THE RAW MATERIAL
Astral Silencio’s polypropylene mineral-filled compound has been carefully designed to provide excellent acoustic and mechanical properties. This low-noise pipe has a molecular density of 1.9 gm/cm3, which is one of the highest in the industry, and it significantly improves the sound-dampening properties of the wastewater drainage system. Our compound offers superior ring stiffness and impact resistance, essential for a drainage and sewerage piping system.
Apart from these unique properties, these low-noise drainage pipes are durable, corrosion-resistant and able to withstand the chemical aggression of various kinds of wastewater. The smooth inner surface of these silent pipes prevents scaling and incrustation.
Pipe Structure
An outstanding feature of Silencio low-noise drainage pipes is the 3-layer construction and adaptation of each layer to its respective requirements. Technically desirable characteristics are optimised in a targeted way. This is achieved with modern design principles of Sandwich construction.
Three separate layers impart unique characteristics to the pipe. The abrasion-resistant, low-friction inner layer ensures the easy transit of waste. The mineral-filled mid-layer of these silent pipes ensures enhanced sound-dampening properties and also offers increased stiffness. Finally, the robust outer layer is tough enough to withstand impacts and shocks.
These ideal characteristics of Silencio low-noise pipes are achieved through the three-layer structure of the pipe and the specialised adaptation of each layer to its respective requirement:
- High ring stiffness
- Excellent impact strength of the outer layer at low temperature
- Increased UV-resistance
- Abrasion-resistant and smooth inner layer
- A highly rigid and sound-insulating middle layer made of mineral reinforced Polypropylene
External Layer – Polypropylene | Extremely Tough | Sturdy | Impact Resistant
Middle Layer – Mineral Reinforced Polypropylene | Very High Ring Stiffness | Excellent Acoustic Properties
Internal Layer – Polypropylene | Superior Flow Performance | Resistant against high water temperatures and chemicals
Fittings and Features
The pipe system would experience local vibrations at redirections due to critical drainage conditions. This can harm sound-related properties. To minimise this effect and to counter the negative influences, it is very important to have proper design and mass of fittings. Silencio silent pipes and fittings are specifically designed to address this. The fittings also have the same density of 1.9 gm/cm3 as pipes and are made of identical PP mineral-filled compounds. Special fittings are designed like access pipes, Clean Tees and Bends (Door Tee and Door Bend) with a special inner cap that ensures smooth flow as well as minimum sound generation.
Key Properties
- Noise Insulation at its Best
The high molecular formula of the middle layer enables superior acoustic requirement and performance. Excellent soundproofing performance is measured in Fraunhofer laboratory, which complies with EN 14366 (Laboratory measurement of noise from wastewater installations), equal to <10dB with a flow rate of 2 LPS.
Silencio low-noise pipes have a high molecular weight and impart excellent physical and mechanical properties to the pipe. These silent pipes give high ring stiffness to the pipes, and hence, they can be used as an effective alternative to cast iron drainage pipes.
Without any special tools, the push-fit joining installation of these low-noise drainage pipes is simple, quick and efficient. No solvent cement is needed. Also, the joints of these silent pipes are leakproof.
Silencio can handle the waste liquid with a pH value of 2 to 12. This low-noise pipe has a high resistance to the most common chemical substances. The inner layer of these silent pipes is made of PP, which has natural properties that prevent the accumulation of deposits in the pipe.
- High Impact Resistance, Extremely Tough
Both the external and internal layers of PP have excellent impact strength and abrasion resistance with a smooth inner surface. These low-noise pipes show high impact resistance at extremely harsh temperatures as low as -20°C / -4°F).
Silencio is hot water-resistant – short term 95°C / 203°F and long term 90°C / 194°F. Also, it has a low coefficient of linear expansion.
The smooth inner surface of these low-noise drainage pipes does not allow the waste liquid to stick to the surface. It enables superior flow and fewer chances of blockage.
- Eco-friendly Product and Process
Silencio silent pipes are designed with a strong eco-friendly focus aiming to minimise their environmental impact throughout their life cycle. From production to disposal, these low-noise drainage pipes use less energy, water, and resources, while generating less waste.
