Valsir Mixal® system is a multilayer piping solution designed for use in potable water, heating and cooling systems. It features a five-layer pipe construction with an internal PE-Xb layer, a thick aluminium alloy core, and an outer PE-HD layer, connected by a high-performance glue, ensuring flexibility, durability, and resistance to high temperatures and pressures.

This system is suitable for surface-mounted, embedded, and pre-insulated installations in residential, commercial, public buildings, laboratories and industrial installations.

Pipe construction:

Inner layer: Cross-linked polyethylene (PE-Xb).
Middle layer: Aluminium alloy (oxygen barrier).
Outer layer: High-density polyethylene (PE-HD).

Performance characteristics:

Excellent resistance to pressure and thermal expansion.
High mechanical strength and chemical resistance.
Low internal roughness for reduced pressure losses.
Oxygen impermeable aluminium layer for system longevity.

Fittings compatibility:

Valsir Mixal is compatible with WRAS-approved press-fitting ranges:

Pexal® Brass Fittings (12–32 mm):
- Brass body with stainless steel sleeve.
- Multi-profile compatibility: H, TH, U, C, VAL.
- Leak-detection-press function for safety.
- Tamper-proof design.
Bravopress® PPSU Fittings (16–32 mm):
- Made from high-performance PPSU technopolymer.
- Excellent resistance to corrosion and chemicals.
- Leak detection function and tamper-proof construction.
- Multi-crimping compatibility.

Installation features:

Compatible with standard pressing tools.
Fast installation thanks to the bendable pipes and pre-insulated pipe coils.
Supports water testing prior to full commissioning.
Leak detection capabilities enhance quality control.

Pre-insulated pipe options:

Available in red, blue, and grey outer jackets.
Fire-rated insulation (B-s1, d0 according to EN 13501-1).
Insulation thicknesses: 6 mm to 25 mm.
Thermal conductivity: 0.037 W/m·K.

Transition fittings:

To ensure maximum versatility and compatibility with existing systems, the Valsir Mixal range includes a comprehensive suite of transition fittings for a seamless connection to metal or mechanical installations:

Copper press fittings (M profile): secure press-fit connection with copper systems.
Copper compression fittings: traditional mechanical compression joints.
Copper valve adapters: transition fittings for direct connection to copper-bodied valves.
Welded copper tails: available straight or angled, also with chrome finish for radiator or visible connections.
Threaded fittings:
- Male and female threaded adapters.
- Swivel female connections for easy coupling to existing components.