#### firemanup

##### Well-Known Member

- Joined
- May 2, 2002

- Messages
- 1,282

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MW gives me a formula of:

Multi Port Diameter = 2 x SQRT ((Single Vent Area / # of holes) / 3.14)

What is SQRT, i’m assuming square root. Ok, square root of what? The volume? That would be 12.27.

What is “single vent area” the diameter of the correct single port size?

Volume is 150.72. SQRT of that is 12.27. Single port diameter is .5781”

2x12.27((.5781/3)/3.14)=1.5?? Im doing it wrong ...

What am i screwing up?