Thermal Expansion in Open Installation
Since TECHNO GREEN & TECHNO UV pipes must have enough space to expand, an expansion control must is much needed for straight and long pipes. TECHNO GREEN & TECHNO UV- pipes for cold water and heating plants makes this possible.
Expansion Co-Efficient:
- For Glass fiber Reinforced PP-R pipe: α = 0,05 mm/mK
- For Standard PP-R Pipe: α = 0,15 mm/mK
Calculation of Change in Length:
∆L = α x L x ∆T
Where,
- ∆L = Change in length in mm
- L = Length of pipe
- ∆T = The difference between installation & Working Temperature
COMPARISON PPR & PPR-GF (Thermal Expansion)
| Description | PPR | PPR-GF | |
|---|---|---|---|
| L | Pipe length in meter | 10 | 10 |
| α | Linear expansion coefficient | 0.15 | 0.05 |
| Ti | Temperature installation (°C) | 30 | 30 |
| Tw | Temperature working (°C) | 70 | 70 |
| ∆T | Ti – Tw | 40 | 40 |
| ∆L | Change in length (α x L x ∆T) | 60 | 20 |
From the above comparison the value ∆L reduced 3 times comparing with the normal PPR Pipes
PPR UV Pipe
Description
INTRODUCTION
The TECHNO PP-R UV Piping system is made from a Polypropylene Random Copolymer (PP-R) along with UV Stabilizer to protect the pipe from sunrays and UV oxidation effect.
In general Thermoplastic material vulnerable to ultraviolet (UV) deprivation upon extended experience to sunlight. Such type of evidence can be observed as a color change, Surface Degradation, and powdering effect. The deprivation rate may occur varies based on the atmospheric air, water, oxygen, and other oxidizing agents. The use of black color infusion UV pipes will improve weathering characteristics by helping to protect ultraviolet light.
The systems complying the standards DIN 8077/ DIN8078 and UNI EN ISO 15874. The Techno PPR pipes used for hot and cold-water supply system and potable water applications. The pipes are specially made for outdoor installation where the pipes are exposed to sunlight.
The systems complying the standards DIN 8077/ DIN8078 and UNI EN ISO 15874. The Techno PPR pipes used for hot and cold-water supply system and potable water applications. The pipes are specially made for outdoor installation where the pipes are exposed to sunlight.
MAIN ADVANTAGES
of The PP-R Glass Fiber Reinforced Pipe
01
Low thermal expansion (α= 0.05).
02
Higher stiffness than standard PP-R pipe.
03
Larger support distance comparing with Regular PPR
04
Similar like Regular PPR Pipes, it’s easier and faster installation, it does not require peeling before the welding operation.
05
Glass fiber PP-R pipes have thermal expansion co-efficient is almost equivalents to Aluminum stabi pipes, they can conveniently be used in the areas where aluminum pipes are used.
SPECIFICATIONS
of the product
Technical Specification:
PN 16 PIPES “3.2 / SDR 7.4 / PN 16”
| Product Number | Product Description | Outer Diameter | Inner Diameter | Wall Thick | T133020020 | Techno PP-R Multilayer Pipe 20mm -PN16 | 20 | 14.4 | 2.8 |
|---|---|---|---|---|
| T133020025 | Techno PP-R Multilayer Pipe 25mm -PN16 | 25 | 18 | 3.5 |
| T133020032 | Techno PP-R Multilayer Pipe 32mm -PN16 | 32 | 23.2 | 4.4 |
| T133020040 | Techno PP-R Multilayer Pipe 40mm -PN16 | 40 | 29 | 5.5 |
| T133020050 | Techno PP-R Multilayer Pipe 50mm -PN16 | 50 | 36.2 | 6.9 |
| T133020063 | Techno PP-R Multilayer Pipe 63mm -PN16 | 63 | 45.8 | 8.6 |
OPERATING CONDITION:
- For Cold water application: 24.5 bar at 20°C
- For Hot water application : 8.1 bar at 70°C
- (Max 95°C for short peak)
This allowable operating pressure will be applicable for 50 years life span as per the standard DIN 8077 table 9 (SF-1.25)
PN 20 PIPES “2.5 / SDR 6 / PN 20”
| Product Number | Product Description | Outer Diameter | Inner Diameter | Wall Thick | T134020020 | Techno PP-R Multilayer Pipe 20mm -PN20 | 20 | 13.2 | 3.4 |
|---|---|---|---|---|
| T134020025 | Techno PP-R Multilayer Pipe 25mm -PN20 | 25 | 16.6 | 4.2 |
| T134020032 | Techno PP-R Multilayer Pipe 32mm -PN20 | 32 | 21.2 | 5.4 |
| T134020040 | Techno PP-R Multilayer Pipe 40mm -PN20 | 40 | 26.6 | 6.7 |
| T134020050 | Techno PP-R Multilayer Pipe 50mm -PN20 | 50 | 33.4 | 8.3 |
| T134020063 | Techno PP-R Multilayer Pipe 63mm -PN20 | 63 | 42 | 10.5 |
| T134020075 | Techno PP-R Multilayer Pipe 75mm -PN20 | 75 | ?? | ?? |
| T134020090 | Techno PP-R Multilayer Pipe 90mm -PN20 | 90 | ?? | ?? |
| T134020110 | Techno PP-R Multilayer Pipe 110mm -PN20 | 110 | ?? | ?? |
| T134020160 | Techno PP-R Multilayer Pipe 160mm -PN20 | 160 | ?? | ?? |
OPERATING CONDITION:
- For Cold water application: 30.9 bar at 20°C
- For Hot water application : 10.2 bar at 70°C
- (Max 95°C for short peak)
This allowable operating pressure will be applicable for 50 years life span as per the standard DIN 8077 table 9 (SF-1.25)
SPECIFICATIONS
of Raw Material
Physical Properties:
| PHYSICAL PROPERTIES "Poly Propylene" | Values | Unit | Melt Index (230℃, 2.16 kg) | 0.25 | g/10min |
|---|---|---|
| Density | 0.9 | g/cm3 |
| Tensile Strength at Yield | 270 | Kg/cm2 |
| Flexural Modulus | 9000 | Kg/cm2 |
| Notched Izod Impact Strength (23℃ /-10℃) | N.B /5.0 | Kg.cm/cm |
| Rockwell Hardness | 75 | R-Scale |
| Heat Deflection Temperature | 90 | ℃ |
| Vicat Softening Point | 130 | ℃ |
| Mean Coefficient of Linear Thermal Expansion (0℃ - 80℃) | 1.5*10-4 | K-1 |