VENTIT cone distributor 8xDN90 with 160 mm throat
The VENTIT 8xDN90 distributor splits the air from the Ø160 mm main duct of a heat recovery unit into 8 DN90 ducts (90 mm outside, 75 mm inside diameter) leading to individual rooms. The outlets are arranged in 2 rows of 4. Internal channels guide the air smoothly to the outlets, so the distributor has a low pressure loss and splits the air evenly when the room ducts are connected.
Key benefits
- Low pressure loss: 4.0 Pa at 240 m³/h (30 m³/h per outlet), 10.5 Pa at 400 m³/h.
- Even airflow split: outlet deviation ±3.8 % with straight DN90 ducts connected to the rooms.
- Quick duct connection: the DN90 ducts are held by orange pipe locks and sealed by rubber seals.
- Ceiling mounting with adjustment: slotted holes allow ±5 mm shift if the wall plug is not exactly in place.
- Crosstalk attenuation: speech from one room is 14.2 dB quieter in the neighbouring outlet (17.5 dB on average) – without acoustic foam, comparable to a sheet-metal box lined with 10 mm foam (12.5 dB).
- Compact height: only 207 mm below the ceiling.
Computational flow simulation results
We verified the airflow in the distributor by computational flow simulation (physics-based calculation) at a supply of 240 m³/h. The even split applies with straight DN90 ducts connected to the rooms (typically approx. 10 m DN90 with a terminal valve per branch, about 20 Pa per branch). With very short branches the split may be less even.
Technical data
| Number of outlets | 8 × DN90 (2 rows of 4) |
|---|---|
| Outlet ducts | DN90 – Ø90 mm outside, Ø75 mm inside |
| Throat (unit connection) | Ø160 mm |
| Recommended airflow | 30 m³/h per outlet (240 m³/h total) |
| Pressure loss | 4.0 Pa at 240 m³/h · 10.5 Pa at 400 m³/h |
| Outlet airflow deviation | ±3.8 % (with connected ducting) |
| Crosstalk attenuation | 14.2 dB neighbouring outlets, 17.5 dB average (speech, A-weighted) |
| Dimensions (W × H × L) | 464 × 207 × 270 mm (width incl. brackets, height below ceiling) |
| Weight | approx. 1.6 kg |
| Material and colour | 3D printed PLA, dark anthracite, orange pipe locks |
| Mounting | ceiling, slotted holes with ±5 mm adjustment (anchors not included) |
| Package contents | distributor and 8 rubber DN90 duct seals |
Installation
- Screw the distributor to the ceiling through the slotted holes in the brackets (anchors suitable for the ceiling).
- Fit the rubber seals on the DN90 ducts, push them into the outlets and secure them with the pipe locks.
- Connect the Ø160 mm throat to the main duct of the heat recovery unit.
Frequently asked questions
What airflow can the 8xDN90 distributor handle?
The recommended airflow is 30 m³/h per outlet, i.e. 240 m³/h in total, with a pressure loss of 4.0 Pa. Even at 50 m³/h per outlet (400 m³/h) the pressure loss is only 10.5 Pa.
Does the distributor split the air evenly to all rooms?
Yes – with straight DN90 ducts connected to the rooms (typically approx. 10 m with a terminal valve) the outlet airflow deviation is ±3.8 %. The exact airflow for each room is set with the terminal valves.
Which ducts fit the distributor?
The outlets fit DN90 ducts with 90 mm outside and 75 mm inside diameter, such as AirFlex DN90. The throat connects to the main duct of the unit.
How is the distributor installed?
On the ceiling through slotted holes with ±5 mm adjustment. It needs 207 mm below the ceiling. Ceiling anchors are not included, the rubber duct seals are.
Does sound travel between rooms through the distributor (crosstalk)?
The distributor attenuates sound between the outlets: speech from one room is 14.2 dB quieter in the neighbouring outlet and 17.5 dB on average. That is comparable to a sheet-metal box lined with 10 mm acoustic foam (12.5 dB), although our distributor has no foam. The ducts and terminal valves add further attenuation.
Can it be used for both supply and extract air?
Yes, the distributor is used in both the supply and the extract branch of heat recovery ventilation. The values shown apply to supply air.
Pressure loss, airflow split and crosstalk attenuation values come from computer simulation (physics-based calculation), not from measurement.
| Brand | Ventit |
| Silencer | Without silencer |
VentPlan data
VentPlan model
Component
- Model
- DB 8xDN90 (OD90–ID75 / Ø160)
- Number
- 712043
- Manufacturer
- Ventit
- Category
- dividers
3D preview
OBJ + MTLDistribution box for connecting 8× DN90 (OD90/ID75) to main port Ø160. Available: 2D diagram, 3D OBJ model, MTL materials.
| Component type | distribution box |
|---|---|
| Secondary connections | 8× DN90 |
| Outer / inner diameter | OD90 / ID75 |
| Main port | Ø160 |
| 3D model | OBJ + MTL |