Valsir Pexal® system is a multilayer piping solution engineered for potable water, heating, and cooling applications across residential, commercial, public, industrial and laboratory environments. It incorporates a durable five-layer structure consisting of cross-linked polyethylene (PE-Xb) inner and outer layers, bonded to a central aluminium alloy core, connected by a high-performance glue, offering excellent mechanical and thermal behaviour.

Pipe construction:

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

Performance characteristics:

High resistance to pressure, corrosion, and temperature variations.
Low thermal expansion and minimal pressure loss.
Durable, flexible structure for easy handling and installation.
Oxygen barrier core extends the lifespan of heating systems.

Fittings compatibility:

The Valsir Pexal system supports a complete range of WRAS-approved press and full-bore fittings, enabling scalable use across small and large-diameter installations:

Pexal® Brass Fittings (Ø 16–90 mm):
- Brass body with stainless steel sleeve.
- Multi-profile compatibility: H, TH, U, C, VAL.
- Leak-before-press detection.
- Tamper-proof design for installation security.
Bravopress® PPSU Fittings (Ø 16–63 mm):
- Manufactured from PPSU technopolymer.
- Highly resistant to chemicals and corrosion.
- Multi-crimping compatibility and leak detection feature.
- Tamper-proof.
Pexal XL Modular Fittings (Ø 40–110 mm):
- PPSU fittings for large-diameter pipes.
- Lightweight and easy to install.
- Ideal for limited-space applications.
Pexal Easy Fittings (Ø 16–75 mm):
- Technopolymer full-bore fittings.
- Reusable, fast-connection design.
- Designed for high flow and fast installation.

Installation features:

Compatible with commonly used pressing tools.
Flexible pipe coils simplify routing and reduce fittings.
Supports water testing prior to full commissioning.
Integrated leak detection for enhanced safety and quality assurance.

Pre-insulated pipe options:

Pre-insulated pipes available up to Ø 32 mm.
Available with red, blue, or grey PE outer jackets.
Fire-rated insulation: B-s1, d0 (EN 13501-1).
Insulation thicknesses: 6 mm to 25 mm.
Thermal conductivity: λ = 0.037 W/m·K.

Transition fittings:

To ensure maximum versatility and compatibility with existing systems, the Valsir Pexal 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.
Flanged fittings: for mechanical connections in plant rooms and industrial systems.
Threaded fittings:
- Male and female threaded adapters.
- Swivel female connections for easy coupling to existing components.

Pexal & Pexal Brass + Pexal XL PPSU KIWA UK Reg 4