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Silvent 931

SILVENT 931 is a small angled flat nozzle in stainless steel. The nozzle generates a wide thin air stream. Due to its small dimensions, the nozzle is very suitable for machine designs with limited space. The fact that the nozzle is blowing in 90° angle often makes installation easier. The SILVENT 931 is also commonly used in small, silent and efficient custom made air knifes. The Silvent technology makes it possible to combine efficient and silent blowing. SILVENT 931 fulfills the noise requirements of the EU Machine Directive as well as the OSHA safety regulations.
Noise reduction 69%
Air/cost savings 40%


SI units US units  
Blowing force3.4 N12.0 oz
Air consumption18 Nm³/h10.6 scfm
Sound level78 dB(A)
Blowing patternFlat
ConnectionG 1/8" NPT 1/8"
Connection typeMale
Dimensions24.0x18x11 mm0.94x0.71x0.64 inch
MaterialStainless steel
Weight0.1450 kg0.320 lbs
Max temp120 °C248 °F
Max operating pressure1.0 MPa143.0 psi


Replace open pipe4 mm5/32 inch
Noise reduction [dB(A)]17 dB(A)69 %
Air/cost savings [Nm³/h]12 Nm³/h40 %

Blowing properties at different pressures

SI units (kPa)2004006008001000
Blowing force (N)
Air consumption (Nm³/h)
Sound level (dB(A))69.476.179.881.482.2
US units (psi)406080100120
Blowing force (oz)7.910.813.716.619.4
Air consumption (scfm)7.79.711.613.615.5
Sound level (dB(A))72.876.479.080.881.6

Air cone patterns and velocity distribution

SI units (mm)50100200300400500
Blowing pattern (width)356090120180200
Blowing pattern (height)255080120180200
Velocity (m/s)12210057403633
US units (inch)248121620
Blowing pattern (width)1.382.363.544.727.097.87
Blowing pattern (height)0.981.973.154.727.097.87
Velocity (ft/s)400328187131118108

Blowing pattern

100 (4")
200 (8")
300 (12")
60 (2.36")
90 (3.54")
120 (4.7")