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Rauvipex Duo

Rehau Rauvipex Duo Pipe 40+40/150 SDR11

Name: RAUVIPEX DUO 40mm Pre-Insulated Twin Pipe | Underground Heating
SKU: 72554
Price: 63.70 GBP
Availability: BackOrder

Original price was: £145.58£121.32.Current price is: £63.70£53.08. £63.70£53.08 inc VAT Incl. VATExcl. VAT

Got a large project? Get in touch to discuss your requirements and project terms

Product Code: 441029

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Description

RAUVIPEX DUO 40mm – 441029

RAUVIPEX DUO 40mm is a pre-insulated twin pipe system designed for underground heating installations requiring combined flow and return pipework. It is commonly used in medium-sized district heating and biomass heating systems.

The twin-pipe configuration allows both flow and return pipes to be installed within a single trench, reducing trench width compared to separate pipes. The insulated construction helps limit heat loss in buried conditions.

This size is typically used for medium-distance underground heating runs supplying multiple buildings or larger properties with increased heat demand.

RAUVIPEX DUO 40mm is compatible with REHAU-approved jointing. It is commonly specified for underground heating networks where dependable twin-pipe pipework is required.

RAUVIPEX UNO and DUO district heating pipe dimension diagram showing d, s, di and Dmax

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