Note!

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The installation of polypropylene pipes in Russia is regulated by the provisions of GOST R 52134-2003 "Pressure pipes made of thermoplastics and fittings for them for water supply and heating systems", SNiP 41-01-2003 "Heating, ventilation and air conditioning", SNIP 3.05.01-85 " Internal sanitary 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 pipelines made of polypropylene "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(PP-N polypropylene homopolymer, PP-B polypropylene block copolymer, PPRC polypropylene random copolymer) and its modifications (Polypropylen-Homopolymer PP-H-s fire resistant, Polypropylen-Randomcopolymer PP-R-el electrically conductive, Polypropylen-Randomcopolymer PP-R-s-el electrically conductive and fire resistant ) (see more), as well as reinforcement with aluminum foil or fiberglass, is to ensure operational 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 residual 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 the use of special compensators.

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 and heating systems.

To solve this problem, the pipeline route is conditionally divided by fixed supports into sections that autonomously respond to changes in temperature (or pressure) in the pipeline. Fixed supports (BUT) direct the extension along the axis to sliding supports (SO) installed in places where the direction of the route changes, which, in fact, are compensating devices.

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

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

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

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

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

Rice. Nomogram of linear thermal expansion of PN 20 pipes made of polypropylene random copolymer, 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 diameter DN of the nominal diameter of the polypropylene pipe.

Rice. Single and double clips for sliding bearings of polypropylene pipelines

SP 40-101-96 categorically prohibits rigid fixation of the pipeline during the installation of polypropylene pipes by compressing the pipeline. Therefore, fixed supports can be made on the basis of sliding supports with axial movement limited 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 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 disadvantages - 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 imposes stringent requirements on:

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 include.

The pipeline is fixed to various surfaces(floor, wall, ceiling) by special fasteners. They are clamps that wrap around the pipe in diameter. hallmark This device is considered to be securely attached to the wall. In addition to it, bolts with nuts are needed.

Mounting types

Fasteners have several varieties:

• crimp;
• safety;
• guides;
• support.

They are needed to fully attach the fixture to the pipeline in different places.

The clamp is made of steel or plastic. There are fasteners that rubber compressor. The device can be dismantled if it is provided for by its design. Such a clamp is called detachable.

Important Points

1. The deviation of pipes in a vertical position should not exceed 2 mm (per 1 m of length).
2. The clamp must not be placed in the area where the pipelines are connected to each other.
3. When sealing fasteners, it is strictly forbidden to use corks made of wood and welding.
4. Pipe risers in industrial buildings fastened every 3 m (according to SNiP). SNiP is a set of regulations on construction.
5. Riser pipes in residential buildings are fixed if the height of one floor is over 3 m. This applies to steel pipelines.
6. Plastic sewer pipes should be strengthened, while not forgetting the slope.

Before finally installing the clamps, it is necessary to calculate the connections with branch pipes, with the exception of soft types fixation. For socket joints, rubber rings are used. Compensation pipes are used only once.

The gap between the fasteners of polypropylene pipes is calculated during design. This step, coupled with a rigid fixation, provides a longer operation. In this situation, mounts, in the design of which there is a rubber gasket, will come in handy.

The distance between the fastenings of polypropylene pipes according to SNIP directly depends on:

• temperature regime distilled substance;
• content in the pipe wall of aluminum or fiberglass;
• coefficient of linear expansion in a polypropylene pipeline;
• thickness, diameter and material of the pipe;
• additional loads.

Ignoring these factors will adversely affect the life and throughput pipeline. When too long distance between the fasteners, pinching of the supports and bending of the polypropylene pipes will occur, which will lead to the destruction of the entire system.

It is quite difficult to independently calculate the distance between clamps for PVC pipes. To facilitate this task, manufacturers of building materials attach to their products (polypropylene pipes) instructions for use, which contain an explanatory table (calculation depending on the diameter of the pipe and the temperature regime of the fluid being driven). An example in the photo.

If the firm is reliable, then the technical catalog is publicly available. In the absence of information about the distance between the fasteners, professionals advise making small gaps between the clamps.

This method has two disadvantages:

1. Installation of polypropylene pipes will take longer than previously envisaged.
2. You will have to purchase some additional clamps.

The design of a pipeline for sewerage is carried out taking into account the relevant regulatory documents (SNiP). Fixings will be required, without them sewer system will not function normally, as its alignment will be lost. In this case, not only a clamp is used, but also a plastic clip.

In the first case, the material from which the pipe is made does not matter (iron or PVC). In the second, in addition to the clip itself, you will need a dowel. If the sewer pipeline contains PVC, then its diameter will not be large. The reason for this is that plastic is not designed to carry too much load. The size of the clip varies between 16-50 mm. It is not used for fixing the pipe to the floor.

Steel or iron sewer pipes do not change under the influence high temperature, which cannot be said about those made of PVC. A similar process is compensated by a clamp. In this case, both rigid and floating methods are used.

Distance between sewer fixings pvc pipes determined by the sewer system plan. Fasteners are carried out using the minimum gap. The frequency is 40 cm with a diameter of 50 mm. Further indicators increase proportionally, for example, if the diameter is 100 mm, then the distance from one mount to another is 80 cm.

In the same way, the installation of the pipeline on the ceiling is carried out, usually it is carried out in the basement. Fasteners in the form of clamps are not allowed to be used on bends; there should be a distance of 1.5 dm. It is imperative to fix the connection between the fitting and the pipe.

Steel pipeline fastening

The distance between the fastenings of steel pipes according to SNiP depends on the diameter. If conditional pass reaches no more than 20 mm, then the gap between the clamps should not exceed 2.5 m. With a diameter of up to 32 mm - 3 m.

For a hole with a radius of 40 mm, you need a distance of 4 m. When laying a steel pipeline openly, the master will need clamps and brackets. The use of welding (gas or electric) is strictly prohibited. Not considered operational steel pipelines laid in a trenchless way.

The quality of the work performed is influenced by the selected materials and the exact adherence to the developed pipeline plan. If necessary, you can consult with professionals. Their recommendations will help you choose fasteners suitable for pipes and produce them. competent installation. The experience of specialists should not be neglected.

The appearance of polypropylene pipes on the Russian market turned out to be very timely, when in most houses built during the Soviet era, metal water and heating pipes began to become unusable, since they had completely served their time.

The period of some distrust of new plastic pipes did not last long. Consumers appreciated the quality, aesthetics and operational advantages of polypropylene pipes.

Today, we can already state with confidence that the test of polypropylene pipes over time has been exceptionally successful, and they have become a more advantageous alternative to pipes made of other materials. What are the requirements for regulatory documents for these products, and how to do it right?

Overview of state standards for polypropylene pipes

Most products worldwide apply various systems controls governing their production and use.

Main normative documents in Russia are SP, SNiP, GOST: polypropylene pipes fall under the requirements of SP 40-101-96, SNiP 2.04.01-85, GOST R 52134-2003 and others.

Basic GOST requirements for polypropylene pipes

GOST R 52134-2003 "Pressure pipes made of thermoplastics ... General specifications» regulates:

• Scope: pipes from thermoplastics of round section and are used for transportation of drinking and technical water, are intended for arrangement of cold water and hot water systems, heating of residential and non-residential buildings.
• The main parameters and dimensions are given in the document in tabular form, this paragraph contains data on which, according to GOST 52134 2003, a polypropylene pipe should have outer and inner diameters, wall thickness, tolerances etc.
• Technical requirements: a large paragraph contains characteristics, requirements for reliability, raw materials, materials, components, recommendations for completeness, packaging.
• Requirements for safety and environmental protection: this section specifies the hazard classes in the production of pipes, contains reference requirements.
• Acceptance Rules: This refers to test methods, lot sizes, how pipes and fittings are to be sampled for testing, etc.
• Methods of control: the section regulates the procedure for testing products.

Large and important sections are also: transportation, storage conditions, pipe installation. In addition, various calculation tables are attached to GOST.

What is regulated by the joint venture, SNiPs

Rulebooks, building codes and the rules establish regulations for the design, installation and operation of systems, including those made of polypropylene pipes. Polypropylene pipes assembled in accordance with the requirements of SP and SNiP will work most efficiently and for a long time.

How to choose polypropylene pipes?

There are no prohibitions on being independent in your home, therefore, in principle, a person who knows the installation skills and has an idea about the design of plumbing systems can purchase pipes and accessories for them himself and carry out the laying.

Piping installers themselves purchase necessary accessories and provide a comprehensive guarantee for the work performed (materials + installation).

In order not to make a mistake and purchase pipes with the desired characteristics, you must:

1. carefully study the certificate for polypropylene pipes in the store, it must contain information about the class of operation of the product according to the State Standard, there are 6 classes of PP pipes:

1. evaluate the quality of pipes and fittings: the outer and inner surfaces of the pipes must be smooth, the cross section must have a perfectly round shape; the presence of shells, cracks, burrs and bubbles in the material is not allowed; color models must have a uniform color;
2. inquire about the guarantee for products, any pipe and accessories for it must be endowed with a supplier's guarantee.

It is important to take into account that allowable temperature storage of polypropylene pipes is not lower than - 20 0 C. Therefore, you should not buy products in the winter on the street or in unheated stores.

Polypropylene pipes are easy to install, reliable, aesthetic. They have a long service life of 50 years. But it must be remembered that the long-term trouble-free use of pipeline systems installed in compliance with the standards is possible only under normal conditions.

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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"

During the development of the TR, information and technical materials of the company "Aquatherm" (Aquatherm - Germany) were used for polypropylene PP-R80 filled with glass fiber "GF" (trade name "Fusiolen") and made of combined pipes (trade name "Faser" (Faser) , as well as combined pipes with a layer of aluminum foil PP-R80-A1 (trade name "fusioterm-stabi" (fusioterm-stabi)).

When developing the TR, the results of studies on the long-term strength of the Faser combined pipes, the results of pipe tests carried out at the Research Institute of Sanitary Engineering and CJSC "Zavod AND Gaztrubplast" were taken into account. Faser pipes have a hygienic conclusion 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 of buildings and cold supply systems in the construction of artificial skating rinks and ice tracks; PP-R80-A1 - water heating systems for buildings (with heating devices and floor).

The following participated in the development of the TR: Ph.D. A.V. Sladkov, Ph.D. Vlasov G.S.

1. GENERAL

1.1. Real technical advice apply to the pilot construction of internal systems of cold and hot water supply (temperature not more than 75 ° C) and heating (temperature not more than 90 ° C) of residential and civil buildings in Moscow from pressure combined polypropylene pipes: "Phaser" (hereinafter pipes "PP -R80-GF") and "fusioterm-headquarters" (hereinafter pipes "PP-R80-AI") and are the development of industry standards VSN 47-96 and VSN 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, strobes, shafts, shaft packages and channels (except for connections to sanitary technical devices).

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

1.4. It is allowed to use pipes PP-R80-GF for experimental installation of cold pipeline systems, artificial skating rinks, ice tracks built in enclosed 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 hidden gaskets in baseboards, behind screens, in strobes, shafts, channels.

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

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

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

1.9. Complete with pipes PP-R80-GF and PP-R80-AI and must be supplied with fittings made of PP-R80 under contact welding socket, combined fittings with embedded threaded inserts made of galvanized brass and threaded parts made of brass.

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

table 2

Range and weight of pipes PP-R80-AI

Outer 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 metrics	unit of measurement	Normalized value of the indicator	Notes, reference indicators
	Tensile yield strength, not less than			The coefficient of thermal conductivity at 20? C for pipes PP-R80-GF -0.15 W / m ° C; for pipes PP-R80-AI - 0.24 W/m °С
	Elongation at break, not less than			Coefficient of linear temperature elongation: for pipes РР-R80-GF - 0.35 10 -4 1/°C; for pipes PP-R80-AI - 0.3?10 -4 1/°C
	Impact resistance at two-bearing bending at a temperature of 0 °С (percentage of destroyed specimens), not more than
	Resistance of PP-R80-GF pipes at constant internal pressure (complete with connecting parts in welding, control test time (without destruction) not less than at:			Coefficient of equivalent evenly-grained roughness - 0.0106 mm Modulus of elasticity at 20 °C for PP-R80-GF pipes - 1200* N/mm2
	Temperature 20 °C, test pressure 5 N/mm2
	Temperature 95 °C, test pressure:
	Resistance of RR-R80-AI pipes at constant internal pressure (complete with welding fittings), control test time (without destruction), not less than:			Modulus of elasticity of pipes PP-R80-AI - 800* N/mm 2
	At a temperature of 20 °C and an initial stress in the inner layer of the pipe wall PP-R80-AI 16 N/mm 2 ;
	The same at a temperature of 95 ° C and voltage: 4.5 N / mm 2
	Melt Flow Rate PP-R80

*Note: The norms must be clarified according to the test results.

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

2. DESIGN OF PIPELINE SYSTEMS FROM COMBINED POLYPROPYLENE PIPES

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

2.2. PP-R80-GF pipes rated for maximum continuous operating pressure 2.0 MPa at 20 °C (MOP value 2.0 or PN 20), classified no DIN 8077 as series 3.2 with a standard SDR ratio of 7.4, recommended for water supply cold water at a maximum working pressure of 24 MPa (with a service life of 50 years), for hot water pipes at a temperature of 75 ° C and a maximum working pressure of 0.65 MPa (with a service life of 25 years).

Note: During the pilot 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 transporting 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 made through water meters (according to VSN 8-94) and pressure regulators.

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

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

With horizontal two-pipe inserts for a group of radiators connected in parallel and in series;

With horizontal one-pipe inserts for a group of radiators connected in series.

2.7. Hydraulic calculation of the internal water supply from pipes RR-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. The determination of the specific pressure loss along the length of pipes made of PP-R80-GF and the water flow rate depending on the flow rate should be made according to the tables in Appendix 2 (cold water supply - Table 2.1., Hot water and heating water supply - Tables 2.2. and 2.3. , calculated according to the computer program Ph.D. Dobromyslova A.Ya. - Lymareva A.Yu.

Notes: 1) Determination of pressure losses along the length of pipes PP-R80-AI and the flow rate of the coolant in the heating pipelines are approximately recommended to be carried out according to Table. 2.2, applications 2.

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

2.9. 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 Table. 4.

Table 4

Coefficient of local resistance of PP-R80 fittings for piping systems made of PP-R80-GF pipes and PP-R80-AI pipes

Detail view	Schematic representation of parts*	Meaning
Coupling for welding
Transition for welding
For one diameter
for two diameters
Elbow 90° for welding
Equal tee for welding
Tee multi-pass for welding (for one diameter)
Elbow 90° for welding with transition to thread
Tee for welding with a transition to a thread
Coupling with thread transition

2.10. In the heat engineering calculation of pipelines of heating systems from pipes PP-R80-AI, 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 pipeline from PP-R80-GF pipes and heating systems from PP-R80-A1 pipes, compensation of linear temperature deformations of pipelines with L-Z- and U-shaped compensators should be provided in combination with the arrangement of sliding and fixed supports (Fig. . one.).

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

2.12. The calculation of linear temperature deformations? l (mm) of pipelines from combined polypropylene pipes is recommended to be carried out according to the formula:

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

l - pipeline length between fixed supports, m; ?t - difference between water temperatures in the pipeline during operation and air temperature during pipeline installation, °C.

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

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

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

Note: The value of 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 from Table five.

Rice. 1. Schemes of expansion joints on water pipes from pipes PP-R80-GF and PP-R80-AI

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

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

Table 5

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

Pipe outer diameter	Cold water pipeline		Hot water pipeline (at?t = 70?C)

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

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

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

When crossing pipelines of ceilings with risers, a sleeve made of a steel pipe protruding above the ceiling to a height of at least 50 mm should be provided.

2.19. Cold and hot water pipelines from PP-R80-GF pipes, cold supply pipelines, where required by the project, as well as pipelines of heating systems from PP-R80-AI pipes, where required by the project, must be thermally insulated. The material, type and thickness of thermal insulation are established by the project (with a focus on rubber foam 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 pipes embedded in concrete from PP-R80-GF pipes, it is recommended to determine the optimal distance between cold pipes by a special heat engineering calculation.

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

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

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

Notes: 1. Do not store pipes PP-R80-GF and PP-R80-AI and fittings made of PP-R80 closer than 1 m from heating appliances with a surface temperature of 140 °C or more.

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

3.3. Transportation of pipes PP-R80-GF, PP-R80-AI 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.

At the same time, it is forbidden to drop pipes PP-R80-GF, PP-R80-AI and parts from PP-R80 from vehicles, because they must 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 pipes PP-R80-GF, PP-R80-AI 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 PIPING FROM COMBINED POLYPROPYLENE PIPES

4.1. Installation of water pipelines from pipes PP-R80-GF, PP-R80-AI 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 pipes from PP-R80-GF pipes and heating systems from PP-R80-AI pipes should be carried out according to the project for the production of works and technological maps developed in the prescribed manner by the installation organization.

4.3. Before installation and welding of PP-R80-GF, PP-R80-AI pipes and fittings made of PP-R80, the installation company for each batch of pipes and parts should perform an incoming quality control, which includes control of the availability of accompanying documentation, including a sanitary and epidemiological conclusion and a certificate compliance (technical certificate), inspection of pipes and parts to establish markings, as well as cracks, chips, scratches 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 pipes, the permanent connection of PP-R80-GF pipes and heating systems from PP-R80-AI pipes should be carried out mainly using parts from PP-R80 by socket contact heat welding.

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

Preparatory work includes:

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

Removal of a chamfer 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 end of the pipe with a length equal to the diameter of the pipe 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 work surfaces heating elements welding device;

4.7. For cutting pipes PP-R80-GF and PP-R80-AI, use special scissors or cutting devices that provide an even 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 the ends of 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. During contact heat welding of socket pipes PP-R80-GF and PP-R80-AI, the following technological regime must be observed:

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

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 pipes PP-R80-GF and PP-R80-AI with fittings made of PP-R80 (at an outdoor air temperature of more than +5 °C)

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

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

3) Cooling time - the period after joining the melted parts to the application of mounting forces.

At outdoor temperatures below +5 °C, the reflow time should be increased by 50%.

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

4.10. When pairing melted parts of pipes PP-R80-GF and PP-R80-AI and connecting parts from PP-R80, their rotation relative to the axis is prohibited.

4.11. For welding PP-R80-GF and PP-R80-AI pipes and fittings made of PP-R80 in 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 shutdown device (ZOU).

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

4.12. Socket contact heat welding of PP-R80-GF and PP-R80-AI pipes with a diameter of up to 40 mm inclusive can be done manually.

When welding pipes of larger diameter, special centering devices should be used to join the pipes.

After welding of 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 parts made of PP-R80;

Absence of cracks, wrinkles and other defects in PP-R80 parts caused by overheating.

4.13. Socket welding of PP-R80-GF and PP-R80-AI pipes should be performed at an ambient air temperature of at least 0 °C.

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

4.14. Permanent connections of pipes PP-R80-GF and PP-R80-AI, especially the execution of installation pipes in inconvenient cramped conditions, should be carried out mainly by electric pulse welding using PP-R80 couplings with electric embedding spirals.

4.15. In electric pulse welding, the welded surfaces of the pipe and the coupling 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 the coupling or the exit of the pipe ends from the coupling.

4.16. Electropulse welding of PP-R80-GF and PP-R80-AI pipes should be carried out at an outside air temperature of at least minus 5 °C.

4.17. For electric pulse welding of PP-R80-GF and PP-R80-AI pipes, a special welding machine should be used that automatically turns off the electric pulse after welding is completed, following the special instructions 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 for workers who have a certificate for the right to produce welding installation work with thermoplastic pipes.

4.19. Plug-in connections on the thread of combined parts made of PP-R80 with steel pipes or fittings should preferably be done by hand or with torque-controlled pipe wrenches.

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

When fixing the plumbing of sanitary facilities, it is recommended to use sliding supports made of polypropylene.

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

4.23. When laying hidden water pipes from PP-R80-GF pipes by embedding with concrete or cement-sand mortar pipes must be insulated with flexible foam.

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

4.25. Water pipelines 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 pipes from pipes should be carried out no earlier than 16 hours after welding of the last joint.

4.26. The value of the hydraulic trial 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 min, after which the pressure loss is observed for 10 min.

Water supply from PP-R80-GF pipes is considered to have passed the test if after 10 minutes. at the test pressure, the pressure drop did not exceed 0.05 MPa and no drops were found in the pipe welds, threaded connections, fittings and water leakage through flushing devices.

4.27. At the end hydraulic tests flushing of the water supply from PP-R80-GF pipes with running water should be carried out within 3 hours.

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

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

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

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

Stage 1 - every 10 minutes for 30 minutes, 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 performing work on the installation of water-cooling and heating systems from pipes PP-R80-GF and PP-R80-AI, it is necessary to comply with the general requirements of SNiP III-4-80 "Safety in construction".

5.2. Work on the installation and welding of pipelines from pipes PP-R80-GF and PP-R80-AI is allowed for persons over 18 years of age who have undergone a medical examination, special training, introductory briefing and safety briefing at the workplace.

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

5.4. When welding pipes PP-R80-GF and PP-R80-AI and connecting parts from PP-R80, volatile products of thermal-oxidative degradation containing formaldehyde are released into the air (maximum concentration limit - 0.5 mg / m 3, hazard class 2); pairs of acetaldehyde (maximum concentration limit - 5.0 mg / m 3, class 3); pairs 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). Welding of PP-R80-GF and PP-R80-AI pipes should be carried out in a ventilated area.

5.5. Pipes PP-R80-GF and PP-R80-AI, when in contact with an open fire, burn with a sooty 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. real TR.

Ignition temperature of combined polypropylene pipes? 325 °C.

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

5.6. When working with a heating welding tool with a voltage of 220 V, you should follow the general electrical safety rules (GOST 12.2.007-75) and use dielectric mats and gloves.

Appendix 1

List of connecting parts made of PP-R80 (for socket welding), combined parts (for welding and threading) and brass parts (for threading) to pipes PP-R80-GF and PP-R80-AI

Name of parts	Schematic representation	Nominal diameter, mm
Connecting parts made of PP-R80 for socket welding
Elbow 90°
Equal tee
Tee
Equal crosspiece
Stub
Combined (PP-R80 and metal) connecting parts (under socket welding and carving)
Mounting elbow for water fittings
Coupling with transition to internal thread
Coupling with transition to external thread
Coupling with transition to an internal thread under a wrench
Coupling with transition to an external thread under a wrench
Elbow with transition to internal thread
Elbow with transition to external thread
Tee with transition to female thread
Tee with transition to external thread
Special parts made of PP-R80
Branch pipe with collar under union nut brass
Coupling with embedded electrospiral (for welding)
Special parts in brass
union nut
Threaded nipple
Threaded adapter with internal and external thread
Mounting clamps-metal supports
Combination shut-off valves

Annex 2

Tables for hydraulic calculations of pipeline systems

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

Outer diameter, mm

Consumption Q, l/s

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

Outer diameter, mm

Consumption Q, l/s

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

Appendix 3

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

1. The device "Fusioterm" for resistance heat welding of a socket (manually) pipes PP-R80-GF and PP-R80-AI with connecting parts from PP-R80 with a set of working elements for pipe diameters and parts 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. Scissors 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 production).

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).

* The supplier is Aquaterm (Moscow, 1st Krasnogvardeisky, 12, building 3).