Technical data
PISCO indicates the orifice diameter or effective cross-sectional area depending on the model.
These are generally guidelines for how much air can be flowed in an air device, and the larger the value, the greater the amount of air that can be flowed.
1. Orifice diameter (unit: φmm)
It is the narrowest aperture in the passage and is relatively short (hole size) with respect to the cross-sectional dimensions.
The "orifice diameter" is a representation of this in diameter.
This size determines the flow rate. Also, when the orifice is long, it is called a choke.
2. Effective cross-sectional area (unit: mm2)
Air passes through the orifice and shrinks from the actual cross-sectional area of the orifice.
The cross-sectional area of this reduced part is the effective cross-sectional area.
It is the cross-sectional area calculated based on the actual flow rate and is used as the capacity display value of the valve.
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