87 Degree Reducing Tees – MF range

87 Degree Reducing Tees – MF range

To keep in line with the developments in the market and reductions in the size of boiler cases, leading to reduced distances between boiler spigots in cascade systems, Schiedel has reduced the overall heights of the reducing tees used in these systems.

The reducing tees are now produced exclusively with an 87° angle on the branch to ensure that condensate can drain off in line with current technical guidance for condensing boilers. Reduction in the tee height makes fitting of the tees together with an adjustable section between them simpler to match the distance between boiler spigots in the latest cascade systems.

Features Benefits
Reduced height on the tee body Helps meet the reduced distance between modern condensing boilers in a cascade system
87° on the branch angle Ensures that condensate can drain down the header system effectively, in line with current technical requirements for condensing boilers
Lighter product Simpler to handle, transport and install
Interfits with standard adjustable pipes Allows for adjustment to match the exact distances between spigots on the boilers
SKU: 87 Degree Reducing Tees – MF range Categories: ,

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The Metaloterm® MF system is a modular twin-wall insulated flue/chimney system, made of stainless steel, with a sealing ring. Metaloterm® MF is a universal flue/chimney system that is suitable for both high and low temperatures, non-condensing and condensing applications with flue gasses in positive and negative pressure. It can resist a chimney fire.

Therefore the system is suited for a wide range of applications such as boilers, stoves and ovens. The product range also contains a wide variety of silencers. For Passive houses, the Metaloterm assortment provides the Iso-block which can be combined with MF. The system can also be used for CHP applications, in this case, a special VITON® sealing ring might be necessary.

Due to the proven quality, Metaloterm® MF has a 10-year guarantee.


  • Atmospheric gas-fired boilers
  • Condensing boilers
  • Wood-fired stoves
  • Industrial ovens, large-scale establishments


  • Universal chimney/flue system
  • Inner- and outer wall from high quality stainless steel
  • No terminal bridges, uninterrupted insulation from base plate to top stub
  • Stress free thermal expansion
  • Fast-build system without the need of sealants
  • Compatible with system Metaloterm® ME, UE and EN
  • High density and high quality insulation
  • High-temperature silicone sealing ring
  • Lightweight elements
  • Immediately ready for use
  • Chimney fire resistant

CE approved | EN 1856-1

T200 P1/H1 W V2 L50040 O10
T450 N1 W V2 L50040 G60
T450 N1 D V3 L50040 G60 (Scenario 1: Combustible Floor & Combustible Enclosure)
T450 N1 W V2 L50040 G60
T450 N1 D V3 L50040 G50 (Scenario 2: Non combustible Floor and Non Combustible enclosure, or in Free Air)

CE approved | EN 1856-2:

T200 P1/H1 W V2 L50040 O10 M
T450 N1 W V2 L50040 O40 M
T450 N1 D V3 L50040 G70 M

* Above CE designations refer to Ø100-300 – For larger diameters refer to Schiedel Metaloterm website.