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Polyethylene for waste and drainage systems

Manufacturer Valsir

Valsir HDPE, the versatility of a waste system in high density polyethylene.
Valsir HDPE is a fusion welded system made up of pipes, fittings and accessories, suitable for all installation types, destined to waste and rainwater drainage.
Valsir HDPE is the ideal solution for installations above ground, thanks to its resistance to UV light; and below ground or embedded in concrete, thanks to its exceptional mechanical characteristics.
Valsir HDPE is produced in compliance with European Standard EN 1519 and can be used in waste systems at low (as low as -40°C) and high temperatures (up to +95°C), in ventilation systems of waste networks and for rainwater drainage inside civil and industrial buildings, hotels, hospitals and laboratories thanks to its high resistance to chemical compounds.
The wide range of pipes, fittings and accessories allows a complete waste system to be constructed, from the branches of the sanitary fixtures, to the soil stacks and soil manifold.

Further details

A system with advanced characteristics
from DN 32 to DN 315
Wide range of diameters from DN 32 mm to DN 315 mm, available in SDR 26 and SDR 33.

High chemical resistance
High chemical resistance to substances dissolved in civil and industrial waste waters.

The pipes are stabilized to reduce dimensional variations and contain carbon black for UV lightresistance.

Extreme Temperatures
Resistance to intermittent discharges at temperatures as high as 95°C. High resistance to extremely rigid temperatures as low as -40°C.

Wide range of transition fittings for connection to other waste systems such as cast iron, PE, PP, PVC.

The product, its total recyclability and the production processes used are all based on the Green Building principles, respecting the environment and conserving resources.
A range that stands out
The range is made up of 3 and 5 m length pipes, available in SDR 26 and SDR 33 and a wide range of fittings and accessories that allow the most varied system configurations to be constructed.
From a 32 mm diameter for creating branches, to a 315 mm diameter for waste manifolds.
The range is made complete with coupling accessories for connections to the other Valsir waste systems, anchor clips and all the equipment necessary for installation.
Wide range of diameters
Wide range of diameters from DN 32 mm to DN 315 mm, available in SDR 26 and SDR 33.
Joints: Ease and versatility of installation
Valsir HDPE is extremely easy to use, it offers numerous jointing methods and meets all installation requirements.
Valsir HDPE is used to construct drainage systems for waste water and rainwater in residential buildings
and in collective buildings such as offices, hotels, hospitals, schools, police barracks, factories, sports centres.
Its excellent resistance to UV light allows surface mounting both indoors and outdoors.

Manual butt-welding
Thanks to the extremely light weight of polyethylene, pipes and/or fittings up to a 63 mm diameter can be butt-welded using a manual process which involves the use of a heating plate only. It’s an extremely convenient jointing method on site.

Machine butt-welding
Valsir supplies butt-welding machines that weld up to 315 mm diameters. This process is extremely useful for the prefabrication of system parts that are then installed and connected on site using the other numerous jointing methods, such as welding with electrofusion sleeves.

Electrofusion couplings
Thanks to the use of electrofusion couplers that are available in 40 mm diameters to 315 mm diameters, all system parts can be prepared. Valsir supplies two types of welding machines that guarantee rapid, uncomplicated and extremely reliable welding.
Solutions for all requirements
Valsir can supply a waste system with a 110 mm and 160 mm diameter ventilation branch.
This is the ideal solution in high-rise buildings where the simultaneous use factor of the sanitary appliances is high.
This innovative waste system guarantees excellent ventilation of the waste stack and branches on each floor, limiting pressure fluctuations in the system.
This system also offers significant advantages in terms of money savings thanks to the possibility of constructing single stacks (therefore without installing parallel ventilation) in one single diameter, either 110 mm or 160 mm with double the draining capacity as compared to systems with primary ventilation.

Single soil stack
Single soil stack, a parallel ventilation pipe is not required.

Increase in drainage flow
Increase in drainage flow in comparison with conventional systems.

Reduction in speed
of waste flow.

Excellent ventilation
of the stack and branches of each floor.

Up to 6 connections
on one branch fitting.

up to 195* apartments
Up to 45* apartments can be connected to the same soil stack with a 110 mm diameter and up to 195* apartments can be connected to a 160 mm diameter soil stack.

* The number of apartments depends on the composition of the same.
The same diameter is up to 2.2 more performant
Accessories for all installation requirements
Surface mounting of pipes requires the use of suitable brackets that must withstand the weight of the pipe, the weight of the waste water and the forces that are generated by expansion and contraction.
In relation to the type of bracketing chosen, the so-called guide points and fixed points (or anchor points of the pipeline) must be provided. In all cases, if the waste system is required to reduce noise then sound reducing brackets with anti-vibration rubber must be used.


HDPE Manual butt-welding

Polyethylene for waste and drainage systems HPDE - Valsir

HDPE machine butt-welding

Polyethylene for waste and drainage systems HPDE - Valsir

Electrofusion couplings HDPE welding

Polyethylene for waste and drainage systems HPDE - Valsir
Polyethylene for waste and drainage systems HPDE - Valsir

Polyethylene for waste and drainage systems HPDE - Valsir
Polyethylene for waste and drainage systems HPDE - Valsir

Polyethylene for waste and drainage systems HPDE - Valsir
Valsir - Corporate movie
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