Single-layer pipes made of polyethylene of increased temperature resistance PE-RT are intended for use in drinking and household-drinking systems, cold and hot water supply. If there are no restrictions on the content of dissolved oxygen in the coolant, it is possible to use it in systems of water low-temperature (up to 80 ° C) heating, water heated floors and walls, soil heating, as well as as process pipelines transporting liquids that are not aggressive to pipe materials.
The material PERT (Polyethylene of Raised Temperature resistance) is a heat-resistant polyethylene. This material is obtained by replacing "flat" butene in a chemical reaction with octene, which has a structure branched in space. Subsequently, it forms side branches near the main chain, which are intertwined monomer chains.
Thanks to this structure, PERT acquires properties such as increased long-term heat resistance and increased strength, but retains the flexibility inherent in conventional polyethylene.
The advantages of pipes made of heat-resistant polyethylene are high strength and heat resistance, resistance to corrosion, overgrowth, silting and salt deposition; high chemical resistance, resistance to mechanical damage, low roughness, high noise absorption capacity, low thermal conductivity, high plasticity and low weight, technological and economical installation.
Compliance with the passport operating conditions guarantees a 50-year service life of the products.
| Single-layer pipe PERT (1,2,4, XB service classes) | |||||
|---|---|---|---|---|---|
| vendor code | Name | Color | |||
| PERT 1 1620B | Trumpet PERT 16,0 х 2,0 Palanzh | Red/Blue | |||
| PERT 1 2020B | Trumpet PERT 20,0 х 2,0 Palanzh | Red/Blue | |||
Geometric characteristics of pipes PERT
| 16×2,0 | 20×2,0 | |
|---|---|---|
| Outside diameter, mm | 16 | 20 |
| Wall thickness, mm | 2 | 2 |
| Inner diameter, mm | 12 | 16 |
| Standard Dimension Ratio SDR | 8 | 10 |
| Series S | 3,5 | 4,5 |
| Weight 1 r.m. pipes, g | 84 | 108 |
| Internal volume 1 r.m. pipes, l | 0,113 | 0,201 |
| Pipe length in a coil, m | 200 | 200 |
| Minimum bending radius, mm | 80 | 100 |
Pipe specifications PERT
| Service class according to GOST 32415 | 1,2,4,ХВ |
|---|---|
| Maximum working pressure, MPa. Trumpet 16×2,0 |
1/0,8 2/0,6 4/0,8 ХВ/1,0 |
| Maximum working pressure, MPa. Trumpet 20×2,0 |
1/0,6 2/0,6 4/0,6 ХВ/1,0 |
| Working temperature Тslave, °С | 70 |
| Maximum working temperature Тmax, °С | 80 |
| Short-term (emergency) temperature Тemer, °С | 100 |
| Thermal conductivity coefficient, W / m ∙ K | 0,38 |
| Linear expansion coefficient, mm / m ∙ K | 0,15 |
| Equivalent roughness coefficient, mm | 0,007 |
| Service life subject to the passport operating conditions, years | 50 |
* The pipe does not have an anti-diffusion layer, therefore its oxygen permeability exceeds 0.1 g/м3•day., what to consider when designing heating systems.
Pipe packing specifications PERT
| 16×2,0 | 20×2,0 | |
|---|---|---|
| Pipe length in a coil, m | 200* | 200* |
| Coil dimensions (LxWxH), mm | 700 х 700 х 220 | 700 х 700 х 220 |
| Coil weight, kg | 16,8 | 21,6 |
| Bay volume, m3 | 0,085 | 0,102 |
| Number of coils on a pallet, pcs. | 14 | 14 |
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