Jetflow 029-007667 HIT-250 (2018)

Centrifugal Inline Fan

  • Standard size 250mm
  • Air volume flow rates up to 0.232 m3/s
  • Static pressures up to 453 Pa
  • Suitable for operating temperatures up to +50℃
  • Available in AC


All metal inline centrifugal fans which are ideally suited to a wide range of commercial and industrial applications. They provide the ideal solution for high performance requirements in low airflow, medium pressure systems.

Features and Benefits

Easy Installation

All models are designed for direct connection to standard diameter flexible or rigid circular ducting with 25mm long spigots for ease of connection. The integral mounting bracket provides a fast, simple approach to fixing the fan in position.

Space Saving

A compact casing design, combined with high performance makes the product ideal for ceiling void mounting.

Efficient Performance

The single inlet, single width backward curved centrifugal impeller is designed to be non overloading and self cleaning ensuring efficiency.


Each HIT has a 12 month warranty.



HIT casings have a galvanised pressed sheet steel construction, providing a robust, long lasting and corrosion resistant casing. The inlet and outlet spigots area minimum of 25mm long to enable the installation and fixing to circular rigid, or flexible ductwork. All HIT units are to be supplied complete with integral mounting brackets manufactured from galvanised sheet steel for horizontal or vertical mounting arrangements.


All motors are to be highly efficient external rotor motors; matched to the aerodynamic performance of the impeller. Motors have sealed for life ball bearings to enable the fan to be mounted at any angle. Motors are protected to IP44 with Class F insulation; suitable for speed control and ambient operating temperatures up to +50 ℃ with built in thermal overload protection. Non self-resetting thermal cut-outs are fitted in accordance with EN60335-2-80. Motors are wound for 230V/1Ph/50Hz/60Hz supply. Electrical connections are made by an IP54 terminal box fitted to the outside of the fan casing.


All impellers are single inlet backward curved centrifugal type. Impellers are balanced to ISO 14694 Grade G6.3.ControlSpeed control shall be via stepped transformer or 3 speed switch dependant on model.

Quality Management

Units are to be designed and manufactured with procedures as defined in BS EN ISO 9001. All Jetflow HIT units are to be tested to ISO 5801 (airside performance) and BS848 Part 2 (sound performance).

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