Rotary Dust Valves

'Floating Seal' Type HDFSFB - Sizes 150, 200 and 250mm

The type HDFSFB ‘Floating Seal’ valve is a variation upon the standard type HDFBCI valve. The HDFSFB is of fabricated construction allowing the plants to vary a number of the operating design parameters to suit specific applications. 

The body is of heavy duty construction enabling the valve to operate at elevated temperatures and handle abrasive dusts. 

The bolted side panel allows the rotor and floating seal to be withdrawn from the side of the unit for maintenance purposes.

The Type HDFSFB ‘Floating Seal’ dust valve may be supplied as a bare shaft unit (i.e. no drive) or complete with electrically driven gearmotor as a direct drive or chain driven unit.

FEATURES

  • Cast iron rotor and seal of controlled hardness.
     

  • Fabricated heavy duty carbon steel body.
     

  • Rotor and floating seal withdrawable from side of valve.
     

  • Eight vane rotor to provide air lock seal.
     

  • Designed to handle abrasive materials at temperatures up to 400°C.
     

  • Suitable for positive or negative pressure up to 5 kPa.
     

  • Operates well with any type of dry material. Not suited for use with sticky material or material that will pack.
     

  • Valve cannot be overloaded; each pocket of the rotor is filled as it passes below the spout opening and the excess is scraped into the next pocket.
     

  • Dust-tight seals and collars seal the points where the shaft passes through the body.
     

  • Shaft moves in self-aligning, sealed-in ball bearing pillow blocks mounted on outrigger brackets secured to machined pads of valve housing.
     

  • Top of ‘floating seal’ firmly packed in upper housing with non-asbestos packing rings held in place by a retainer plate.
     

  • Simple construction and maintenance.
     

  • Replacement rotor and seal means that machining of housing is not required as occurs when components of other types of rotary valve wear.
     

  • Valve driven by a 0.55kW 415V, 3-phase, 50Hz, TEFC IP55 electric motor through a gearbox complete with couplings, sprockets, chains, guards etc, as required for the type of drive selected.
     

  • Gearbox fits standard motors.

 
OPTIONS

  • Nil-speed switch.
     

  • Electrical or mechanical variable speed drives where it is desired to use the valve as a ‘metering’ valve.
     

  • Client specified or higher power requirement motor / gearbox.
     

  • Crating for transport.
     

  • Shear pin in drive to protect drive train in case of jamming by foreign material or object where application is subject to this.
     

  • Stainless steel body.

 

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