Rehau Rauvipex Uno Pipe 40/125 SDR11
Original price was: £76.94£64.12.£33.66£28.05Current price is: £33.66£28.05. £33.66£28.05 inc VAT Incl. VATExcl. VAT
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Description
RAUVIPEX UNO 40mm – 441007
RAUVIPEX UNO 40mm is a pre-insulated single pipe designed for underground heating applications where a single flow or return run is required. It is commonly used in district heating networks, biomass heating systems, and buried pipework connecting multiple buildings.
The pipe can be supplied in continuous lengths, allowing installation with fewer joints compared to segmented pipe systems. This can simplify installation and reduce the number of connection points along the pipe run. The outer casing is designed for buried conditions, while the insulation helps limit heat loss over longer underground routes.
The 40 mm size is typically used for medium-distance underground heating runs where higher flow rates are required. It is suitable for supplying heat from central plant rooms or energy centres to multiple buildings or larger properties.
RAUVIPEX UNO 40mm is compatible with Rehau approved jointing systems and is commonly specified where reliable single-run underground heating pipework is required with limited access for ongoing maintenance.

| Type | d (mm) | s (mm) | di (mm) | Dmax (mm) | U-value W/(mK) | Volume (l/m) | 2.4m x 1.2m Standard coil (m) | 2.8m x 1.6m Special coil (m) | Weight (kg/m) |
|---|---|---|---|---|---|---|---|---|---|
| UNO 25/100 | 25 | 2.3 | 20.4 | 100 | 0.095 | 0.33 | 325 | – | 1.6 |
| UNO 25/125 | 25 | 2.3 | 20.4 | 125 | 0.079 | 0.33 | 215 | – | 2.0 |
| UNO 32/100 | 32 | 2.9 | 26.2 | 100 | 0.116 | 0.54 | 325 | – | 1.5 |
| UNO 32/125 | 32 | 2.9 | 26.2 | 125 | 0.093 | 0.54 | 215 | – | 2.1 |
| UNO 40/100 | 40 | 3.7 | 32.6 | 100 | 0.145 | 0.84 | 325 | – | 1.6 |
| UNO 40/125 | 40 | 3.7 | 32.6 | 125 | 0.109 | 0.84 | 215 | – | 2.2 |
| UNO 50/125 | 50 | 4.6 | 40.8 | 125 | 0.144 | 1.31 | 215 | – | 2.4 |
| UNO 63/150 | 63 | 5.8 | 51.4 | 150 | 0.151 | 2.08 | 165 | 305 | 3.4 |
| UNO 75/175 | 75 | 6.8 | 61.4 | 175 | 0.155 | 2.96 | 110 | 210 | 5.7 |
| UNO 90/175 | 90 | 8.2 | 73.6 | 175 | 0.199 | 4.25 | 110 | 210 | 5.7 |
| UNO 110/175 | 110 | 10.0 | 90.0 | 175 | 0.287 | 6.36 | 110 | 210 | 5.7 |
| UNO 110/200 | 110 | 10.0 | 90.0 | 200 | 0.199 | 6.36 | 105 | 140 | 7.2 |
| UNO 125/200 | 125 | 11.4 | 102.2 | 200 | 0.286 | 8.20 | 105 | 140 | 7.5 |
| UNO 140/225 | 140 | 12.7 | 114.6 | 225 | 0.285 | 10.32 | 90 | 120 | 9.3 |
| DUO 20 + 20/125 | 20 | 1.9 | 16.2 | 125 | 0.111 | 0.21 | 215 | – | 2.4 |
| DUO 25 + 25/125 | 25 | 2.3 | 20.4 | 125 | 0.134 | 0.33 | 215 | – | 2.4 |
| DUO 32 + 32/125 | 32 | 2.9 | 26.2 | 125 | 0.176 | 0.54 | 215 | – | 2.3 |
| DUO 40 + 40/150 | 40 | 3.7 | 32.6 | 150 | 0.200 | 1.31 | 165 | 305 | 3.3 |
| DUO 50 + 50/175 | 50 | 4.6 | 40.8 | 175 | 0.181 | 2.07 | 110 | 210 | 5.7 |
| DUO 63 + 63/200 | 63 | 5.8 | 51.4 | 200 | 0.219 | 2.07 | 105 | 140 | 7.4 |
| DUO 75 + 75/225 | 75 | 6.8 | 61.4 | 225 | 0.253 | 2.96 | 90 | 120 | 9.1 |
1) Special order production
2) 2.8m x 1.2m
The documents and links below provide installation guidance and product information to support the use of the Rehau Rauvipex product range.
Below are some useful videos on Rehau Rauvipex.








