Each nozzle complying with the requirements of this standard
should be permanently marked as follows:
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.1 trademark or manufacturer's name;
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.2 model identification;
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.3 manufacturer's factory identification. This
is only required if the manufacturer has more than one nozzle manufacturing
facility;
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.4 nominal year of manufacturefootnote (automatic nozzles only);
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.5 nominal release temperaturefootnote (automatic nozzles only); and
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.6 K-factor. This is only required if a given
model nozzle is available with more than 1 orifice size.
In countries where colour-coding of yoke arms of glass bulb
nozzles is required, the color code for fusible element nozzles should
be used.