TFC Monsta Pictures and Pressure Drop Testing

[AndreaBZ]

Here are the detailed results testing at .5GPM increments up to 4.5GPM and using an excel second order poly to produce the trendline.


And here is the comparison chart....
The TFC Monsta is KING OF LOW RADIATOR PRESSURE DROP!

Another question:
When you measure GPM Vs PSI,
do you set a particular attention to the position of the manometer?
I think that the position of the manometer both very important to concern very precise data.
Anymore the position of the manometer is correct,
anymore the curve that derives from the data passes near to the point 0-0.
****
The curve (straight line?) of the radiator HW GTX never finishes surprising me.
Why is it so unusual in comparison to the others?