The potable water-certified CALPEX ULTRA DUO with a diffusion-tight aluminium layer on the two PEX inner pipes is a flexible, continuous and self-compensating district heating and sanitary pipe system with the world's best lambda value of 0.0199 W/m*K.
Operating temperature: max. 95 °C (sliding)
Operating pressure: PN 10
Dimensions: DN 15+15 to 50+50
Carrier pipe: two carrier pipes made of PE-Xa with a diffusion-tight aluminium layer
Thermal insulation: Polyurethane (PUR) with the world's lowest thermal conductivity of $λ = 0.0199 \text{ W/mK}$ for minimal heat losses
Outer casing: LLD-PE, robust and UV-resistant
High thermal efficiency and reduced operating costs
Pre-insulated bonded pipe system manufactured according to EN 15632-1/-2 for increased operational requirements
Application area: Local and district heating as well as potable water lines
Delivery form: In long, custom-specific coils for fast, low-connection and economic installation
We look forward to hearing from you.
>>> BIM data for CALPEX ULTRA DUO available soon <<<
| Type | Nominal diameter | PEX inner pipe | Min. bending radius | Max. ring length* | |
| Jumbo | Maxi | ||||
| DN | mm | m | m | m | |
| CXU 20+20/91 | 15 + 15 | 2 x 20 x 2.5 | 0.55 | 450 | 715 |
| CXU 20+20/111 | 15 + 15 | 2 x 20 x 2.5 | 0.75 | 300 | 450 |
| CXU 25+25/91 | 20 + 20 | 2 x 25 x 2.5 | 0.55 | 450 | 715 |
| CXU 25+25/111 | 20 + 20 | 2 x 25 x 2.5 | 0.75 | 300 | 450 |
| CXU 32+32/111 | 25 + 25 | 2 x 32 x 3.0 | 0.60 | 300 | 450 |
| CXU 32+32/126 | 25 + 25 | 2 x 32 x 3.0 | 0.80 | 192 | 350 |
| CXU 40+40/126 | 32 + 32 | 2 x 40 x 4.0 | 0.65 | 192 | 350 |
| CXU 40+40/142 | 32 + 32 | 2 x 40 x 4.0 | 0.85 | 160 | 260 |
| CXU 50+50/162 | 40 + 40 | 2 x 50 x 4.5 | 1.10 | 92 | 150 |
| CXU 50+50/182 | 40 + 40 | 2 x 50 x 4.5 | 1.30 | 52 | 90 |
| CXU 63+63/182 | 50 + 50 | 2 x 63 x 6.0 | 1.20 | 52 | 90 |
| CXU 63+63/202 | 50 + 50 | 2 x 63 x 6.0 | 1.40 | 46 | 80 |
| CXU 25+20/91 | 20 + 15 | 25 x 2.5 + 20 x 2.25 | 0.55 | 450 | 715 |
| CXU 32+20/111 | 25 + 15 | 32 x 3.0 + 20 x 2.25 | 0.60 | 300 | 450 |
| CXU 40+25/126 | 32 + 20 | 40 x 4.0 + 25 x 2.50 | 0.65 | 192 | 350 |
| CXU 50+32/126 | 40 + 25 | 50 x 4.5 + 32 x 3.00 | 1.10 | 192 | 350 |