Insulated Chimney Bottom adapter "+"
The indicated price is valid ordering till 26.09.2026.
Insulated Chimney Bottom Adapter "+" (Female)
Description and Purpose
The Bottom Adapter "+" (Female) is the starting element of the insulated chimney system. It is designed to transition from a standard single-wall pipe to the double-wall insulated structure.
This element allows you to start the insulated section of the chimney at any point in the assembly scheme — for example, directly on the boiler spigot or before passing through the ceiling after an uninsulated connection pipe.
Function and principle of operation:
The key feature of this adapter is the presence of an expanded bottom socket. The connection works on the "Female" principle: the single-wall pipe from the stove or boiler is inserted inside the adapter.
This design ensures a smooth entry of flue gases into the channel without turbulence. Immediately after the adapter, the gases enter the insulated environment, which maintains their temperature and stabilizes the draft.
Key Features
- Reliable insulation protection: A hermetic stainless steel ring completely covers the end layer of basalt wool, protecting it from moisture and shedding.
- Versatility: The element is identical to the adapters supplied with our 90° and 45° tees.
- Heat resistance: The inner liner is made of acid-resistant steel AISI 304L/316L (Class T600).
Technical Specifications
| Product type | Bottom Adapter (Start-Sandwich) |
| Connection type | "+" (Socket / Female) |
| Available diameters (mm) (inner / outer) |
100/200, 120/220, 130/225, 150/250, 160/250, 180/280, 200/300 |
| Inner material | Stainless steel AISI 304L / 316L (0.6 mm) |
| Outer casing | Stainless steel or Galvanized / Painted (RAL) |
| Insulation | Rock wool 50 mm (density 100 kg/m³) |
Installation Tips
- Sealing: When using a female connection (pipe inserted inside), it is recommended to use high-temperature stove sealant for full gas tightness of the joint.
- Fixation: The upper part of the adapter connects to the next insulated pipe. This joint must be secured with a locking band (clamp).
- Alternative: If unhindered condensate drainage is important for your system (assembly "by condensate"), use the Adapter "-" (Male).
