De Marinis DESIGN SDRCA male-female increasing flue adapter

The De Marinis DESIGN SDRCA increasing adapter is a component of the DESIGN flue system designed to increase the diameter of the connecting flue by joining a smaller pipe section to a larger one.

It features a male-female configuration: the male side corresponds to the smaller Øn1 diameter, while the female side corresponds to the larger Øn2 diameter.

The fitting is manufactured from 2 mm carbon steel with a matt black high-temperature finish and is intended for indoor flue connections used with wood-burning stoves, fireplaces and biomass appliances.

The range includes several diameter combinations between Ø120 and Ø200 mm, allowing the adapter to be selected according to the specific installation.

Main features

• Manufacturer: De Marinis
• Range: DESIGN
• Product family code: SDRCA
• Product type: increasing adapter
• Connection: male-female
• Function: increase of flue gas passage diameter
• Øn1: smaller diameter, male side
• Øn2: larger diameter, female side
• Material: carbon steel
• Steel thickness: 2 mm
• Finish: matt black
• Application: wood-burning stoves, fireplaces and biomass appliances
• Diameter range: Ø120 to Ø200 mm depending on selected combination
• Temperature class: T600
• Pressure class: N1
• Marking: CE
• Reference standard: EN 1856-2:2009

What the DESIGN SDRCA increasing adapter is used for

The SDRCA is used where it is necessary to change from a smaller flue diameter to a larger diameter.

For example, it may be used where the appliance flue outlet has a smaller diameter than the following section of the connecting flue or chimney connection.

Increasing the diameter changes the cross-section of the flue and should therefore be assessed according to the appliance characteristics, system design and manufacturer's instructions.

Before ordering, both diameters must be checked carefully: Øn1 identifies the smaller side, while Øn2 identifies the larger side.

Male-female connection

On the SDRCA adapter, the male end always corresponds to the smaller diameter, while the female end corresponds to the larger diameter.

For example, an SDRCA120-150 has a Ø120 mm male side and a Ø150 mm female side.

This distinction is important because adapters with the same two nominal diameters but reversed connection direction perform different functions.

Important: increasing the diameter of a connecting flue must comply with the appliance manufacturer's instructions and the technical sizing of the flue system. The adapter should not be selected only on the basis of mechanical fit.

Technical data and classification

The SDRCA belongs to the De Marinis DESIGN system manufactured in accordance with EN 1856-2:2009 for modular 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
• System designation: T600-N1-D-Vm-L01200-GXXXNM*

De Marinis dimensions and product codes

The table below lists the available SDRCA increasing adapter combinations. All dimensions are expressed in millimetres.

Øn1 indicates the smaller male-side diameter, Øn2 the larger female-side diameter, while Hu and I correspond to the dimensions shown in the technical drawing included on the product page.

Technical note: all SDRCA variants have Hu = 120 mm and insertion dimension I = 50 mm. Øn1 identifies the smaller male-side diameter, while Øn2 identifies the larger female-side diameter. Always refer to the technical drawing included on the product page.

How to read the technical drawing

• Øn1: smaller nominal diameter, male side
• Øn2: larger nominal diameter, female side
• Hu: useful fitting dimension, 120 mm
• I: insertion dimension, 50 mm

Comparing the product code, dimensional table and technical drawing helps identify the exact increasing adapter required and prevents selecting the connection in the wrong direction.

DESIGN system compatibility

For correct dimensional continuity and system configuration, the use of De Marinis components from the same range is recommended, with careful verification of both diameters connected by the adapter.

Before combining components from different systems or manufacturers, their dimensional, technical and regulatory compatibility must be checked.

Installation

The increasing adapter must be selected according to the connection diameters, appliance characteristics and technical sizing of the flue system.

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.