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Rauvipex Duo

Rehau Rauvipex Duo Pipe 20+20/125 SDR11

Name: RAUVIPEX DUO 20mm Pre-Insulated Twin Pipe | Underground Heating
SKU: 74321
Price: 40.12 GBP
Availability: BackOrder

Original price was: £91.69£76.41.Current price is: £40.12£33.43. £40.12£33.43 inc VAT Incl. VATExcl. VAT

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Product Code: 441023

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Description

RAUVIPEX DUO 20mm – 441023

RAUVIPEX DUO 20mm is a pre-insulated twin pipe system designed to carry both flow and return lines within a single casing for underground heating pipework. It is commonly used for small buried heating connections and short-distance underground runs.

The twin-pipe design allows flow and return pipework to be installed together, reducing excavation compared to separate single-pipe installations. The insulation helps limit heat loss in buried pipework.

This size is typically used for small buildings, outbuildings, or secondary heating circuits where compact underground installation and minimal ground disturbance are required.

RAUVIPEX DUO 20mm is compatible with REHAU-approved jointing systems. It is commonly specified for smaller underground heating installations where reliable 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