Can I reduce a Ventair system from 4 to 2 to add a 3 way valve.

Discussion in 'Do It Yourself' started by acrylicman, Nov 25, 2015.

  1. I am building a self contained semi automatic growing system. I am using a Ventair 4" fan with variable speed control, and a carbon odor canister. I want to be able to redirect the flow through the canister or not relatively inexpensively. I found inexpensive 3 way valve for pools that is 2". I bought 2 reducers (4" to 2") I plan on connecting the 3 way valve and reducers in line between the Ventair fan and odor canister. This way with a turn of the handle the fan air will go through the odor canister or bypass it. I want to be able to ventilate the air at times without wearing out my odor canister when not necessary.


    My ultimate question is, will this reduction in size from 4" to 2" cause a problem with the fan, and maybe wear out its life, or can I avoid the problem, by not running it a full speed.


    I would appreciate any information to let me know if this will work without ruining the fan, and/or maybe some alternatives.


    Thank you ahead of time for everyone's help.
     

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