Mixed Flow Inline Fan | DPT Noise and Pressure by Model

MODEL SELECTION

Start with the published model data

Compare the published airflow, static pressure and duct-size rows below. Final selection should match the installed duct route, voltage and quantity.

MODEL PERFORMANCE

DPT model performance

Published values for the selectable DPT models at 220 V / 50 Hz. High and Low rows identify the available operating gear where applicable.

High / Low rows show the published operating gears. DPT-250P and DPT-315P are published as single-gear models.

DPT model comparison at 220 V / 50 Hz
Model	Operating gear	Power (W)	Airflow (m³/h)	Static pressure (Pa)	Speed (rpm)	Noise (dB)	Net weight (kg)	Duct size (mm)
DPT-100P	High	40	204	132	2400	31	1.55	φ100
DPT-100P	Low	30	160	106	1950	26	1.55	φ100
DPT-150P	High	60	450	280	2590	33	2.5	φ150
DPT-150P	Low	48	360	240	1950	29	2.5	φ150
DPT-200P	High	145	840	350	2490	63	3.1	φ200
DPT-200P	Low	125	690	270	1980	55	3.1	φ200
DPT-250P	Single	230	1400	489	2450	66	7.5	φ250
DPT-315P	Single	360	2200	690	2350	69	10.4	φ315

Use the airflow-static pressure curve together with the installed duct route to verify the operating point before quotation.

Dimensions (mm)

DPT dimensions by model

DPT dimensions by model
Model	L	W	H	E
DPT-100P	257	180	215	φ99
DPT-150P	302	210	245	φ148
DPT-200P	302	230	270	φ198
DPT-250P	390	280	310	φ248
DPT-315P	450	320	413	φ313

DPT series airflow and static pressure reference curve — DPT series airflow-static pressure reference curve. The chart also includes DPT-125P, which is not a selectable variant on this product page.

What a mixed flow fan is, and when it is the right choice

A mixed flow impeller combines two airflow principles in one wheel. It moves air axially along the duct, as an axial fan does, while the shaped blades also accelerate the air outward as a centrifugal fan would. The result sits between the two types: more static pressure than a plain axial fan, in a shorter and more compact body than a centrifugal unit.

That combination is why the mixed flow duct fan format is common in ducted ventilation. Where an axial fan would lose performance against a longer duct run or a filter, and a centrifugal fan would need more room to install, an inline mixed flow fan can be fitted directly into the duct while still developing the pressure the run requires.

How to tell whether a mixed flow fan is the right fit

Duct length and bends. Short, open runs suit an axial fan. Once the run is long or has several bends, the pressure demand rises and a mixed flow or centrifugal fan becomes the better fit.
Available space. A mixed flow inline fan sits in the duct line, so it needs no separate plant space or bulky housing. A centrifugal fan may move more air at high pressure, but it needs the room to do it.
Noise sensitivity. Because the impeller does more of the work internally, the sound profile differs from an axial fan. Where the duct passes occupied space, compare the published noise figure for the specific model rather than a family average.
Airflow target. Read the published airflow and static pressure together. A model rated at a high free-air airflow can still underperform if the duct resistance is higher than its pressure figure allows.

Mixed flow inline fan, mixed flow duct fan or inline mixed-flow duct fan?

These names describe the same product family, and buyers use them interchangeably. A mixed flow inline fan, a mixed flow duct fan, an inline mixed-flow fan and an inline mixed-flow duct fan all refer to a fan whose impeller combines axial and centrifugal airflow and which mounts within the duct line. If a specification or a supplier uses one of these terms, confirm the duct diameter, the airflow and the static pressure — those three values decide whether the unit works in the installation, not the wording of the name.

If the format is still open, the comparison guide Inline Duct Fan vs Mixed-Flow Fan sets out where each type fits. Where sound is the deciding factor, review the silent mixed flow inline duct fan series instead.

Where this inline duct fan fits

View application fit and project inputs

Mixed Flow Inline Fan is suited for low-noise, high-pressure duct ventilation on supply or exhaust routes where the buyer needs compact inline installation and a defined duct path.

For long duct runs, multiple bends, filter resistance or strict noise targets, confirm static pressure instead of selecting by nominal airflow only.

Core Engineering Features

DPT model performance set against the published values on this page. Every point below is taken from this model’s own data.

Operating gearHigh

Power (W)40

Airflow (m³/h)204

Static pressure (Pa)132

Speed (rpm)2400

Noise (dB)31

Quality Assurance & Warranty

Fan orders are checked at the factory before shipping, because published airflow and pressure only hold if the delivered unit matches its table row.

Applied to this model: Operating gear High, Power (W) 40. These checks are run against that specification before the unit ships.

Airflow and pressure checkChecks cover motor start-up, impeller balance, airflow and static pressure verification, noise review and model-to-table parameter matching.

Documented complianceCE, RoHS and related files cover the listed fan families; see the documents section below.

Warranty supportWarranty for fan orders is confirmed with the quotation for your destination market.

Service parts for fansImpellers, motor capacitors, mounting brackets and common service items.

OEM/ODM & Supply Options

For distributors and contractors working on ventilation projects, the supply side adapts to your market instead of one fixed fan build.

For this model (Operating gear High, Power (W) 40), the OEM route can start from that base specification rather than a blank sheet.

OEM/ODMBadging, packaging and control options for fan orders, including branded cartons and manual inserts.

Airflow and pressure variantsModel selection, motor power and voltage options are reviewed against your duct calculation.

Voltage & plug optionsVoltage and plug configuration for this product line can be reviewed during quotation.

Documentation & bulk supplyCatalogues, technical sheets, available certificates, volume pricing and distributor programs for this product line.

Order quantity & lead timeMinimum order quantity, sampling and production lead time are confirmed per model and order volume — see the B2B supply page for how sourcing enquiries are handled.

Documents & Compliance

Download the KC mixed flow inline fan datasheet used for the technical values on this page, and review the relevant compliance documents.

Download KC mixed flow inline fan datasheet (PDF)

Confirm the exact model, destination-market requirements and current documentation before quotation or project documentation.

View all certifications and compliance documents by product scope

Frequently asked questions

Read the selection FAQ

Can I choose by duct diameter only?

No. Duct diameter is only the starting point. Confirm airflow, static pressure, duct length and bends.

Why confirm static pressure?

Long ducts, filters and bends reduce actual airflow. Static pressure helps avoid under-selection.

What information is needed for quote?

Send duct diameter, route, airflow target, duct length, bends, outlet type, voltage/frequency, quantity and destination.

QUOTE ROUTE

Request a review for your selected DPT model

Send the selected model, duct conditions and quantity for technical review.

Final quote review requires confirmation of the model, operating mode and installation requirements.

Mixed Flow Inline Fan | Compare DPT Noise and Pressure

Start with the published model data