STjh 250 mm EC mixed-flow inline fan with a large deep polypropylene body and broad duct spigots on white.

STJH-MIXED-FLOW-INLINE-FAN-250MM

Mixed-Flow Inline Fan 250 mm EC

The largest selected mixed-flow inline fan, with a 249 mm connection and a 300 mm-long, 303 mm-diameter casing.

250 mm high-flow branch size
300 mm casing length
Largest selected EC motor package

Introduction de produit

The 250 mm version is built for higher-flow supply and exhaust branches and has the largest selected impeller and motor package. A 249 mm duct spigot and 303 mm outer casing clearly distinguish it from the two smaller fans, while the 300 mm body remains compact for its airflow class.

Key Features

Higher branch throughput

The expanded impeller serves major support-room or equipment exhaust branches without moving to a rectangular fan.

Round-duct integration

The 249 mm spigots connect directly to nominal 250 mm circular duct and common inline accessories.

Controllable motor package

The larger EC drive can be balanced to actual pressure demand rather than throttled continuously at full speed.

Paramètres techniques

Nominal Duct Diameter	250 mm
Spigot Diameter	249 mm
Body Length	300 mm
Overall Diameter	303 mm
Motor Technology	EC 50/60 Hz
Impeller	Large mixed-flow type
Casing	Circular inline enclosure
Control	Compatible variable-speed input
Duty	Higher-flow supply or exhaust
Customisation	Electrical control, isolation, sound attenuation and duct fittings can be selected for the intended application and operating environment.

Applications

Higher-flow cleanroom support supply, central local-extract branches, technical-area exhaust and process-equipment ventilation.

Solutions for Your Application

A medium inline fan requires excessive speed and becomes noisy at the target volume.Use the larger 250 mm impeller and commission it at the lowest speed that satisfies measured airflow.

The heavier fan body could distort lightweight circular duct.Provide an independent bracket or suspension support and use flexible couplings instead of loading the duct joints.

Options disponibles

Variable-speed controller, suspension kit, insulated silencer, quick-release clamps, backdraft damper and inlet grille are available.

Planning a Mixed-Flow Inline Fan 250 mm EC specification?

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