Back Pressure Minimum Cv Calculator for Gases

1. Enter your values in the boxes. Use the Tab key to move to the next box.

Flow Rate (SCFM)

Set Back Pressure (PSIA)

Downstream Vent Pressure (PSIA)

Specific Gravity
(relative to air at 60°F)

Temperature (°F)

2. Click the Calculate button


Minimum allowable Cv
(Select a regulator with a Cv at least twice this value)


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