Fintherm - Uponor Infra

Solutions from Uponor Infra Fintherm

Pre-insulated pipes for heating

Pre-insulated piping was developed for district heating, where it is routinely used. District heating is characterised by long transportation distances that range from tens of metres to tens of kilometres of pipelines.

These pipelines distributing hot water or steam can be used with remote sources of heat that are more powerful and more effective at high-temperature combustion than decentralised units, and are fitted with effective filters to reduce emissions. Pre-insulated pipes for district heating can also be used with renewable sources of heat or to transport surplus heat from power stations and industrial and agricultural production.

All pre-insulated piping systems for district heating contain a high-quality steel carrier pipe which allows the transportation of high-temperature and high-pressure heat media with a total service life of up to 30 years. In addition, heat loss can be significantly reduced by selecting thicker insulation.


Pre-insulated piping systems for district heating

Wehotherm Standard
Wehotherm Standard - Fintherm Uponor

Pre-insulated steel pipes with PUR insulation

The Wehotherm® Standard pre-insulated pipeline system is used for underground heat and cold distribution. The steel carrier pipe is insulated with hard polyurethane foam blown with cyclopentane. The casing pipe, manufactured from high-density polyethylene, protects the pre-insulated pipe from the effects of the outside environment.

Wehotherm® Standard pre-insulated pipes meet all of the requirements of European standards EN 253, EN 448, EN 488 and EN 489, including the requirements of the European Association EUROHEAT & POWER and the German association AGFW/FW401.

Pipe operating parameters:
The maximum operating temperature is 142°C (150°C on a short-term basis) for a maximum operating overpressure of 2.5 MPa with a service life of 30 years. Pipes with PUR foam insulation with an increased thermal resistance of up to 165°C can be supplied on request.

Wehotherm Twins

Paired pre-insulated steel pipes with PUR insulation

The Wehotherm® Twins pre-insulated piping system is used for underground heat and cold distribution. It consists of a pair of steel carrier pipes insulated with hard polyurethane foam within a single polyethylene casing.

Wehotherm® Twins pre-insulated pipes are used for maximum heat loss prevention, space saving and cost reduction of construction works compared to separate installation of flow and return pipes.

Wehotherm® Twins pre-insulated pipes meet all of the requirements of European standards EN 15698-1, EN 253, EN 448, EN 488 and EN 489, including the requirements of the European Association EUROHEAT & POWER and the German association AGFW/FW401.

Pipe operating parameters:
The maximum operating temperature is 130°C and the maximum operating overpressure is 2.5 MPa with a service life of 30 years. The maximum temperature difference between the flow and return pipes is 50°C.

Wehotherm Spiro
Wehotek Spiro - Fintherm Uponor

Pre-insulated steel pipes with PUR insulation for above-ground distribution

The Wehotek Spiro pre-insulated pipeline system is used for above-ground and industrial heat and cold distribution. The steel carrier pipe is insulated with hard polyurethane foam protected by an outer casing made of zinc-coated, spiral-wound superimposed sheets. On request, outer casing pipe can also be made of steel or aluminium spiral-overlaid sheets.

Pipe operating parameters:
The maximum operating temperature is 142°C (150°C on a short-term basis) for a maximum operating overpressure of 2.5 MPa with a service life of 30 years. Pipes with PUR foam insulation with an increased thermal resistance of up to 165°C can be supplied on request.