used on PP-R80 polypropylene filled with GF glass fiber (brand name "fusiolen") and made of combined pipes (brand name "Faser" , as well as combined pipes with a layer of aluminum foil PP-R80-A1 (brand name "fusioterm-stabi").

When developing the TR, the results of studies on the long-term strength of Fazer combined pipes, the results of pipe tests carried out at NIISantekhniki and Zavod AND Gaztrubplast CJSC were taken into account. The Fazer pipes have a hygienic certificate No. 77.9.6.515.P.2164.4.99 (valid until 23.04.02) and a certificate of conformity in the GOST system No. ROSS DE.AYU85.N00120 (valid until 10.10.03).

Combined pipes PP-R80-GF are recommended for use in internal systems ah cold and hot water supply to buildings and cold supply systems during the construction of artificial skating rinks and ice paths; PP-R80-A1 - hot water heating systems for buildings (with heaters and underfloor heating).

The development of the TR was attended by: Ph.D. A.V. Sladkov, Ph.D. Vlasov G.S.

1. GENERAL PART

1.1. Real technical advice apply to the pilot construction of internal systems of cold and hot water supply (temperature no more than 75 ° C) and heating (temperature no more than 90 ° C) of residential and civil buildings in Moscow from pressure combined polypropylene pipes: "Fazer" (hereinafter pipes "PP -R80-GF ") and" fusioterm-shti "(hereinafter referred to as" PP-R80-AI "pipes) and are the development of the industry standards BCH 47-96 and BCH 69-97.

1.2. In accordance with SNiP 2.04.01-85 (change No. 2) PP-R80-GF pipes should be used for all water supply systems of buildings (except for a separate fire-fighting water supply network), provided that they are hidden in baseboards, grooves, mines, mines-packages and canals (except for connections to sanitary technical devices).

1.3. Open laying of water pipelines from PP-R80-GF pipes is allowed in production and warehouse premises, as well as in technical floors, attics and basements, in places where mechanical damage is excluded.

1.4. It is allowed to use PP-R80-GF pipes for trial installation of refrigeration piping systems, artificial skating rinks, ice tracks constructed in closed spaces.

1.5. PP-R80-AI pipes should be used taking into account general requirements SNiP 2.04.05-91 (change No. 2) for heating systems, mainly with a hidden gasket in baseboards, behind screens, in grooves, mines, canals.

It is not allowed to lay PP-R80-AI pipes in rooms with fire hazard category "G".

1.7. For heating systems of buildings in Moscow, it is recommended to use PP-R80-AI pipes, the range, standard sizes and weight of which are given in table. 2.

1.8. The main physical and mechanical properties of PP-R80-GF and PP-R80-AI pipes are given in table. 3

1.9. Complete with PP-R80-GF and PP-R80-AI pipes and PP-R80 fittings for contact welding socket, combined fittings with galvanized brass threaded inserts and brass threaded parts.

The specified fittings must be designed for a nominal pressure of 2.5 MPa.

table 2

Range and weight of PP-R80-AI pipes

Outside diameter, mm	Wall thickness, mm		Weight 1 m, kg
		inner layer made of PP-R80

Note: PP-R80-AI pipes with a diameter of 16 mm are supplied in coils, with a diameter of 20 mm or more - in lengths of 4 m.

Table 3

Basic physical and mechanical properties of PP-R80-GF pipes and PP-R80-AI pipes

	Property indicators	unit of measurement	Normalized value of the indicator	Notes, reference indicators
	Tensile yield point, not less			Thermal conductivity coefficient at 20 ° С for PP-R80-GF pipes -0.15 W / m ° С; for PP-R80-AI pipes - 0.24 W / m ° С
	Elongation at break, not less			Linear thermal elongation coefficient: for PP-R80-GF pipes - 0.35 · 10 -4 1 / ° C; for PP-R80-AI pipes - 0.3 × 10 -4 1 / ° С
	Impact resistance at two-support bending at a temperature of 0 ° С (fraction of destroyed samples), no more
	Resistance of PP-R80-GF pipes at constant internal pressure (complete with connecting parts in welding, the control time of tests (without destruction) is not less than:			Coefficient of equivalent uniform grain roughness - 0.0106 mm Elastic modulus at 20 ° С of PP-R80-GF pipes - 1200 * N / mm 2
	Temperature 20 ° С, test pressure 5 N / mm 2
	Temperature 95 ° C, test pressure:
	Resistance of PP-R80-AI pipes at constant internal pressure (assembled with connecting parts for welding), control test time (without destruction) not less than:			Modulus of elasticity of PP-R80-AI pipes - 800 * N / mm 2
	At a temperature of 20 ° C and an initial stress in the inner layer of the PP-R80-AI pipe wall 16 N / mm 2;
	The same at a temperature of 95 ° C and stress: 4.5 N / mm 2
	Melt flow rate PP-R80

*Note: The standards should be clarified according to the test results.

A list of possible fittings and elements is given in Appendix 1.

2. DESIGN OF PIPELINE SYSTEMS FROM COMBINED POLYPROPYLENE PIPES

2.1. When designing internal cold and water pipelines hot water PP-R80-GF pipes should be guided by the general requirements of SNiP 2.04.01-85 (with amendments No. 1 and No. 2), SP 40-102-2000, SP 40-101-96 and VSN 47-96.

2.2. PP-R80-GF pipes designed for maximum continuous operating pressure 2.0 MPa at a temperature of 20 ° C (MOP value 2.0 or PN 20), classified according to DIN 8077 as series 3.2 with a standard ratio of SDR 7.4, recommended for use in plumbing cold water at a maximum operating pressure of 24 MPa (with a service life of 50 years), for hot water supply at a temperature of 75 ° C and a maximum operating pressure of 0.65 MPa (with a service life of 25 years).

Note: During the experimental construction of cold pipelines, it is allowed to use PP-R80-GF pipes with a nominal outer diameter of 32 mm and a nominal wall thickness of 4.4 mm for the transportation of ethylene glycol at temperatures up to minus 18 ° C with a maximum working pressure of up to 0.4 MPa.

2.3. When designing distribution pipelines for cold and hot water supply from PP-R80-GF pipes in apartments, their connection to risers should be carried out through water meters (according to VSN 8-94) and pressure regulators.

2.4. When designing water heating systems for buildings made of PP-R80-AI pipes, one should be guided by the general requirements of SNiP 2.04.05-91 (with amendments No. 1 and No. 2), SP 41-102-98 and VSN 69-97.

2.5. PP-R80-AI pipes rated for a maximum continuous working pressure of 2.0 MPa at 20 ° C (MOP value 2.0 or PN 20), classified according to DIN 8077 as series 2.5 with standard ratio SDR 6, it is recommended to use it for hot water heating systems at temperatures up to 90 ° С, maximum operating pressure 0.7 MPa (with a service life of 25 years).

With horizontal double-pipe inserts for a group of parallel-series connected heating devices;

With horizontal single-pipe inserts for a series of heaters connected in series.

2.7. The hydraulic calculation of the internal water supply from pipes PP-R80-GF and PP-R80-AI should be carried out, respectively, according to the method of SP 40-102-2000, VSN 47-96, SP 41-102-98 and VSN 69-97.

2.8. Determination of specific pressure losses along the length of pipes made of PP-R80-GF and water flow rate, depending on the flow rate, should be made according to the tables of Appendix 2 (cold water supply - table 2.1., Hot water and heating water supply - tables 2.2. And 2.3. calculated by the computer program of A.Ya. Dobromyslov, Ph.D. - A.Yu. Lymareva.

Notes: 1) Determination of head losses along the length of pipes PP-R80-AI and the rate of flow of the coolant in the heating pipelines are approximately recommended to be made according to table. 2.2, appendix 2.

2) Determination of the specific head loss along the length of pipes made of PP-R80-GF and the flow rate of the coolant, depending on the flow rate, is recommended to be made approximately according to table. 2.4., Appendices 2.

2.9. The head loss in local resistances should be determined by the formula:

where x is the coefficient local resistance; V is the average velocity in the section of the pipeline located downstream of the given resistance (m / s).

The coefficient of local resistance should be taken approximately in the table. 4.

Table 4

Local resistance coefficient of PP-R80 fittings for piping systems made of PP-R80-GF pipes and PP-R80-AI pipes

View of parts	Schematic representation of parts *	Meaning
Socket weld
Transition to welding
One diameter
Two diameters
Weld elbow 90 °
Equal weld tee
Welding tee (one diameter)
Weld elbow 90 ° with transition to thread
Butt weld tee with transition to thread
Coupling with transition to thread

2.10. When calculating heating systems pipelines made of PP-R80-AI pipes, the values linear densities heat fluxes of openly laid horizontal and vertical pipes are recommended to be determined approximately according to VSN 69-97.

2.11. When designing an internal hot water supply system from PP-R80-GF pipes and heating systems from PP-R80-A1 pipes, it is necessary to provide compensation for linear temperature deformations of pipelines with L-Z- and U-shaped expansion joints in combination with the arrangement of sliding and fixed supports (Fig. . 1.).

Note: When designing experimental refrigeration supply systems from PP-R80-GF pipes embedded in concrete, compensation of temperature deformations is not provided.

2.12. Calculation of linear temperature deformations? L (mm) of pipelines made of combined polypropylene pipes is recommended to be performed according to the formula:

where a is the coefficient of linear thermal elongation adopted for PP-R80-GF pipes - 0.035, for PP-R80-AI pipes - 0.03 mm / m ° С

l is the length of the pipeline between the fixed supports, m; ? t is the difference in temperature between water in the pipeline during operation and air temperature during installation of the pipeline, ° С.

where K - const, used for PP-R80-AI 15 pipes; for pipes PP-R80-GF 12.

Note: When using prestressing? l it is recommended to reduce it by 2 times.

2.14. The minimum width of the U-shaped expansion joint in k (mm) is recommended to be determined by the formula:

Note: The value in k must be at least 210 mm.

2.15. The distance between sliding supports on a horizontal pipeline made of combined polypropylene pipes should be taken according to table. 5.

Rice. 1. Schemes of compensators on water pipelines from PP-R80-GF and PP-R80-AI pipes

a) L - shaped; b) Z - shaped; c) U - shaped

1 - pipe made of PP-R80-GF, PP-R80-AI; 2 - PP-R80 elbow; 3 - sliding support

Table 5

Distance between sliding supports on a horizontal pipeline made of combined polypropylene pipes (dimensions in mm)

Outer diameter of the pipeline	Cold water piping		Hot water pipeline (at? T = 70? C)

2.16. The distance between sliding supports on vertical sections of water pipes should be taken 10% more than the values ​​in Table 5.

2.17. Shut-off and water-folding fittings should be independently rigidly attached to building structures.

2.18. The passage of pipelines from combined polypropylene pipes through building construction should be done using metal or plastic sleeves.

When risers cross overlap pipelines, a steel pipe sleeve should be provided that protrudes above the overlap to a height of at least 50 mm.

2.19. Cold and hot water pipelines from PP-R80-GF pipes, cold supply pipelines, where it is required by the project, as well as pipelines of heating systems from PP-R80-AI pipes, where it is required by the project, must be thermally insulated. The material, type and thickness of thermal insulation are established by the project (with an orientation to foam rubber or polyethylene foam), taking into account the requirements of SNiP 2.04.14-88 * and SP 41-103-2000.

2.20. When designing experimental systems of cold pipelines embedded in concrete from PP-R80-GF pipes, it is recommended to determine the optimal distance between the cold pipelines by a special heat engineering calculation.

3. TRANSPORTATION AND STORAGE OF PP-R80-GF, PP-R80-AI PIPES AND PP-R80 PARTS

3.1. PP-R80-GF, PP-R80-AI pipes and PP-R80 fittings should be stored indoors or under a canopy to protect from sunlight.

3.2. Pipes PP-R80-GF, PP-R80-AI should be stored in stacks up to 1.5 m high, excluding the possibility of bending along their entire length. In this case, the connecting parts must be stored in containers.

Notes: 1. Storage of pipes is not allowed. PP-R80-GF and PP-R80-AI and PP-R80 fittings at a distance closer than 1 m from heating devices with a surface temperature of 140 ° C or more.

2. It is forbidden to carry out electric and gas welding works in the immediate vicinity of PP-R80-GF, PP-R80-AI pipes and parts made of PP-R80.

3.3. Transportation of PP-R80-GF, PP-R80-AI pipes and parts from PP-R80, as well as loading and unloading operations, should be carried out at a temperature not lower than minus 10 ° C.

In this case, it is forbidden to drop PP-R80-GF, PP-R80-AI pipes and PP-R80 parts from vehicles, because they should be protected from shock and mechanical damage.

Note: It is allowed to transport pipes PP-R80-Gf, PP-R80-AI at temperatures below -10 ° C, provided they are packed in bags or containers.

3.4. Packages with PP-R80-GF, PP-R80-AI pipes and coils of the last pipes with a diameter of 16 mm and parts made of PP-R80 should be kept in a room with a positive temperature for at least 3 hours before unpacking.

4. INSTALLATION OF PIPELINES FROM COMBINED POLYPROPYLENE PIPES

4.1. Installation of water pipelines from PP-R80-GF, PP-R80-AI pipes and parts from PP-R80 should be carried out taking into account the general requirements of SNiP 2.05.01-85, SNiP 2.04.05-91, SNiP 3.02.01-85 (as amended .), SP 40-101-96 and SP 40-102-2000.

4.2. Installation of water supply systems from PP-R80-GF pipes and heating systems from PP-R80-AI pipes should be carried out according to the work design and flow charts developed in accordance with the established procedure by the installation organization.

4.3. Before the installation and welding of PP-R80-GF, PP-R80-AI pipes and PP-R80 fittings, the installer for each batch of pipes and parts should carry out an incoming quality control, including control of the availability of accompanying documentation, including a sanitary-epidemiological conclusion and a certificate compliance (technical certificate), inspection of pipes and parts to establish markings, as well as cracks, chips, marks and other mechanical damage, selective control of the outer diameter and wall thickness of pipes and the inner diameter of the coupling part of the connecting parts.

4.4. Installation of pipelines from pipes PP-R80-GF and PP-R80-AI should be carried out at a positive temperature.

4.5. When installing water pipelines, the permanent connection of PP-R80-GF pipes and heating systems made of PP-R80-AI pipes should be performed mainly using PP-R80 parts by means of butt-socket heat resistance welding.

4.6. Carrying out technology welding works includes preparatory and actual welding work.

Preparatory work includes:

Marking and even cutting of pipes at right angles to the pipe axis;

Chamfering at the end of the pipe at an angle of 30 ° with a depth of 1 mm;

Degreasing with acetone the outer surface of the pipe end with a length equal to the pipe diameter and the inner surface of the coupling part of the connecting part;

Marking (with a pencil) on the end of the pipe at the following distances from the end for diameters (mm):

20 - 14 mm; 25 - 15 mm; 32 - 17 mm; 40 - 18 mm; 50 - 20 mm; 63 - 24 mm; 75 - 26 mm; 90 - 29 mm; 110 - 33 mm;

Degreasing of work surfaces heating elements welding device;

4.7. To cut PP-R80-GF and PP-R80-AI pipes, use special scissors or cutting devices that ensure a straight cut of pipes at a right angle (with a deviation of no more than 0.5 mm); special tool should also be used for chamfering PP-R80-GF and PP-R80-AI pipes.

Note: It is allowed to use hacksaws and templates for cutting pipes, and for chamfering - rasps.

4.8. For resistance heat socket welding of PP-R80-GF and PP-R80-AI pipes, the following technological regime must be observed:

The temperature of the working surfaces of the heating elements during welding should not exceed 260 (+5 °) С;

Reflow time, technological pause, cooling time of the welding joint should be taken according to table. 6.

Table 6

Temporary technological parameters of resistance heat welding of PP-R80-GF and PP-R80-AI pipes with PP-R80 fittings (at an outside air temperature of more than +5 ° С)

Notes: 1) Heating and reflow time is the time counted from the moment of full insertion of pipes and parts into the working elements of the electric heating tool and their reflow.

2) Technological pause - the time after removal of the melted parts from the welding device until the moment of joining of the melted parts.

3) Cooling time - the period after joining the fused parts before the application of assembly forces.

When the outside air temperature is below +5 ° C, the reflow time should be increased by 50%.

4.9. When performing the heating and reflow operation, the misalignment of pipes and working elements of the heating device and bending of more than 3 ° C should not be allowed.

4.10. When mating the melted parts of PP-R80-GF and PP-R80-AI pipes and PP-R80 connecting parts, their rotation about the axis is prohibited.

4.11. To weld PP-R80-GF and PP-R80-AI pipes and PP-R80 fittings under construction conditions, use an electric heating tool with a thermostat that maintains the welding temperature with an accuracy of at least ± 5 ° C at a voltage of 36 V.

Notes: 1) It is allowed to use an electric heating tool with a 220 V power supply, equipped with an automatic protective and disconnecting device (ZOU).

2) When welding pipe workpieces PP-R80-GF and PP-R80-AI in the factory, it is allowed to use an electric heating tool with a voltage of 220 V.

4.12. Resistance heat socket welding of PP-R80-GF and PP-R80-AI pipes with a diameter of up to 40 mm inclusive is allowed to be performed manually.

When welding larger diameter pipes, special centering devices should be used for joining the pipes.

After welding PP-R80-GF and PP-R80-AI pipes, quality control of welded joints should be carried out, including checking:

Straightness at the junction (deviation should not exceed 5?);

Uniformity around the circumference of the weld bead at the ends of PP-R80 parts;

No cracks, folds or other defects in PP-R80 parts caused by overheating.

4.13. Butt-flash welding of PP-R80-GF and PP-R80-AI pipes should be carried out at an outside air temperature of at least 0 ° C.

Note: If it is necessary to perform welding and installation work at an outdoor temperature below 0 ° C, pipes should be welded in heated rooms.

4.14. One-piece joints of PP-R80-GF and PP-R80-AI pipes, especially the execution of installation pipes in uncomfortable cramped conditions, should be carried out mainly by electric pulse welding using PP-R80 couplings with electrostatic spirals.

4.15. In electric pulse welding, the surfaces of the pipe and the coupling to be welded should be degreased with acetone, insert the pipe ends into the coupling until it stops and fix the connection to prevent bending of the pipes and coupling or the exit of the pipe ends from the coupling.

4.16. Electric pulse welding of PP-R80-GF and PP-R80-AI pipes should be carried out at an outside air temperature not lower than minus 5 ° С.

4.17. For electrical impulse welding of PP-R80-GF and PP-R80-AI pipes, a special welding machine should be used that automatically turns off the electrical impulse after the end of welding, guided by a special instruction attached to the welding machine.

4.18. Welding of PP-R80-GF and PP-R80-AI pipes and parts made of PP-R80 must be allowed by working personnel who have a certificate for the right to weld and install thermoplastic pipes.

4.19. Pluggable threaded connections of combination parts made of PP-R80 with steel pipes or fittings should be performed primarily by hand or using adjustable torque tongs.

4.21. When fixing the risers of water supply and heating from pipes PP-R80-GF and PP-R80-AI, clamp metal supports with rubber gaskets on clamps should be used.

It is recommended to use sliding supports made of polypropylene when fixing the wiring of the water supply system of the sanitary-technical units.

4.22. The device of fixed supports should be performed on pipes PP-R80-GF and PP-R80-AI in accordance with SP 40-101-96 by welding 2 PP-R80 couplings and a clamp metal sliding support rigidly attached to building structures.

4.23. For concealed laying of water pipelines from PP-R80-GF pipes by embedding with concrete or cement-sand mortar pipes must be thermally insulated with flexible foam.

4.24. When concreting installed refrigeration pipe systems from PP-R80-GF and PP-R80-AI pipes during the hardening of concrete, it is recommended to pass ethylene glycol through the cold pipe, cooled to a temperature of 0 ° C.

4.25. Plumbing from PP-R80-GF pipes and heating systems from PP-R80-AI pipes after installation must be tested in accordance with SNiP 3.02.01-85, SP 40-101-96, SP 40-102-2000 and VSN 69- 97.

Hydraulic tests of water pipelines from pipes should be carried out no earlier than 16 hours after welding the last connection.

4.26. The value of the hydraulic test test pressure should be taken equal to 1.5 of the maximum possible excess working pressure in the pipeline.

The test pressure shall be maintained for 30 minutes, after which the pressure loss is observed for 10 minutes.

Plumbing from PP-R80-GF pipes is considered to have passed the test if after 10 minutes. at the test pressure, the value of the pressure drop did not exceed 0.05 MPa and no drops would be detected in the welded seams of the pipes, threaded connections, fittings and water leaks through flushing devices.

4.27. At the end hydraulic tests the water supply system from PP-R80-GF pipes should be flushed with running water within 3 hours.

4.28. Testing of heating systems from PP-R80-AI pipes:

After the installation work, the system should be tested for leaks at a pressure 1.5 times the operating pressure, but not less than 0.7 MPa.

At preparatory work before pressure testing the system, it is necessary to: turn off (temporarily remove) safety safety valves, control valves, sensors, etc., if the permissible pressure of the specified fittings is less than the test pressure; replace the disconnected elements with plugs or shut-off shut-off valves, the allowable pressure for which is greater than the test pressure; connect a pressure gauge to the system with an accuracy of 0.01 MPa.

Hydraulic tests must be carried out at constant temperature in two stages:

Stage 1 - every 10 minutes for 30 minutes to raise the pressure twice to the calculated value. In the next 30 minutes, the pressure drop in the system should not exceed 0.06 MPa.

Stage 2 - in the next 2 hours, the pressure drop (from the pressure reached at the 1st stage) should not be more than 0.02 MPa.

5. SAFETY REQUIREMENTS

5.1. When carrying out work on the installation of water cooling and heating systems from PP-R80-GF and PP-R80-AI pipes, it is necessary to comply with the general requirements of SNiP III-4-80 "Safety in construction".

5.2. To work on the installation and welding of pipelines from pipes PP-R80-GF and PP-R80-AI, persons who have reached the age of 18, who have undergone a medical examination, special training, induction and on-the-job instruction on safety are allowed.

5.3. PP-R80-GF and PP-R80-AI pipes at room temperature do not allocate in environment toxic substances and do not have a harmful effect on the human body through direct contact. Working with them does not require any special precautions.

5.4. When welding PP-R80-GF and PP-R80-AI pipes and PP-R80 fittings, volatile products of thermal oxidative destruction containing formaldehyde are emitted into the air (MPC - 0.5 mg / m 3, hazard class 2); acetaldehyde vapors (MPC - 5.0 mg / m 3, class 3); vapors of acetic acid (MPC - 5.0 mg / m 3, class 3); carbon monoxide (MPC - 20.0 mg / m 3, class 4); aerosol of polypropylene and polypropylene copolymer (MPC - 10.0 mg / m 3, class 3). PP-R80-GF and PP-R80-AI pipes should be welded in a ventilated area.

5.5. Pipes PP-R80-GF and PP-R80-AI, in contact with an open fire, burn with a smoky flame with the formation of a melt and the release of carbon dioxide, water vapor, unsaturated hydrocarbons and gaseous products specified in clause 5.4. of these TR.

Flash point of combined polypropylene pipes? 325 ° C.

For extinguishing PP-R80-GF pipes and PP-R80-AI pipes, water, sand or any type of fire extinguisher must be used. To protect against toxic products formed during the combustion of PP-R80-GF pipes and PP-R80 fittings, insulating gas masks of any kind or filtering masks of the BKF brand should be used.

5.6. When working with a heating welding tool with a voltage of 220 V, the general rules of electrical safety (GOST 12.2.007-75) should be observed and dielectric rugs and gloves should be used.

Annex 1

List of PP-R80 fittings (for resistance socket welding), combined parts (for welding and thread) and brass parts (for thread) for PP-R80-GF and PP-R80-AI pipes

Name of parts	Schematic representation	Nominal diameter, mm
PP-R80 fittings for socket weld
Elbow 90 °
Equal tee
Reduced tee
Equal crosspiece
Plug
Combined (PP-R80 and metal) connecting parts (under socket welding and thread)
Mounting bracket for water fittings
Coupling with transition to internal thread
Coupling with transition to external thread
Coupling with a transition to an internal thread for a wrench
Coupling with a transition to an external thread for a wrench
Elbow with transition to female thread
Elbow with transition to external thread
Female tee
Male tee
Special parts made of PP-R80
Branch pipe with flange for union nut brass
Socket with embedded electric spiral (for welding)
Brass special parts
Union nut
Threaded nipple
Threaded adapter with internal and external threads
Metal support clamps
Combined shut-off valves

Appendix 2

Tables for hydraulic calculations of piping systems

Table 2.1. for hydraulic calculations of cold water pipelines (temperature 10 ° C) from PP-R80-GF pipes (speed V - m / s)

Outside diameter, mm

Flow rate Q, l / s

Table 2.2. for hydraulic calculations of hot water pipelines (temperature 75 ° C) from PP-R80-GF pipes and heating pipelines from PP-R80-AI pipes (speed V - m / s)

Outside diameter, mm

Flow rate Q, l / s

Table 2.3. for hydraulic calculations of hot water supply (temperature 60 ° C) from PP-R80-GF pipes (speed V - m / s)

Table 2.4. For hydraulic calculations of cold pipelines (temperature minus 15 ° C) from PP-R80-GF pipes with an outer diameter of 32 mm (speed V - m / s)

Appendix 3

List of basic special tools for installing water pipes from PP-R80-GF * and PP-R80-AI * pipes

1. Device "Fusioterm" for resistance heat socket welding (manually) of PP-R80-GF and PP-R80-AI pipes with PP-R80 fittings with a set of working elements for pipes and parts diameters 20, 25, 32, 40, 50, 63, 75 mm.

2. The same - for pipe diameters of 50, 63, 75, 90 and 110 mm.

3. Welding machine "Fusioterm" for welding pipes and parts with a diameter of 50, 63, 75, 90 and 110 mm.

4. Shears for cutting pipes with a diameter of 16-40 mm.

5. Pipe cutter for cutting pipes with a diameter of 50 to 90 mm (imported).

6. Cleaning tool for pipes with a diameter of 20-110 mm.

7. Apparatus for electric pulse welding of pipes and couplings with embedded electric spirals.

8. Keys with adjustable torque (domestic production).

* Supplier firm "Aquatherm" (Moscow, 1st Krasnogvardeisky, 12, p. 3).

Polypropylene is by far the most demanded material for the arrangement of pipelines for hot / cold water. One of essential conditions ensuring reliable operation of the system - correct fastening polypropylene pipes. It can be performed in several ways, which are divided into two main groups: outdoor installation and internal.

Regardless of the chosen installation option, you will need special fasteners and "consumables" for its implementation. This review provides relevant information that will be useful when choosing fasteners and consumables necessary for arranging polypropylene lines.

What are the norms for fastening polypropylene pipes

Laying of polypropylene pipelines should be carried out in accordance with the standards specified in GOST 52134-2003. This standard contains all the necessary requirements for the fastening of polypropylene pressure pipes. Compliance with this standard guarantees reliable operation of the systems and the absence of leaks at normal operating parameters (temperature / pressure) in the system.

The pipes must be fastened in such a way as to compensate for their thermal expansion. To solve this problem, fixed elements of sliding fasteners are used, which are capable of reacting to temperature changes (single / double clips).

Vault building regulations 40-101-96 indicates the inadmissibility of rigid fastening of polypropylene pipes. Therefore, it is necessary to use fixed sliding fasteners that compensate for linear expansion.

How is the fastening of polypropylene pipes

For the installation of highways using polypropylene pipes you will need:

plastic clips (or clamps) the right size;

• dowels.

2. Tools:

• curly screwdriver;

  knife \ scissors for cutting polypropylene pipes;

  yardstick;

• pencil or marker.

Fastening of polypropylene pipes must be carried out taking into account the risk of mechanical deformation and thermal expansion of the line. Experts recommend laying pipes in grooves, suspended ceiling structures, in walls, in screeds, along walls under skirting boards or in an open way.

The installation of propylene pipes must be carried out at an ambient temperature of at least + 5 ° C.

Pipes with an outer diameter ranging from 16 to 32 mm should be bent with a radius that is at least 8 outer diameters. Such operations are performed at an air temperature of more than 15 ° C.

Propylene pipes must be protected from exposure to open flames.

If, during the wiring process, it becomes necessary to cross the pipelines, then it is necessary to use special fastening parts for crossing.

When connecting pipes with threads, special fittings of the required size are used. Cutting threads on polypropylene pipes is prohibited.

If there are sections from polypropylene in the pipeline metal pipes, then the connection must be made without the use of soldering or welding, as this can lead to overheating of the polypropylene fasteners.

Pipelines are laid with a slope of at least 0.5%. At the lowest point in the pipeline, it is necessary to provide for the installation of a drain valve or drain valve. Long pipelines should be divided into individual elements, which can be shut off using ball valves or straight-through valves. This is necessary to simplify maintenance and repair work. polypropylene pipeline... At the points where it is planned to install mixers and other plumbing equipment, a universal wall mount is installed with an axis adjustment from 10 to 15 cm.

Distance between fixings

Maximum spacing for fixing polypropylene pipes PN 10 for horizontal lines:

Distance between fasteners of polypropylene pipes PN 16 when laying horizontally, it should not exceed the values ​​indicated in the table:

Distance of fastening of polypropylene pipes PN 20(maximum spacing between supports) for horizontal installation must not exceed the following values:

For vertical mounting, the values ​​in the table must be multiplied by 1.3.

For polypropylene pipes STABI PN 20 with reinforcement:

Methods for attaching polypropylene pipes:

	At the points where you need to branch off the trunk
At the reinforcement attachment points	Using clamps
	Fastening next to the fitting

When fastening polypropylene pipes, one should take into account the operating conditions (temperature / pressure), the permissible linear expansion, as well as the connection options. There are two main options for fastening:

stationary (there is no possibility of moving the fastener along the axis of the polypropylene pipe);

movable (compression / expansion of the line is provided without changing the position of the axis).

When is it better to use clips for fastening polypropylene pipes

For the installation of polypropylene pipelines, nylon clips are used. These parts have the necessary resistance to high temperatures and durability. The size of the clip should be selected based on the pipe diameter (outer). Fastening of polypropylene pipes is carried out in accordance with the installation requirements. Advantages of piping installation using clips:

Fast and reliable piping. The clips are fastened to a wall or other surface with self-tapping screws.

This mounting option can be used for laying lines made of polypropylene pipes. for different purposes that operate over a wide temperature range.

• Subject to the installation requirements (installation intervals of clips), the absence of distortions of the line during operation is guaranteed.

Fastening of polypropylene pipes with clips provides aesthetic appearance pipeline without additional covering structures.

Mounting can be done without special devices and tools.

Clips for pipes made of polypropylene are used for fastening water supply and heating lines. With their help, you can fasten the line to surfaces made of wood, drywall, concrete or brick. Single and double clips are presented in the catalogs of manufacturers. With parallel fastening of pipelines, depending on the distance between the lines, two single or one double clips are used. Single fasteners are easily attached to each other without special tools. So you can install several parallel branches of polypropylene pipes.

Sets of clips can be completed with straps that prevent the pipe from falling out of the mount.

When installing a line made of polypropylene pipes, it is necessary to observe the fastening interval. When setting the clips on excessively great distance sagging of the pipeline can occur between the supports. Optimal fastening spacing for pipes different sizes presented in the table:

Table 1

Before performing work on fastening polypropylene pipes, they must be connected together. For this, butt, polyfusion welding or electrofitting is used. In order to quickly and efficiently carry out the installation of the pipeline, experts recommend to be guided by the following algorithm of actions:

Before starting the installation work, it is necessary to mark the future highway around the perimeter. It is necessary to provide a slight slope of the pipeline.

At the points of attachment of the line, you need to drill holes for the dowels.

Install clips into the holes.

Install the dowels with a hammer and screwdriver.

Install clips.

When is it advisable to use clamps for attaching polypropylene pipes

For fastening polypropylene pipes, the price depends on the fasteners used and the weight of the pipe. For heavy pipes with a large diameter, it is necessary to use the fastening clamps. These elements have a vibration-damping rubber gasket and screw ties for a secure fit. The clamps securely hold even very heavy pipes in the event of strong vibrations. The set includes a hairpin and dowel. There are plastic or metal clamps on the market. Experts recommend using plastic fasteners, which will provide the same strength characteristics of the structure. The pipeline is fastened in the form of a rigid or floating structure:

For a rigid installation, the clamps must be tightened as much as possible on the pipes. This attachment is used at the points below the bell. This installation eliminates any displacement of the line.

• Floating fastening involves loose tightening of the clamp. In this case, a gap remains between the fasteners and the polypropylene pipe. This provides the necessary mobility of the line during linear temperature expansion.

In specialized stores, clamps for polypropylene pipes with or without rubber gaskets are presented. Availability rubber seal provides sound insulation during operation of the line and protects it from vibrations.

When performing floating fastening of polypropylene pipes to the wall, the distance between the clamps must be selected based on the diameter of the pipe. Standard values ​​for pipelines for various purposes are shown in Table 2.

table 2

How is the fastening of polypropylene heating and water supply pipes in a hidden way?

To solve design problems, there is often a need for hidden laying of communications. When using polypropylene pipes, customers have doubts about how reliable the pipeline will be and what technology should be used for installation work.

Polypropylene products are resistant to corrosion and chemical active substances... Knowing these characteristics, we can say that pipes made of this material are quite suitable for concealed installation in the wall or in concrete screed... Considering the thermal expansion, when laying in a hidden way hot water pipelines around the polypropylene pipe must be left air gap... To ensure the operational reliability of the pipeline, it is necessary to minimize the number of pipeline connections. In addition, it is necessary to provide for thermal insulation of the line. For this, special insulation, cardboard, mineral wool, etc. can be used. This will prevent the formation of condensation on the surface of polypropylene pipes. For maintenance of the system, it is necessary to provide for easy access to the closing fittings. To do this, in the places of its installation, hatches are mounted, which are presented in a wide range in plumbing stores.

The first stage of work on laying pipelines involves marking the line, which can be applied with a marker or pencil. Further operations are performed in the following sequence:

According to the markings made with a grinder or a perforator, parallel grooves are channeled. When working with a grinder, it is recommended to use discs for processing stone or diamond-coated discs.

The gap between the grooves is removed with a perforator or chisel so that a wide depression is obtained.

A pipeline is laid in the prepared recess, which is sealed from above with a cement-based solution.

The installation site is finished with decorative material.

After the completion of pipe-laying, an hour later, the line is tested. To do this, it is filled with water and examined for leaks. When flush-mounted in the wall, pipes are fastened using plastic fasteners. For large-diameter pipelines, metal fasteners can be used.

Polypropylene pipes and consumable for their fastening, it is better to purchase only from trusted suppliers. We offer you the help of specialists of the company "SantechStandard", which is a supplier engineering plumbing in Russia since 2004.

Cooperating with "SantechStandard", you get the following benefits:

quality products at reasonable prices;

constant availability of products in the warehouse in any quantities;

conveniently located warehouse complexes in St. Petersburg, Moscow, Novosibirsk and Samara;

free shipping in St. Petersburg, Moscow, Novosibirsk, Samara, including transport companies;

delivery of goods to the regions through any transport companies;

individual approach and flexible work with each client;

discounts and various promotions for regular customers;

certified and insured products;

registered in Russia trade marks, which is additional protection against low-quality counterfeits.

The specialists of our company "SantechStandard" are ready to help you choose plumbing equipment both individuals and companies. You just need to contact by phone: