De Marinis DESIGN SDMM male-male sleeve for wood stove flue systems
The De Marinis DESIGN SDMM male-male sleeve is a component of the DESIGN flue system mainly used to reverse the connection direction between flue components for wood-burning stoves, fireplaces and biomass appliances.
Its male-male configuration allows two components presenting female ends at the connection point to be joined.
It is manufactured from 2 mm carbon steel with a matt black high-temperature finish. Its robust construction and clean appearance make the DESIGN range particularly suitable for visible indoor installations.
The SDMM sleeve is available in nominal diameters Ø 120, 130, 140, 150, 160, 180 and 200 mm.
Main features
- Manufacturer: De Marinis
- Range: DESIGN
- Product family code: SDMM
- Product type: male-male sleeve
- Function: reversal of flue system connection direction
- Connections: male-male
- Material: carbon steel
- Steel thickness: 2 mm
- Finish: matt black
- Application: wood-burning stoves, fireplaces and biomass appliances
- Available diameters: Ø 120, 130, 140, 150, 160, 180 and 200 mm
- Temperature class: T600
- Pressure class: N1
- Marking: CE
- Reference standard: EN 1856-2:2009
What the DESIGN SDMM sleeve is used for
The SDMM sleeve is used where the direction of the flue system joints needs to be reversed.
Its male-male configuration allows two components with female ends at the intended connection point to be joined.
This component is commonly used at the base of the flue system or in specific installation layouts where the joint direction needs to be changed.
Before purchasing, select the correct diameter and check compatibility with the other DESIGN components used in the installation.
Male-male connection
The SDMM sleeve features two male ends and is therefore a specific fitting for installations where the normal direction of the joints must be changed.
It is not simply a short straight pipe section: its main purpose is to adapt the connection geometry between components of the flue system.
The correct joint direction must always be determined according to the system layout and the manufacturer's installation instructions.
Important: the SDMM sleeve should only be used where a male-male connection is required by the flue system configuration. Its position and installation direction must be checked before installation.
Technical data and classification
The SDMM belongs to the De Marinis DESIGN system manufactured in accordance with EN 1856-2:2009 for metal flue systems and connecting flues used with biomass appliances.
- Temperature class: T600
- Pressure class: N1
- Condensate resistance: D
- Corrosion resistance class: Vm
- Material: 2 mm carbon steel
De Marinis dimensions and product codes
The table below lists the available SDMM male-male sleeve variants. All dimensions are expressed in millimetres.
Øn indicates the nominal diameter, while Hu and I correspond to the dimensions shown in the technical drawing included on the product page.
| Finish | De Marinis code | Øn (mm) | Hu (mm) | I (mm) |
|---|
| Matt black | SDMM120 | 120 | 50 | 50 |
| Matt black | SDMM130 | 130 | 50 | 50 |
| Matt black | SDMM140 | 140 | 50 | 50 |
| Matt black | SDMM150 | 150 | 50 | 50 |
| Matt black | SDMM160 | 160 | 50 | 50 |
| Matt black | SDMM180 | 180 | 50 | 50 |
| Matt black | SDMM200 | 200 | 50 | 50 |
Technical note: all SDMM variants have Hu = 50 mm and I = 50 mm. The component features a male-male connection and is available in nominal diameters from Ø120 to Ø200 mm. Please also refer to the technical drawing included on the product page.
How to read the technical drawing
- Øn: nominal sleeve diameter
- Hu: useful dimension, 50 mm
- I: insertion dimension, 50 mm
- Connections: male-male
Comparing the technical drawing, dimensional table and selected diameter helps identify the exact De Marinis product code required for the installation.
DESIGN system compatibility
For correct dimensional continuity and system configuration, the use of De Marinis components from the same range and with the same nominal diameter is recommended.
Before combining components from different systems or manufacturers, their dimensional, technical and regulatory compatibility must be checked.
Installation
Diameter, sleeve position and joint direction must be determined according to the overall configuration of the connecting flue.
The DESIGN system is intended for indoor installation. Installation must be carried out by qualified personnel in accordance with the appliance manufacturer's instructions, De Marinis system requirements and applicable technical regulations.
