Water Valve Calculator
Brought to you by ControlPix, your source for high quality, 3D, animated HVAC graphics.

for use with Tridium Niagara, Vykon, Staefa Talon, Distech EC-Net, Johnson Controls Facility Explorer FX FX-40,
Honeywell WEBsAX, Invensys Niagara Framework systems and many others.

Caveat Emptor: These pages are under construction, and not finished. Specifically, input error checking is not done. While I believe the calculations to be accurate, use good engineering practices and check, check, check.

Calculate Flow, Pressure Drop, and Cv

Click on the button you want to calculate, after filling in the other two parameters.

Flow (GPM)

Pressure Drop (PSI)


Calculate Capacity,
Temperature Differential, and Flow

Enter any two values, click on the appropriate button to calculate the third.

Capacity (BTUH)

Water Temperature Differential (°F)

Flow (GPM)

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©2001 William C. Gausman