Standard Airflow Nozzles: We are the largest producer of air calibration nozzles in the world. Offered with or without taps, our nozzles are also available with caps. Helander nozzles meet most critical dimensions in respect to the AMCA/ANSI standard.

Standard sizes range from 0.375″ to 24″ in bore diameter. As a custom metal forming and fabricating company,  we welcome custom size orders. See table at bottom of page for sizes offered.

Clearance Hole: The approximate hole size that would be cut in the chamber in order to bolt in the flange of nozzle.

Nozzle Cap: An aluminum cap that fits over the bore of the nozzle for protection; this cap is not an airtight plug.

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Air Flow Nozzles Air Flow Nozzles Air Flow Nozzles

Specifications for Air Flow Nozzles

Capabilities Applied/Processes

Spinning, Machining, Welding

Tightest Tolerance

(+/-.001)

Material Thickness

From 0.050" Up to 0.250" thick

Material Used

Aluminum

Material Finish

#4 brush finish

Industry for Use

Air Flow Calibration

Typical Volume

1 to 100pcs

Standard Delivery Time

2 to 12 weeks

Delivery Location

International

Standards

AMCA/ANSI

Air Flow Nozzle Sizes

Bore Diameter Approximate Flange Diameter Approximate Clearance Hole Blank Material Thickness
.375 2.187 1.000 .063 ALUM
.500 3.000 1.167 .063 ALUM
.687 3.500 1.603 .090 ALUM
.750 2.875 1.751 .090 ALUM
1.000 3.750 2.334 .125 ALUM
1.250 5.500 2.918 .125 ALUM
1.500 5.500 3.501 .125 ALUM
1.600 5.250 3.734 .125 ALUM
2.000 7.500 4.668 .125 ALUM
2.500 9.000 5.500 .125 ALUM
3.000 9.875 7.002 .125 ALUM
4.000 12.000 9.336 .125 ALUM
4.500 13.500 10.000 .125 ALUM
5.000 14.000 11.670 .125 ALUM
5.500 14.937 12.837 .125 ALUM
6.000 16.000 14.004 .125 ALUM
7.000 19.334 16.338 .125 ALUM
8.000 20.150 18.672 .125 ALUM
9.000 24.000 19.500 .125 ALUM
10.000 26.000 23.340 .187 ALUM
11.000 30.000 25.674 .187 ALUM
12.000 32.000 28.000 .187 ALUM
14.000 35.500 32.676 .187 ALUM
16.000 41.344 37.344 .187 ALUM
20.000 50.680 46.680 .187 ALUM
24.000 56.000 49.000 .187 ALUM

Note: Standard nozzle flanges do not come with a bolt hole pattern. Blank material thickness will thin in the spinning process and the final part wall thickness will vary.