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Silvent 921

SILVENT 921: flat nozzle that generates a broad and efficient blowing pattern. Outstanding for use wherever a wide but thin striking surface is required. Flat nozzles are suitable for most areas of application, such as: drying, transporting, cooling, cleaning etc. Often used in manifold systems, providing silent and highly efficient air knives. Made of zinc with 1/8" male connection thread. The exhaust ports are protected from external forces by fins. Fully complies with EU Machine Directive noise limitations and OSHA safety regulations.
Noise reduction 65%
Air/cost savings 43%


SI units US units  
Blowing force3.0 N10.6 oz
Air consumption17 Nm³/h10.0 scfm
Sound level80 dB(A)
Blowing patternFlat
ConnectionG 1/8" 1/8"-27 NPT
Connection typeMale
Dimensions23.9x11x55 mm0.94x0.43x2.17 inch
Weight0.038 kg0.084 lbs
Max temp70 °C158 °F
Max operating pressure1.0 MPa143.0 psi


Replace open pipe4 mm5/32 inch
Noise reduction [dB(A)]15 dB(A)65 %
Air/cost savings [Nm³/h]13 Nm³/h43 %
Meet the EU Machine directivesYes

Blowing properties at different pressures

SI units (kPa)2004006008001000
Blowing force (N)
Air consumption (Nm³/h)7.913.519.825.831.8
Sound level (dB(A))69.276.480.883.585.7
US units (psi)406080100120
Blowing force (oz)5.98.911.814.817.8
Air consumption (scfm)6.08.510.913.415.9
Sound level (dB(A))72.776.979.882.184.1

Air cone patterns and velocity distribution

SI units (mm)50100200300400500
Blowing pattern (width)6382120160200240
Blowing pattern (height)305090130170210
Velocity (m/s)12210057403633
US units (inch)248121620
Blowing pattern (width)2.483.234.726.307.879.45
Blowing pattern (height)1.181.973.545.126.698.27
Velocity (ft/s)400328187131118108

Blowing pattern

100 (4")
200 (8")
300 (12")
82 (3.23")
120 (4.72")
160 (6.3")