Air Knives | Raptor Supplies Singapore

Air Knives

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Air knives are ideal for delivering high-pressure laminar flow of air by producing high compression ratio. They can be used to blow away debris, dust and other contaminants from surfaces, such as in machinery and conveyor systems.

EXAIR -

Compact Air Knives, dBA, 1/4 Inch Inlet

Exair standard air knives are suitable for cooling, part drying or cooling off parts or items, as they move along the conveyor system. These air knives utilize the coanda effect to create air movement in their surroundings and deliver a uniform sheet of laminar airflow across the entire length with hard hitting force. They are engineered to significantly reduce compressed air usage and reduce the noise level up to 10 dBA, as compared to other "homemade" blowoff devices. These units are constructed of aluminium / stainless steel material for maximum corrosion resistance and are easy to install. Variants are available in air consumption rates ranging from 8.7 to 156 SCFM.

StyleModelAir ConsumptionMaterialMax. Temp.Number Of InletsOverall DepthOverall ThicknessOverall WidthPrice (inc. GST)
A1100038.7 scfmAluminum180 F41.75"1.44"3" SGD 441.59
B110003SS8.7 scfmStainless Steel800 F41.44"1.03"3" SGD 723.08
A11000617.4 scfmAluminum180 F41.75"1.44"6" SGD 508.93
B110006SS17.4 scfmStainless Steel800 F41.44"1.03"6" SGD 894.39
A11000926.1 scfmAluminum180 F41.75"1.44"9" SGD 635.10
B110009SS26.1 scfmStainless Steel800 F41.44"1.03"9" SGD 1218.58
A11001234.8 scfmAluminum180 F41.75"1.44"12" SGD 663.54
B110012SS34.8 scfmStainless Steel800 F41.44"1.03"12" SGD 1296.18
A11001852.2 scfmAluminum180 F41.75"1.44"18" SGD 852.37
B110018SS52.2 scfmStainless Steel800 F41.44"1.03"18" SGD 1595.78
A11002469.6 scfmAluminum180 F41.75"1.44"24" SGD 1003.09
B110024SS69.6 scfmStainless Steel800 F41.44"1.03"24" SGD 2031.90
A11003087.0 scfmAluminum180 F41.75"1.44"30" SGD 1249.57
B110030SS87.0 scfmStainless Steel800 F41.44"1.03"30" SGD 2390.85
A110036104.4 scfmAluminum180 F41.75"1.44"36" SGD 1530.59
B110036SS104.4 scfmStainless Steel800 F41.44"1.03"36" SGD 2831.91
A110042121.8 scfmAluminum180 F41.75"1.44"42" SGD 1830.91
B110042SS121.8 scfmStainless Steel800 F41.44"1.03"42" SGD 3416.92
A110048139.2 scfmAluminum180 F51.75"1.44"48" SGD 2100.18
B110048SS139.2 scfmStainless Steel800 F51.44"1.03"48" SGD 4056.06
B110054SS156 scfmStainless Steel800 F51.44"1.03"54" SGD 4521.30
EXAIR -

High Efficiency Air Knife Kits, 1/4 Inch FNPT Inlet

Exair air knife kits are used to enhance the working mechanism of air knives for cleaning, drying, cooling or blowoff applications. These kits include a super air knife, shim set, filter separator and a pressure regulator. The super air knives are used for delivering a quiet, hard hitting curtain of air across the entire length for maximum efficiency. Shim set allows increase / decrease in the force & volume of both consumed air & output airflow. Filter separators are ideal for separating water, dirt and scale from compressed air & keeping output clean while pressure regulators (w/ coupler) adjust the pressure required at the point of use and relieve undue pressures on fittings, hoses and tools. All models are CE compliant and are available in overall widths ranging between 3 and 54 inches.

StyleModelAir ConsumptionMaterialMax. Temp.Number Of InletsOverall DepthOverall ThicknessOverall WidthPrice (inc. GST)
A1102038.7 scfmAluminum180 F41.75"1.44"3" SGD 900.85
B110203SS8.7 scfmStainless Steel800 F41.44"1.03"3" SGD 1227.20
A11020617.4 scfmAluminum180 F41.75"1.44"6" SGD 962.87
B110206SS17.4 scfmStainless Steel800 F41.44"1.03"6" SGD 1402.19
A11020926.1 scfmAluminum180 F41.75"1.44"9" SGD 1084.68
B110209SS26.1 scfmStainless Steel800 F41.44"1.03"9" SGD 1719.95
A11021234.8 scfmAluminum180 F41.75"1.44"12" SGD 1129.86
B110212SS34.8 scfmStainless Steel800 F41.44"1.03"12" SGD 1806.15
A11021852.2 scfmAluminum180 F41.75"1.44"18" SGD 1391.15
B110218SS52.2 scfmStainless Steel800 F41.44"1.03"18" SGD 2284.85
B110224SS69.6 scfmStainless Steel800 F41.44"1.03"24" SGD 2629.78
A11022469.6 scfmAluminum180 F41.75"1.44"24" SGD 1581.46
A11023087.0 scfmAluminum180 F41.75"1.44"30" SGD 1908.88
B110230SS87.0 scfmStainless Steel800 F41.44"1.03"30" SGD 3172.10
A110236104.4 scfmAluminum180 F41.75"1.44"36" SGD 2183.95
B110236SS104.4 scfmStainless Steel800 F41.44"1.03"36" SGD 3641.96
A110242121.8 scfmAluminum180 F41.75"1.44"42" SGD 2484.22
B110242SS121.8 scfmStainless Steel800 F41.44"1.03"42" SGD 4008.30
A110248139.2 scfmAluminum180 F51.75"1.44"48" SGD 2852.32
B110248SS139.2 scfmStainless Steel800 F51.44"1.03"48" SGD 4601.90
A110254156 scfmAluminum180 F51.75"1.44"54" SGD 3110.77
RFQ
B110254SS156 scfmStainless Steel800 F51.44"1.03"54" SGD 5541.88
RFQ
EXAIR -

Air Wipes

StyleModelAir ConsumptionInside Dia.Max. DbaOutside Dia.TypePrice (inc. GST)
A240013.9 scfm0.500"64 at 80 PSI3-1/4"General Purpose SGD 649.04
A240119.1 scfm1"64 at 80 PSI3.75"General Purpose SGD 766.76
A240229.5 scfm2"64 at 80 PSI4.75"General Purpose SGD 1011.52
A240339.8 scfm3"79 at 80 PSI5.75"High Efficiency, General Purpose SGD 1640.94
A240450.2 scfm4"81 at 80 PSI6.75"High Efficiency, General Purpose SGD 2270.54
EXAIR -

Air Wipe Kits

StyleModelAir ConsumptionInside Dia.Max. DbaOutside Dia.TypePrice (inc. GST)
A245013.9 scfm0.500"64 at 80 PSI3-1/4"General Purpose SGD 1109.79
A245119.1 scfm1"64 at 80 PSI3.75"General Purpose SGD 1213.85
A245229.5 scfm2"64 at 80 PSI4.75"General Purpose SGD 1441.16
A245339.8 scfm3"79 at 80 PSI5.75"High Efficiency, General Purpose SGD 1778.89
A245450.2 scfm4"81 at 80 PSI6.75"High Efficiency, General Purpose SGD 3181.49
EXAIR -

Air Knives

StyleModelPrice (inc. GST)
A112018 SGD 1678.57
A112030 SGD 2279.38
A112036 SGD 2654.05
A112048 SGD 3489.93
A112006 SGD 1154.44
A112012 SGD 1419.50
B110084 SGD 4326.12
EXAIR -

Air Knife 1/4 Inch Npt 54 Inch Length Aluminium

ModelItemPrice (inc. GST)
10054AE9GCQ SGD 2454.38

Air Knives

Choose from a wide range of air knives, air wipes, static eliminating air knives and kits by Exair and Approved Vendors. Air knives are designed to produce a high-pressure laminar flow of air by producing an excellent compression ratio. They are ideal for use in cooling systems, blowing off liquid & debris from products and conveyor line applications. Exair's super air knives deliver a uniform streamline flow with 40:1 compression ratio & air inlet ranging from 8.7 to 156 SCFM, thereby producing a hard hitting blow. They feature aluminium or stainless steel bodies to handle the high compression ratios and 4 to 5 inlet ports for air intake. Depending upon at the material, they can handle airflow temperatures up to 800 deg F. Air wipes by Exair are an annular form of air knives and are designed to serve as an efficient blow-off system. These air wipes feature aluminium bodies with 1/4 inch NPT inlet ports and ring diameters ranging from 0.5 to 4 inches. These air wipes and knives are further offered in kits.

Working Mechanism

  • Air knife's plenum chamber is filled with compressed air that flows through an inlet and is directed toward a slotted orifice.
  • A flat surface directs the primary airflow in a perfectly straight line as it exits the thin slotted nozzle and creates a uniform air sheet around the knife's entire length.
  • By entraining the room air into the primary airstream at a 40:1 compression ratio, velocity loss is minimised & force is maximised, resulting in a perfect laminar airflow sheet with hard-hitting force and reduced wind shear.

Frequently Asked Questions

How do I control the air pressure and flow rate of an air knife?

  • Air pressure and flow rate can be controlled using various methods, depending on the specific air knife and its application.
  • Some common methods include using a regulator, compressor and a filter for controlling the air pressure and using a restriction orifice or a valve to control the air flow.

How much pressure should be used on these air knives?

250 PSIG.

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