Bifurcated Case Axial fans - BIF

This product range is now obsolete and no longer available from Vent-Axia. The information here is provided for reference only.

At a Glance:

Specially developed to meet the need for an axial fan which can handle atmospheres normally detrimental to the life of a fan motor.
Has a split airway with a direct driven motor operationg in ambient air within the motor compartment.
The motors are of the B3 foot mounting type, totally enclosed and fan cooled.
The aluminium alloy impellers are die cast and have an adjustable pitch.

FAQ's Answered:

Sizes 250 to 800 Ø
Motors protected to IP55
Motor Insulation Class 'F'
Maximum ambient temp. 200°C
Speed controllable via transformer inverter (when the ambient air temperature is not higher than 60°C)
Suitable for relative 95% R.H.
Manufacture controlled to BS EN ISO 9001
Performance tested to BS 848 Parts 1 & 2 and ISO 5801

The Bifurcated Case Axial range of fans has been specifically developed to meet the need for an axial fan which can handle atmospheres normally detrimental to the life of the fan motor.

By isolating the motor from the system airstream, the bifurcated fan can handle a wide variety of saturated and dustladen atmospheres, heated air and hot gases.

The range has a split airway with adirect driven motor operating in ambient air within the motor compartment. They are suitable, as standard, for handling air temperatures up to +200°C.

Motor / Impellers

The motors are specially selected to operate within the motor compartment with the airstream in the duct system, at an elevated temperature.

Motors are of the B3 foot mounting type, totally enclosed and fan cooled. Being foot mounted the motors can, in the event of a failure, be readily interchanged with a comparable frame size from a wide range of manufacturers to cover temperatures of up to 200°C.

The motor is suitable for speed control by either an inverter or a 5-step auto transformer speed controller when the ambient air temperature is not higher than 60°C.

The aluminium alloy impellers are die cast and have an adjustable pitch which allows a wide range of air outputs to be selected. All the casings are manufactured in steel and hot dipped galvanised to BS EN ISO 1461 after fabrication. Motor mountings and fixings used in the assembly of the fan are zinc plated and passivated.

Terminal Box
To IP55, protected against dust and water jets from any angle, allowing outside applications.

Electrical

Single phase 220-240V 50 Hz supply are available in two sizes 250 and 315 diameter in either 2 or 4 pole versions. Three phase 380-440V 50Hz supply are available in six sizes 250, 315, 400, 500, 630 and 800 diameter in either 2 or 4 pole versions (630 and 800 dia are available as 4 pole).

DIMENSIONS:

Stock Ref. No. a b c d e f g h Approx Weight Kg
BIF250 /2&4/1&3/8-32 250 535 302 328 8 10 200 452 30
BIF315 /2&4/1&3/8-30 315 535 355 385 8 10 224 452 35
BIF400 /2&4/1&3/8-22 400 625 450 480 8 10 208 585 49
BIF500 / 4 / 3 /8-22 500 660 560 590 12 12 315 695 66
BIF500 / 2 / 3 /8-20 500 710 560 590 12 12 315 695 87
---
Stock Ref. No. A B C D E F G Approx Weight Kg
BIF630 / 4 / 3 /8-26 630 790 690 728 12 12 400 106
BIF800 / 4 / 3 /8-18 800 880 860 890 16 12 450 155

Overview

The Bifurcated Case Axial range of fans has been specifically developed to meet the need for an axial fan which can handle atmospheres normally detrimental to the life of the fan motor.

By isolating the motor from the system airstream, the bifurcated fan can handle a wide variety of saturated and dustladen atmospheres, heated air and hot gases.

The range has a split airway with adirect driven motor operating in ambient air within the motor compartment. They are suitable, as standard, for handling air temperatures up to +200°C.

Motor / Impellers

The motors are specially selected to operate within the motor compartment with the airstream in the duct system, at an elevated temperature.

Motors are of the B3 foot mounting type, totally enclosed and fan cooled. Being foot mounted the motors can, in the event of a failure, be readily interchanged with a comparable frame size from a wide range of manufacturers to cover temperatures of up to 200°C.

The motor is suitable for speed control by either an inverter or a 5-step auto transformer speed controller when the ambient air temperature is not higher than 60°C.

The aluminium alloy impellers are die cast and have an adjustable pitch which allows a wide range of air outputs to be selected. All the casings are manufactured in steel and hot dipped galvanised to BS EN ISO 1461 after fabrication. Motor mountings and fixings used in the assembly of the fan are zinc plated and passivated.

Terminal Box
To IP55, protected against dust and water jets from any angle, allowing outside applications.

Electrical

Single phase 220-240V 50 Hz supply are available in two sizes 250 and 315 diameter in either 2 or 4 pole versions. Three phase 380-440V 50Hz supply are available in six sizes 250, 315, 400, 500, 630 and 800 diameter in either 2 or 4 pole versions (630 and 800 dia are available as 4 pole).

Technical

DIMENSIONS:

Stock Ref. No. a b c d e f g h Approx Weight Kg
BIF250 /2&4/1&3/8-32 250 535 302 328 8 10 200 452 30
BIF315 /2&4/1&3/8-30 315 535 355 385 8 10 224 452 35
BIF400 /2&4/1&3/8-22 400 625 450 480 8 10 208 585 49
BIF500 / 4 / 3 /8-22 500 660 560 590 12 12 315 695 66
BIF500 / 2 / 3 /8-20 500 710 560 590 12 12 315 695 87
---
Stock Ref. No. A B C D E F G Approx Weight Kg
BIF630 / 4 / 3 /8-26 630 790 690 728 12 12 400 106
BIF800 / 4 / 3 /8-18 800 880 860 890 16 12 450 155

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