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  • Bete Nozzles

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FF Extra-Wide Angle Nozzles

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FF Extra-Wide Angle Nozzles

FF nozzles: deflected flat fan fire protection nozzles and (extra) wide angle nozzles

Design features

  • One-piece construction
  • Clog-resistant
  • Durable
  • 3/8″ FFs in Brass are available with UL approval
  • Male connection
  • For FM-approved flat fan nozzles, see the AFF series

Spray characteristics

  • Extra-wide 145° spray angle
  • Medium-impact spray
  • Spray discharge deflected 75° from inlet axis
  • Coarse atomization
Common Materials:
303, 316, Brass, PVC, PTFE

Design characteristics

All nozzles are hydraulically driven and have one of two main design characteristics that generate the flat fan pattern.

  • Nozzles like the NF & BJ series manipulate the orifice by having a slit into the nozzle that guides the flow into a specific spray pattern. The spray angle of these slitted nozzles is determined both by the angle of the cut and the depth of the cut. The deeper and more narrow the cut, the wider the spray angle.
  • Other fan nozzles like the FF and SPN series use a deflection face to guide and form the fan pattern. The orifice passes the fluid, and a sloping face directs and generates the pattern. A longer and more narrow deflection face will produce a more narrow spray angle where a wider and short face will produce a wider pattern.
  • Flat fan nozzles are often times the most advantageous choice for conveyor belt applications. Whenever something is moving and has to be washed, wetted or coated, fan nozzles are often your best choice. Examples of this are conveyor belt cleaning, suppressing coal dust on a conveyor and coating molds with lubrication.
  • When a high impact force is necessary for either cleaning or other applications, a fan style nozzle may give you the most optimal results. The SPN series and narrow-angled NF nozzles will provide a large impact force while generating relatively low flow rates.

Spray angles

Most flat fan nozzles are able to achieve a wide variety of spray angles. BETE’s flat fan nozzles usually produce a spray angle from 120° to 0° with a multitude of options in between. Some special extra-wide flat fan nozzles like the FF series can produce angles as wide as 145°.

BETE_FF Nozzles Deflected Flat Fan Fire Protection Nozzles and Wide Angle Nozzles